Patent application number | Description | Published |
20110034145 | EMERGENCY COMMUNICATIONS SUPPORT METHOD - Various methods for supporting emergency communication in a wireless access system that supports a relay system are disclosed. A method for supporting emergency communication in a wireless access system comprises the steps of configuring a path for emergency communication with a first mobile station of an emergency mode and one or more second mobile stations located near the first mobile station; allocating a first resource zone for emergency communication to the first mobile station; transmitting allocation information on the first resource zone to one or more of the first mobile station and the second mobile station; and receiving emergency data through the first resource zone. | 02-10-2011 |
20110044287 | METHOD FOR REDUCING HANDOVER LATENCY - The present invention relates to a handover procedure, and more particularly, to a method of reducing latency in performing handover using fast ranging. The present invention includes the steps of receiving a handover message including a specific ranging code and uplink resource information from a serving base station and transmitting the specific ranging code to a target base station using the uplink information. | 02-24-2011 |
20110051667 | METHOD FOR PERFORMING RANGING IN WIRELESS COMMUNICATION SYSTEM SUPPORTING TWO WIRELESS COMMUNICATION SCHEMES - A method for performing ranging is disclosed. The method for performing ranging in a wireless communication system which simultaneously supports a legacy system and a new system includes a method for additionally allocating a ranging channel to a zone other than a legacy zone and a method for re-using a legacy ranging channel within the legacy zone. When the legacy ranging channel is re-used, ranging codes may be shared by a legacy mobile station and a new system mobile station or may be separated on a ranging code domain. Limited radio resources can be effectively employed by re-using the legacy ranging channel. | 03-03-2011 |
20110194412 | METHOD AND APPARATUS FOR WIRELESS RESOURCE ALLOCATION FOR RELAY IN WIRELESS COMMUNICATION SYSTEM - A method of allocating a radio resource for a relay station in a wireless communication system is disclosed. The method comprise allocating a relay zone to the relay station in a subframe and transmitting a relay control channel to the relay station by using the relay zone, wherein the subframe comprises a plurality of orthogonal frequency division multiplexing (OFDM) symbols in a time domain and a plurality of subcarriers in a frequency domain, wherein the subframe is divided into a user zone used by a user equipment in a cell and the relay zone used by the relay station, and wherein the relay zone comprises some of the plurality of subcarriers. According to the present invention, a subframe structure provides backward compatibility with a legacy wireless communication system. A relay station can effectively find a radio resource allocated to the relay station, thereby decreasing a decoding time. | 08-11-2011 |
20140036803 | CONTROL INFORMATION TRANSMISSION AND UPLINK CONTROL CHANNEL RESOURCE MAPPING - The disclosure is related to transmitting downlink control information through a downlink control channel adopted in a data region, and transmitting uplink control information for user equipment receiving the downlink control information. Furthermore, the disclosure is related to performing a physical uplink control channel (PUCCH) resource mapping for uplink HARQ-ACK/NACK feedback of user equipment. Herein, the uplink HARQ-ACK/NACK feedback may be performed by the user equipment in response to a downlink data channel assigned according to downlink scheduling information transmitted through the adopted downlink control channel. | 02-06-2014 |
20140071918 | RECEPTION AND CONFIGURATION OF DOWNLINK CONTROL CHANNEL - The disclosure is related to reception and configuration of a downlink control channel. Particularly, the present disclosure relates to a method and an apparatus (e.g., user equipment) for receiving a downlink control channel located in a data region, and a method and an apparatus (e.g., a transmission/reception point) for configuring and transmitting the downlink control channel. | 03-13-2014 |
20140078983 | TRANSMISSION AND RECEPTION OF CONTROL INFORMATION - The disclosure is related to transmitting control information in a transmission/reception point and to receiving the control information in user equipment. Particularly, the present disclosure relates to transmitting the control information for user equipment which receives downlink control information through a downlink control channel newly defined in a data region. Furthermore, the present disclosure relates to performing a resource mapping for enhanced control channel elements (ECCEs) of an enhanced physical downlink control channel (EPDCCH). | 03-20-2014 |
