Patent application number | Description | Published |
20090080397 | METHOD OF ALLOCATING RESOURCE REGION TO REDUCE MAP OVERHEAD - A method of allocating a radio resource in a wireless access system is disclosed. The method includes receiving a control message associated with radio resource allocation for transmitting uplink data to the base station, wherein the control message comprises a first persistent uplink allocation information element comprising first resource allocation information associated with a first resource allocation region for transmitting the uplink data of a mobile station and transmitting an acknowledgment (ACK) message from the mobile station to the base station in response to successfully receiving the first persistent uplink allocation information element. | 03-26-2009 |
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 |
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 |
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 |
20100215012 | METHOD OF CONVERTING ALLOCATED RADIO RESOURCE MODE OF MS IN WIRELESS ACCESS SYSTEM - A method of switching a radio resource mode allocated to a mobile station in a wireless access system is disclosed. The method for switching the radio-resource mode allocated to the mobile station in the wireless access system includes, transmitting information of a second radio-resource mode to a base station, thereby requesting a switching from a first radio-resource mode allocated to the mobile station to the second radio-resource mode, and re-requesting the switching of the radio-resource mode using a high-speed feedback channel, if a message approving the switching of the radio-resource mode is not received within a predetermined time. So, a variety of problems caused by inconsistency in operation mode between a mobile station receiving no control messages and the base station can be solved. | 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 |
20100246511 | METHOD OF ALLOCATING RESOURCE AREA IN WIRELESS ACCESS SYSTEM - A method of allocating a radio resource in a wireless access system is disclosed. The method includes receiving a control message associated with radio resource allocation for transmitting uplink data to the base station, wherein the control message comprises a first persistent uplink allocation information element comprising first resource allocation information associated with a first resource allocation region for transmitting the uplink data of a mobile station and transmitting an acknowledgment (ACK) message from the mobile station to the base station in response to successfully receiving the first persistent uplink allocation information element. | 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 |
20100254332 | METHOD OF ALLOCATING RESOURCE FOR MOBILE STATION TO SUPPORT REAL TIME SERVICE - A method of efficiently allocating a resource to a mobile station to support a real time service in a radio access system is provided. The method includes grouping one or more mobile stations and allocating a group resource area for transmitting bandwidth request information for transmitting real time service data of the grouped one or more mobile stations, and allocating respective individual resource areas of the one or more mobile stations included in the group resource area. Since the method of grouping the mobile service and efficiently allocating an uplink resource are provided, it is possible to reduce message overhead and efficiently use the resource. | 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 |
20100290411 | METHOD OF ALLOCATING RADIO RESOURCE IN BROADBAND WIRELESS ACCESS SYSTEM - A method for allocating resource regions in a wireless access system is provided. This method collectively allocates resources in non-consecutive frames. Specifically, a message, including allocation information used to collectively and non-consecutively allocate identical resource regions, is received from a base station and data is transmitted or received through the allocated resource regions. Since identical resource regions are collectively allocated in multiple frames, it is possible to reduce both the number of transmissions of a MAP message and MAP overhead in a network. | 11-18-2010 |
20110014877 | METHOD FOR TRANSMITTING AND UPDATING SYSTEM INFORMATION IN A LEGACY SUPPORT SYSTEM - A method for transmitting and updating system information in a system that supports a legacy mobile station is disclosed. A method for transmitting system information according to one embodiment of the present invention comprises transmitting a super-map through a new zone of a super-frame, the super-map including channel description transmission control information indicating a channel descriptor of a legacy zone; and transmitting the channel descriptor and a map message through the legacy zone, the map message indicating the channel descriptor. | 01-20-2011 |
20110014916 | METHOD FOR HANDOVER WITH CONSIDERATION OF THE NEIGHBOR BASE STATIONS' CIRCUMSTANCES - A method for a handover with consideration of neighbor base stations' circumstances is disclosed. The method for a handover with consideration of neighbor base stations' circumstances by a mobile station in a wireless communication system includes transmitting a handover request (MOB_MSHO-REQ) message to a serving base station, receiving a handover response (MOB_BSHO-RSP) message including a base stations list made with consideration of the neighbor base station's circumstances from the serving base station, and selecting a base station among neighbor base stations except some base stations of the base stations list and transmitting a handover indicate (MOB_HO_IND) message including a information of the selected base station to the serving base station. | 01-20-2011 |
20110103342 | METHOD FOR REQUESTING BANDWIDTH BY MESSAGE HAVING VARIABLE FORMAT - A method for requesting a bandwidth by a message having a variable format is disclosed. The method includes determining a bandwidth request type according to a size of an uplink bandwidth requested by a mobile station, generating a bandwidth request message having a header format according to the determined bandwidth request type, and transmitting the bandwidth request message to a base station. The determined bandwidth request type is one of a bandwidth request per connection, a bandwidth request per Quality of Service (QoS), and a bandwidth request per mobile station. | 05-05-2011 |
20110134873 | METHOD FOR REQUESTING UPLINK RESOURCES AND TRANSMITTING UPLINK DATA - A method for requesting uplink resources and transmitting data is provided. The method includes being allocated to a BR code from a BS by an MS, and transmitting a BR indicator in a format without an ID of the MS to the BS using the BR code in non-contention mode by the MS. Because contention-based MSs and non-contention-based MSs transmit different uplink allocation request information, unnecessary information transmission is avoided, which is efficient. Also, information specific to each MS can be transmitted in extra resources. | 06-09-2011 |
