Patent application number | Description | Published |
20100309849 | METHOD OF LOW DUTY MODE OPERATION FOR FEMTO BASE STATION - A method of an efficient low duty mode (LDM) operation for a femto base station is disclosed. The method of a low duty mode (LDM) operation for a femto base station comprises operating at an available interval of a first length according to a default LDM pattern; and operating at an unavailable interval of a second length according to the default LDM pattern, wherein the available interval begins with a frame including a first preamble, the first preamble including information of carrier configuration and system bandwidth. | 12-09-2010 |
20110002303 | RANGING BY MOBILE STATION IN FEMTO SYSTEM - A ranging method in a mobile station of a femto system is disclosed. According to the present invention, a femto base station enables non-synchronized ranging channel (NS-RCH) information to be carried on S-SFH SP | 01-06-2011 |
20110003603 | METHOD OF PAGING IN A WIRELESS COMMUNICATION SYSTEM - A method of paging in a wireless communication system is disclosed. In the method, a base station generates a paging advertisement message that includes a paging group ID bitmap indicating whether there are any mobile stations that perform paging for each of paging groups that include the base station, and transmits the paging advertisement message to the mobile stations. | 01-06-2011 |
20110026475 | METHOD FOR PERFORMING CARRIER MANAGEMENT PROCEDURE IN A MULTI-CARRIER SUPPORTED WIDEBAND WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR THE SAME - A method and apparatus for performing carrier management in a broadband wireless communication system supporting multiple carriers are disclosed. The method for a mobile station to perform carrier management procedure with a base station supporting multiple carriers includes receiving a carrier management command message from the base station, the carrier management command message including an action code for carrier management and a polling bit in a MAC Control Extended Header (MCEH) indicating whether an acknowledgement message is required, transmitting the acknowledgement message in response to the carrier management command message to the base station when the carrier management command message is successfully received and the polling bit is set to 1, and transmitting a carrier management indication message corresponding to the action code included in the carrier management command message to the base station. | 02-03-2011 |
20110051694 | METHOD OF TRANSMITTING AND RECEIVING UPLINK DATA USING TRANSMISSION OF PROFILE INDEXES - A method of transmitting and receiving uplink data using transmission of profile indexes is disclosed. The method of includes transmitting, at a mobile station, any one of codewords mapped to a plurality of bandwidth request profiles according to a service characteristic to a base station through a fast feedback channel, and upon receiving an uplink grant message for an up-link resource allocated in correspondence to the codeword from the base station, transmitting data though the uplink resource. As a result, collision does not occur during a resource request, quality of service (QoS) of a real-time traffic sensitive to delay can be satisfied, an uplink allocation request procedure is simplified thus reducing message overhead, and a resource can be efficiently used according to a characteristic of a service provided to the mobile station. | 03-03-2011 |
20110065467 | METHOD OF PAGING - The present invention relates to a wireless access system, and more particularly, to a method of transmitting/receiving a paging message by minimizing power consumption of a mobile station. A method of performing paging for a mobile station in idle mode comprises receiving a deregistration command message including a paging cycle, a paging offset and a paging group identifier and if moving away into a different cell area, performing a location update with a target base station of the different cell area. Preferably, the location update is performed only if moving away into an initially different cell area but is not performed if moving into another different cell area. | 03-17-2011 |
20110194531 | METHOD OF NETWORK RE-ENTRY IN A BROADBAND WIRELESS ACCESS SYSTEM - A method of performing network re-entry of a mobile station based on restart of a base station and an apparatus for performing the same are disclosed. The method comprises the steps of receiving a first message from a base station, the first message including a restart count of which value is varied whenever the base station is restarted; comparing the restart count value with a count value previously stored; and transmitting a second message to the base station if the count values are different from each other, the second message including a first identifier for identifying the mobile station in respect of connection information (context) of the mobile station and a ranging purpose indication field set to a value indicating network re-entry due to restart of the base station. | 08-11-2011 |