20140078987 | TRANSMISSION AND RECEPTION OF CONTROL INFORMATION - The disclosure is related to transmitting control information in a transmission/reception point and to receiving the control information in user equipment. Particularly, the present disclosure relates to transmitting the control information for user equipment which receives downlink control information through a downlink control channel newly defined in a data region. Furthermore, the present disclosure relates to performing a resource mapping for enhanced control channel elements (ECCEs) of an enhanced physical downlink control channel (EPDCCH). | 03-20-2014 |
20140092836 | ADJUSTING BLIND DECODING OF DOWNLINK CONTROL CHANNEL - The present disclosure is related to adjusting a blind decoding of a downlink control channel in a base station. A method of adjusting a blind decoding of a downlink control channel may include creating an enhanced physical downlink control channel (EPDCCH) using the number of EPDCCH candidates per aggregation level (AL) in each of one or more EPDCCH sets for user equipment; and transmitting the created EPDCCH to the user equipment. Herein, the number of EPDCCH candidates is determined based on at least one of (i) a resource size associated with configuration of each EPDCCH set and (ii) the total number of EPDCCH sets. | 04-03-2014 |
Patent application number | Description | Published |
20100177717 | GROUPING BASED RESOURCE ALLOCATION METHOD, METHOD FOR TRANSMITTING SIGNAL USING THE SAME, AND GROUPING BASED RESOURCE ALLOCATION CONTROLLER - A grouping based resource allocation method, a method for transmitting a signal using the same, and a grouping based resource allocation controller are disclosed. That is, the method including grouping a plurality of user equipments (UEs) to a predetermined number of groups using feedback information received from the plurality of UEs and dynamically allocating communication resources to the UEs included in the groups according to the group based feedback information and the method for transmitting the signal using the same are disclosed. In addition, a grouping based resource allocation controller including a grouping module and control module for performing the above-described method in a base station is disclosed. | 07-15-2010 |
20100222055 | METHOD OF PERFORMING CELL RESELECTION PROCEDURE IN WIRELESS COMMUNICATION SYSTEM - A method of performing a cell reselection procedure in a wireless communication system includes evaluating priorities of a serving cell and neighbor cells, each of which use different frequency bands, performing inter-frequency measurement on a neighbor cell which has a higher priority than the serving cell, performing the inter-frequency measurement on a neighbor cell which has an equal or lower priority than the serving cell, when a signal characteristic of the serving cell is less than a threshold, and performing cell reselection according to the priorities. | 09-02-2010 |
20110013595 | METHOD FOR REDUCING HANDOVER INTERRUPTION TIME IN TERMINAL - A method for reducing handover interruption time in a mobile station is disclosed, in which a mobile station performs a ranging procedure using a dedicated ranging code previously allocated from a target base station. The dedicated ranging code allocated by the target base station may be provided through the serving base station, or may directly be provided from the target base station. | 01-20-2011 |
20110038285 | METHOD FOR TRANSMITTING SUB-FRAME DESIGNATION INFORMATION TO A DOWNLINK IN A RADIO COMMUNICATION SYSTEM - A method of transmitting subframe designating information in downlink in a wireless communication system is disclosed. The present invention includes generating the subframe designating information for designating a subframe of a specific type in a radio frame and transmitting the generated subframe designating information to a user equipment, wherein the subframe designating information includes initial location information indicating an initial location of the subframe of the specific type on the radio frame and period information indicating a period for the subframe of the specific type to be repeated. | 02-17-2011 |
20110126068 | SIGNAL TRANSMISSION METHOD USING MULTIPLE HARQ - A method is described for transmitting signals in a mobile communication system which splits an information block into a plurality of split-information blocks and performs a hybrid automatic repeat request (HARQ) process upon each of the split-information blocks. A method is also described for reducing control information overhead by transmitting control information only through one control channel when splitting an information block and transmitting split-information blocks through a plurality of subframes or a plurality of resource blocks. The segmentation of the information block is performed in a physical layer to reduce medium access control (MAC) overhead and to simplify implementation. | 05-26-2011 |