20110141997 | METHOD FOR FEEDBACK TO UPLINK ALLOCATION REQUEST - A method for a feedback to an uplink allocation request is disclosed. The method for a feedback to an uplink allocation request comprises receiving a bandwidth request (BR) of the mobile station in a base station; detecting codes from the bandwidth request; and transmitting a BR result report to a mobile station, the BR result report indicating detection failure when detecting the codes or code repetition. According to the embodiment of the present invention, it is advantageous in that a wait time of a timer can be reduced as the base station directly reports the result of the transmission of the bandwidth request can be performed promptly. | 06-16-2011 |
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 |
20110286419 | METHOD FOR TRANSMITTING SERVICE FLOW INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method for transmitting service flow information in a wireless communication system. The method for transmitting service flow information in a wireless communication system according to one aspect of the present invention comprises the step of enabling a terminal to transmit, to a base station and through the service flow to be generated or modified during a service flow generating or modifying process, an indicator for indicating whether or not uplink data to be transmitted exists. | 11-24-2011 |
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 |
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 |
20120063423 | METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING RESOURCE ALLOCATION INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method and apparatus for transmitting/receiving resource allocation information in a random access process in a wireless communication system. The method for transmitting/receiving resource allocation information in a random access process in a wireless communication system, according to one aspect of the present invention, involves a base station receiving a code from a terminal, and transmitting, to the terminal, CDMA Allocation A-MAP IE (code division multiple access allocation Advanced-MAP information element) including a field which indicates whether it is a source allocation for a bandwidth request or a resource allocation for ranging. | 03-15-2012 |
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 |
20120069813 | Method for Performing a Bandwidth Request Procedure, and Terminal Apparatus for Same - The present document describes a method in which a terminal performs a bandwidth request procedure when a single terminal makes a bandwidth request for a plurality of flows. The present document also describes an improved bandwidth request header. When the terminal is allocated with an uplink resource for the transmission of a bandwidth request header from a base station during the bandwidth request procedure, the terminal may notify the base station, using a bandwidth request header indicating a bandwidth size of zero, that it has no data for which a bandwidth request is to be made to the base station, if the terminal has no data for which a bandwidth request is to be made to the base station. | 03-22-2012 |
20120099557 | METHOD FOR DETERMINING A MODULATION AND CODING SCHEME IN A BROADBAND WIRELESS ACCESS SYSTEM - The present invention relates to a broadband wireless access system, and more particularly, to a method in which a terminal determines a modulation and coding scheme (MCS) of uplink allocation information received from a base station under a condition such as that of a random access process in which both the terminal and the base station do not know each other's channel state. According to one exemplary embodiment of the present invention, a method of transmitting data comprises: receiving, from the base station, uplink allocation information for indicating an uplink resource for transmitting the specific data: determining a lowest modulation and coding scheme (MCS) to be applied to the specific data using information on the size and allocation size of the specific data; and transmitting to the base station via the uplink source, the specific data to which the determined MCS is applied. | 04-26-2012 |
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 |
20120113940 | METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING CONTROL INFORMATION FOR ADDITIONAL BROADCAST INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method and apparatus for transmitting/receiving control information for additional broadcast information in a wireless communication system. According to one aspect of the present invention, a method for transmitting control information for additional broadcast information in a wireless communication system comprises a step in which a base station transmits control information containing information on the transmission time of the additional broadcast message, and transmits the additional broadcast message at said transmission time. | 05-10-2012 |
20120113947 | METHOD FOR EFFICIENTLY TRANSMITTING BROADCASTING MESSAGE IN BROADBAND WIRELESS ACCESS SYSTEM - The present invention relates to a broadband wireless access system, and more particularly to a method for efficiently communicating scheduling information about a broadcasting message to a terminal. The method for transmitting the broadcasting message in the broadband wireless access system comprises the steps of: transmitting a first map including scheduling information for at least one broadcasting message transmitted within a predetermined transmission unit to a terminal; and broadcasting the message through a resource region indicated by the scheduling information. In the method, it is desirable that the first map is an extended map of a second map including non-user specific control information. | 05-10-2012 |
20130223331 | Method and Apparatus for Allocating Bandwidth Request Channel in Wireless Communication System Including Relay Station - A method and apparatus of allocating a bandwidth request channel (BRCH) in a wireless communication system including a relay station (RS) is provided. At least one first BRCH for a bandwidth request of a mobile station (MS) connected to a base station (BS) and at least one second BRCH for a bandwidth request of the RS are allocated. An opportunity index is assigned to each of the at least one first BRCH and the at least one second BRCH, and the opportunity index assigned to the at least one second BRCH is started after the opportunity index assigned to the at least one first BRCH. | 08-29-2013 |
20140179326 | CONNECTION SETTING METHOD AND APPARATUS FOR CLIENT COOPERATION IN WIRELESS COMMUNICATION SYSTEM - Provided are a connection setting method and apparatus for client cooperation in a wireless communication system. A base station and a source device search for at least one candidate cooperative device for the source device. The base station determines whether a list of candidate cooperative devices for the source device is valid. The source device is connected to a recommended candidate cooperative device selected from the list of candidate cooperative devices. At this stage, the base station and the source device are connected through a first system, and the base station and the recommended candidate cooperative device are connected through a second system. | 06-26-2014 |