Patent application number | Description | Published |
20100118991 | Method For Allocating Radio Resource In Wireless Communication System And Method For Transmitting Or Receiving Data Using The Same - A method for allocating a radio resource in a wireless communication system comprises defining a plurality of resource regions within a frame, a resource region comprising at least one orthogonal frequency division multiple access (OFDMA) symbol and at least one subchannel, configuring radio resource allocation information indicating which resource region selected from the plurality of resource regions is allocated to a UE, the radio resource allocation information comprising at least one resource region identifier (ID), a resource region ID indicating a resource region selected from the plurality of resource regions, and transmitting the radio resource allocation information to the UE. | 05-13-2010 |
20100195546 | METHOD OF COMMUNICATION SUPPORTING HALF-DUPLEX FREQUENCY DIVISION DUPLEX - A method of communication supporting half-duplex frequency division duplex (H-FDD) is provided. The method includes receiving a group switching indicator, wherein the group switching indicator indicates switching among a plurality of groups, and the plurality of group use different downlink subframes in time domain and switching to the group indicated by the group switching indicator. | 08-05-2010 |
20100220675 | METHOD OF TRANSMITTING FEEDBACK MESSAGE IN WIRELESS COMMUNICATION SYSTEM - A method of transmitting a feedback message in wireless communication system is provided. The method includes selecting N best subbands of M subbands according to CQI, where both M and N are a natural number and M is larger than N, generating multiple input multiple output (MIMO) information comprising N codebook indexes and N differential CQIs and transmitting the feedback message comprising the MIMO information. | 09-02-2010 |
20100265898 | METHOD OF TRANSMITTING ACK/NACK SIGNAL IN WIRELESS COMMUNICATION SYSTEM - A method of transmitting an ACK/NACK signal via an ACK/NACK channel including one or more tiles comprised of a plurality of OFDM symbols in a time domain and a plurality of subcarriers in a frequency domain in a wireless communication system includes generating a first codeword by applying a first spreading code to data symbols and pilot symbols, wherein the tile includes a plurality of data subcarriers and a plurality of pilot subcarriers, the data symbols are allocated to the plurality of data subcarriers and the pilot symbols are allocated to the plurality of pilot subcarriers, generating a second codeword by allocating data symbols applied a second spreading code to the plurality of data subcarriers, and transmitting the first and second codewords. | 10-21-2010 |
20110159903 | METHOD AND APPARATUS FOR COMMUNICATION USING MULTIPLE CARRIERS - A method and apparatus for communication using multiple carriers is provided. A mobile station receives information regarding at least one assigned carrier selected from the available carriers based on the multiple carrier capability from a base station. The mobile station activates or inactivates the at least one assigned carrier by receiving a message comprising information indicating activation or inactivation of the at least one assigned carrier from the base station. Signaling overhead for managing multiple carriers may be reduced. | 06-30-2011 |
20110205997 | METHOD FOR PERFORMING BANDWIDTH REQUEST PROCESS IN WIRELESS COMMUNICATON SYSTEM - A method for performing a bandwidth request procedure in a wireless communication system includes: transmitting a bandwidth request indicator and a bandwidth request message through a bandwidth request channel; receiving an uplink grant message indicating uplink radio resource in response to the bandwidth request indicator and the bandwidth request message; and transmitting uplink data after receiving the uplink grant message, wherein the uplink grant message includes information regarding the type of the uplink grant message. A bandwidth request procedure can be performed quickly and effectively. | 08-25-2011 |
20110299446 | APPARATUS AND METHOD FOR PERFORMING A HANDOVER IN A WIRELESS COMMUNICATION SYSTEM - A method of performing a handover in a wireless communication system employing a macro base station and a femto base station is provided. The method comprising: monitoring an uplink signal transmitted from a user equipment to the macro base station; transmitting a handover initiation message to the macro base station on the basis of a result of comparing the uplink signal's strength obtained by the monitoring with a reference value; and performing a handover of the user equipment from the macro base station to the femto base station. According to the present invention, there is provided a method of initiating a handover by a femto base station by fining user equipments located in a cell coverage of the femto base station. In addition, a signaling overhead is reduced by utilizing previously existing information such as uplink transmit power. | 12-08-2011 |