20110128901 | METHOD FOR SAVING POWER IN A MULTI-CARRIER WIRELESS ACCESS SYSTEM - A method for saving power in a multi-carrier wideband wireless access system is provided. A method for saving the power of a receiver in a multi-carrier wireless communication system includes acquiring multi-carrier information from a transmitter on a primary carrier, entering one or more secondary carriers satisfying a predetermined power saving mode entry condition out of one or more secondary carriers included in the multi-carrier information into a power saving mode, and receiving data during a listening interval according to the power saving mode on the one or more secondary carriers entering the power saving mode. The multi-carrier information includes at least one of information about a plurality of available carriers, information indicating the primary carrier and the one or more secondary carriers out of the plurality of available carriers, and information about the power saving mode entry condition of the one or more secondary carriers. | 06-02-2011 |
20110261749 | METHOD OF TRANSMITTING PREAMBLE FOR SUPPORTING RELAY SYSTEM - The present invention relates to a frame structure and method for supporting a relay. According to an embodiment of the present invention, a method for transmitting a preamble from a network supporting a relay includes transmitting a first preamble for establishing synchronization with at least one of a mobile station and a relay station, and transmitting a second preamble including supplemental information for accurately establishing synchronization with at least one of the mobile station and the relay station. | 10-27-2011 |
20110268016 | Method of Control Information for Supporting Relay System - A frame structure supporting a relay and a method of transmitting control information for supporting a relay system are disclosed. The method of transmitting control information for supporting a relay system comprises configuring a frame to which the relay system is applied; and transmitting a first message to one or more of a mobile station and relay stations, the first message including offset information indicating a beginning time of the frame and zone allocation information indicating configuration of the frame. In this case, a downlink zone of the frame includes a downlink transmit zone and a downlink access zone. | 11-03-2011 |
20110275363 | METHOD FOR IDENTIFYING A MBSFN SUBFRAME AT A USER EQUIPMENT (UE) IN A WIRELESS COMMUNICATION SYSTEM - A method for identifying a MBSFN (Multimedia Broadcast multicast service Single Frequency Network) subframe at a user equipment (UE) in a wireless communication system is disclosed. Receiving module may receive receiving a subframe type information from an base station (BS). Receiving module may receive type information of the MBSFN subframe. The identifying module may identify an index of a MBSFN subframe based on the received subframe type information. The identifying module may identify a type of the MBSFN subframe based on the received type information of the MBSFN subframe. Decoding module may decode only a physical control channel region of the MBSFN subframe based on the identified type of the MBSFN subframe. Alternatively, Decoding module may decode the MBSFN subframe if the identified type of the MBSFN subframe is a decodable type or a known type. | 11-10-2011 |
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 |
20110317614 | METHOD FOR TRANSMITTING AN UPLINK SIGNAL AND FEEDBACK INFORMATION, AND RELAY APPARATUS USING THE METHOD - The invention relates to a method for transmitting an uplink signal and feedback information of a relay, and to a relay apparatus using the method. The relay can receive information, constituting a downlink backhaul subframe and an uplink backhaul subframe from a base station. The relay can transmit an uplink signal via the relevant uplink backhaul subframe on the basis of the received information constituting the uplink backhaul frame. Further, the relay can receive a downlink reference signal from the base station, measure the status of a channel, and transmit the status of the channel in values, in various formats and in various points in time and cycles, to the base station. | 12-29-2011 |
20120026934 | METHOD FOR ENABLING RELAY NODE TO TRANSMIT UPLINK CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM AND THE RELAY NODE - Disclosed is a method for enabling a relay node to transmit uplink control information. The relay node can receive resource allocation information and sequence information according to the transmission format of a physical uplink control channel set from a base station in advance. Additionally, the relay node can transmit the uplink control information, to which a sequence corresponding to the received sequence information is applied, in at least one slot of a resource area, which is indicated by the received resource allocation information, through a fixed number of symbols. | 02-02-2012 |
20120026935 | METHOD FOR DETECTING HARQ/NACK FEEDBACK SIGNAL FROM REPEATER - Disclosed is a repeater apparatus for detecting a downlink HARQ ACK/NACK feedback signal from a base station. An RF (Radio Frequency) unit receives specific channel configuration information which includes offset information indicating the starting point of a specific channel to which said HARQ ACK/NACK feedback signal is transmitted from the base station and the position of the specific channel allocated for an exclusive use of said repeater apparatus within said specific channel from said start point, and receives the HARQ ACK/NACK feedback signal from said base station for an uplink transmission of said repeater. The processor detects said specific channel allocated for exclusive use of the repeater apparatus based on said received specific channel configuration information thereby decoding said received HARQ ACK/NACK feedback signal. | 02-02-2012 |
20120039239 | SIGNAL TRANSMITTING/RECEIVING METHOD FOR A RELAY NODE AND RELAY NODE USING THE METHOD - Disclosed is a method in which a relay node transmits/receives signals via a specific downlink subframe and a specific uplink subframe. The relay node may consider the propagation delay in accordance with the distance between a base station and the relay node to set a subframe timing for transmitting/receiving signals to/from the base station. The relay node may further consider the delay time of 0.5 symbol, 1 symbol or the like in addition to said propagation delay in the event of setting a downlink receiving timing. Setting an uplink subframe timing of the relay node can be divided into the event the timing is set on the basis of a backhaul link and the event the timing is set on the basis of an access link. In the event thee timing is set on the basis of the access link, the propagation delay can bee double that of the vent the timing is set on the basis of the backhaul link, which should be considered in setting the timing. | 02-16-2012 |
20120063386 | RELAY NODE AND METHOD FOR RECEIVING A SIGNAL FROM A BASE STATION IN A MOBILE COMMUNICATION SYSTEM - Provided are a method for receiving information on a relay node zone and reference signals for a relay node from a base station, and a relay node device using same. The relay node can receive information on at least one start point from the start points of a Relay-Physical Downlink Control Channel (R-PDCCH) and a Relay-Physical Downlink Shared Channel (R-PDSCH) for transmitting a signal from a base station to a relay node in a specific downlink subframe. Alternatively, the relay node can implicitly recognize the start points of the R-PDCCH and R-PDSCH set in advance. The relay node can recognize a signal from the base station in the specific downlink subframe based on the start point information after the time corresponding to at least one of the start points of the R-PDCCH and R-PDSCH. Also, the relay node can decode signals transmitted from a base station after the corresponding timing. | 03-15-2012 |
20120069790 | METHOD AND APPARATUS OF TRANSMITTING AND RECEIVING BACKHAUL DOWNLINK CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method and an apparatus of transmitting and receiving backhaul downlink control information in a wireless communication system. In the method for transmitting backhaul downlink control information from a base station in a wireless communication system according to one aspect of the present invention, the base station transmits resource allocation information to at least one terminal and at least one relay node via a relay-physical downlink control channel (hereinafter referred to as “R-PDCCH”); transmits backhaul system information to the at least one relay node and the at least one terminal via a relay physical downlink shared channel (hereinafter referred to as “R-PDSCH”) which is determined according to the resource allocation information; and changes a backhaul downlink resource block according to the backhaul system information. | 03-22-2012 |
20120069793 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION FROM RELAY NODE ON BACKHAUL UPLINK - According to one embodiment of the present invention, the method for transmitting control information from a relay node to a base station on a backhaul link comprises the steps of: determining whether one time slot of a backhaul uplink subframe from the relay node to the base station is a first type slot having transmitted symbol with guard time set or a second type slot without guard time set; diffusing the control information in a time domain using a first length sequence for the first type slot or a second length sequence for the second type slot; mapping the diffused control information on at least one slot from the first type slot or the second type slot; and transmitting the backhaul uplink subframe having more than one slot from the first type slot or the second type slot wherein the control information is mapped. | 03-22-2012 |
20120069795 | METHOD IN WHICH A RELAY ALLOCATES CARRIERS ON A BACKHAUL LINK AND AN ACCESS LINK IN A MULTI-CARRIER WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system, and more particularly, discloses a method and apparatus in which a relay allocates carriers on a backhaul link and an access link in a multi-carrier wireless communication system. The method in which the relay allocates resources in a multi-carrier wireless communication system in accordance with one embodiment of the present invention, comprises: determining a subframe pattern allocated on a first uplink component carrier to enable a backhaul uplink transmission from the relay to a base station; determining a subframe requiring reception of an access uplink from user equipment to the relay on the first uplink component carrier in accordance with a synchronous HARQ operation; and transmitting resource allocation control information containing carrier switching indicating information to the user equipment in the event the subframe requiring reception of an access uplink is determined to be the same as the subframe allocated for backhaul uplink transmission on the first uplink component carrier. | 03-22-2012 |
20120082124 | METHOD AND APPARATUS FOR TRANSMITTING SOUNDING REFERENCE SIGNAL - The present invention relates to a method for transmitting a sounding reference signal from a terminal in a wireless communication system, the method comprising: receiving resource operation information, which includes resource allocation information for channel sounding, from a base station; and transmitting the sounding reference signal through the entire or part of a resource region that is allocated for transmission of a demodulation reference signal on a physical uplink shared channel (PUSCH) according to the resource operation information. | 04-05-2012 |
20120099518 | APPARATUS FOR TRANSMITTING AND RECEIVING CONTROL INFORMATION FOR REPEATER AND METHOD THEREOF - Disclosed are an apparatus for transmitting and receiving control information for a relay node and a method thereof. The relay node for receiving control information in a wireless communication system comprises: a receiving module for receiving through higher layer signaling from a base station the information on a resource block (RB) which the relay node should search to receive the control information; a processor for detecting the control information from the first RB by blind-decoding at least one received RB which should be searched; and a receiving module for receiving through the first RB from the base station the control information detected by the processor. | 04-26-2012 |
20120099520 | SIGNAL TRANSMITTING AND RECEIVING METHOD OF REPEATER AND REPEATER USING THE SAME - The present invention relates to a method for a repeater to transmit and receive a signal on a downlink sub frame in a wireless communication system, comprising the steps of: transmitting a first physical downlink control channel (PDCCH) to terminals positioned within a repeater cell on a downlink sub frame; and receiving a second PDCCH or a physical downlink shared channel (PDSCH) from a base station after a first guard time succeeding a first PDCCH section elapses, wherein a second guard time succeeding the PDSCH or the second PDCCH received from the base station is allocated to the downlink sub frame, and the repeater receives the second PDCCH through a certain range of symbols in accordance with information on the predetermined control channel section, which is received from the base station. | 04-26-2012 |
20120106438 | METHOD FOR SENDING AN UPLINK CONTROL SIGNAL ON A WIRELESS COMMUNICATION SYSTEM AND A DEVICE THEREFOR - Disclosed in a method whereby a terminal sends an uplink control signal on a wireless communication system. More specifically, the present invention comprises the steps of generating an uplink control signal, allocating uplink sending resources to the uplink control signal, and sending the uplink control signal to a base station; a time resource in the uplink transmission resources is divided into sub-frame units divided into two slots; at least one of the two slots comprises one reference symbol for transmitting a reference signal; and in the slot comprising the one reference symbol, at least one of a plurality of data symbols for transmitting data signals is dropped. | 05-03-2012 |
20120113884 | METHOD OF ALLOCATING RESOURCE FOR RELAY - A method for wireless backhaul communication between a base station and a relay is disclosed. The base station enables a physical control channel to be set up, separately from the terminal that is used to transmit control information to each relay and the physical downlink control channel that has been set up. The base station can transmit data to the relay based on this control information. In a special embodiment, physical downlink control channel transmissions can be minimized by prescribing in advance the transmission of control information between the base station and the relay. | 05-10-2012 |
20120120868 | APPARATUS FOR TRANSMITTING AND RECEIVING CONTROL INFORMATION AND SYSTEM INFORMATION FOR REPEATERS AND METHOD THEREOF - A method of transmitting control information for a relay node (RN) from an eNode B in a wireless communication system includes transmitting information on a resource region of at least one relay-physical downlink control channel (R-PDCCH) including the control information for the RN and interleaving mode information on an interleaving mode applied to the at least one R-PDCCH to the RN, wherein the resource region of the at least one R-PDCCH is RN-specifically configured. | 05-17-2012 |
20140286233 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION FROM RELAY NODE ON BACKHAUL UPLINK - According to one embodiment of the present invention, the method for transmitting control information from a relay node to a base station on a backhaul link comprises the steps of: determining whether one time slot of a backhaul uplink subframe from the relay node to the base station is a first type slot having transmitted symbol with guard time set or a second type slot without guard time set; diffusing the control information in a time domain using a first length sequence for the first type slot or a second length sequence for the second type slot; mapping the diffused control information on at least one slot from the first type slot or the second type slot; and transmitting the backhaul uplink subframe having more than one slot from the first type slot or the second type slot wherein the control information is mapped. | 09-25-2014 |
20140321356 | RELAY NODE DEVICE FOR RECEIVING CONTROL INFORMATION FROM A BASE STATION AND METHOD THEREFOR - The present invention relates to a relay node device for receiving control information from a base station and a method therefor. The relay node device according to the present invention comprises: a receiver, which receives information about an area where a relay-physical downlink control channel (R-PDCCH), the channel for transmitting control information for the relay node from a base station, is allocated; a processor, which searches for at least one R-PDCCH for the relay node based on the R-PDCCH allocation information received; and an R-PDCCH receiver, which receives the at least one R-PDCCH from the fourth symbol of the first slot in a downlink backhaul subframe of the area where the at least one R-PDCCH searched for by the processor has been allocated. | 10-30-2014 |
Patent application number | Description | Published |
20100142485 | METHOD FOR PERFORMING HANDOVER IN WIRELESS COMMUNICATION SYSTEM - A method for performing a handover by a user equipment from a serving base station to a target base station includes transmitting a random access preamble to the target base station, receiving a random access response in response to the random access preamble; after receiving the random access response, transmitting a handover confirm message for indicating completion of the handover between the user equipment and the target base station, and transmitting a packet data sequence number report message indicating packet data received from the serving base station in a process of performing the handover. Repeated transmission of downlink data or uplink data can be avoided during a handover procedure. | 06-10-2010 |
20100208779 | Transmitter for Reducing Channel Selectivity - A transmitter for reducing time selectivity and/or frequency selectivity in a wireless communication system includes a plurality of transmit antennas, a phase shifter which is disposed for each transmit antenna and is configured to shift a phase of data transmitted through the transmit antenna by a phase shift value, and a channel selectivity processor configured to obtain the phase shift value by using a channel phase value fed back from a receiver. | 08-19-2010 |
20110128883 | RELAY STATION IN RADIO COMMUNICATION SYSTEM AND OPERATING METHOD FOR THE RELAY STATION - A method for operating a relay station in a wireless communication system includes: obtaining information regarding assigned subframes among a plurality of subframes; monitoring a PDCCH (Physical Downlink Control Channel) carrying information regarding a radio resource allocation within the assigned subframes; and receiving data from a base station on the basis of the radio resource allocation of the monitored PDCCH. The relay station may operate to guarantee compatibility with an existing terminal in a wireless communication system. Also, a method for assigning radio resources between a base station and the relay station is defined. | 06-02-2011 |
20110128893 | RESOURCE ALLOCATION METHOD FOR BACKHAUL LINK AND ACCESS LINK IN A WIRELESS COMMUNICATION SYSTEM INCLUDING RELAY - A resource allocation method of a relay station in a wireless communication system employing the relay station is provided. The method includes: receiving information on a resource allocation pattern for an access link and a backhaul link of a first frequency band; and determining a resource allocation pattern for an access link and a backhaul link of a second frequency band on the basis of the resource allocation pattern of the first frequency band, wherein the first frequency band is any one of an uplink frequency band and a downlink frequency band, and the second frequency band is a remaining one of the uplink frequency band and the downlink frequency band. | 06-02-2011 |
20110194502 | METHOD FOR TRANSMITTING VOIP PACKET - A method for transmitting a voice over Internet protocol (VoIP) packet includes allocating a radio resource for VoIP packet transmission to a user, transitioning a VoIP service from a talk period, in which the VoIP packet is transmitted using the radio resource, to a silence period in which the VoIP packet is not transmitted, releasing the radio resource during the silence period, and transitioning the VoIP service to the talk period by reallocating the radio resource. Limited radio resources can be further effectively used. | 08-11-2011 |
20110194523 | METHOD AND DEVICE FOR WIRELESS SUBFRAME RESOURCE ALLOCATION - The method for wireless resource subframe allocation comprises the following steps: allocation of the control channel based on the first RAT (Radio Access Technology) of the first control domain, which includes the OFDM symbol of the first number from the sub-frame containing multiple OFDM symbols and multiple subcarriers in the frequency domain; allocation of the control channel based on the second RAT of the second control domain including the OFDM symbol of the second number which follows said first control domain; and the allocation of a data channel in the data domain which includes the OFDM symbols positioned outside said first control domain and second control domain. This invention provides a sub-frame structure which is compatible with existing wireless communication systems. This method allows the continued use of existing control channel systems or base signal structures. The method is also capable of supporting advanced features. | 08-11-2011 |
20110211522 | Method and Apparatus for Performing HARQ Process in Wireless Communication System - A method of performing hybrid automatic repeat request (HARQ) by a source station in a wireless communication system is provided. The method includes: transmitting data to a destination station at a transmission start time; receiving an acknowledgment (ACK) or negative-acknowledgement (NACK) signal for the data from the destination station after a first transmission time interval elapses from the transmission start time; and upon receiving the NACK signal, retransmitting the data after a second transmission time interval elapses from the transmission start time, wherein the second transmission time interval is one transmission time interval selected from a plurality of predetermined transmission time intervals. Accordingly, the wireless communication system can perform a heterogeneous HARQ process in which an HARQ period, an ACK/NACK transmission start time, and the like are different. | 09-01-2011 |
20120033588 | METHOD FOR PERFORMING A HARQ OPERATION IN A RADIO COMMUNICATIONS SYSTEM, AND METHOD AND APPARATUS FOR ALLOCATION OF SUBFRAMES - There is provided a method for allocating subframes in a radio communications system that performs communication by using a radio frame including a plurality of subframes, the method including: selecting a backhaul downlink subframe in which a base station is to transmit a signal to a relay station; and allocating the backhaul downlink subframe to a substitution subframe which is not limitation subframes, when the selected backhaul downlink subframe corresponds to one of the limitation subframes, wherein the limitation subframes are subframes in which the relay station is to transmit essential information to a relay user equipment. Therefore, it is possible to overcome a limitation that is present in a link between the base station and the relay station, perform an HARQ operation, and improve the efficiency of radio resource allocation. | 02-09-2012 |