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Automatic Repeat Request patents



      
           
This page is updated frequently with new Automatic Repeat Request-related patent applications. Subscribe to the Automatic Repeat Request RSS feed to automatically get the update: related Automatic RSS feeds. RSS updates for this page: Automatic Repeat Request RSS RSS


Transmission diversity and multiplexing for harq-ack signals in communication systems

Method and device for transmitting reverse control signal in mobile communication system

Precoding selection for retransmission in uplink mimo hybrid arq

Date/App# patent app List of recent Automatic Repeat Request-related patents
08/28/14
20140241280
 Mobile communication system, base station apparatus, mobile station apparatus, and mobile communication method patent thumbnailnew patent Mobile communication system, base station apparatus, mobile station apparatus, and mobile communication method
A mobile station apparatus that includes a controller that reduces transmission power in case that data is transmitted simultaneously and a transmission circuit that simultaneous transmits said data using a plurality of channels, where the plurality of channels consists of at least one physical uplink control channel and at least one physical uplink shared channel. The transmission circuit of the mobile station apparatus also transmit hybrid automatic repeat request control information on said at least one physical uplink shared channel and also transmits channel state information on said at least one physical uplink control channel..
08/21/14
20140233506
 Transmission diversity and multiplexing for harq-ack signals in communication systems patent thumbnailTransmission diversity and multiplexing for harq-ack signals in communication systems
A method and apparatus are described for a user equipment (ue) to transmit in a control channel acknowledgement signals associated with a hybrid automatic repeat request process (harq-ack signals) in response to receiving transport blocks (tbs) transmitted from a base station. The ue conveys the harq-ack information by selecting one resource from multiple resources in the control channel and by selecting a constellation point of the modulation scheme for the harq-ack signal.
08/14/14
20140226613
 Method and device for transmitting reverse control signal in mobile communication system patent thumbnailMethod and device for transmitting reverse control signal in mobile communication system
The present invention pertains to a method and device for transmitting a control signal, and a method for a terminal to transmit a control signal according to one embodiment of the present invention can comprise: a step for sensing a forced termination in a first subframe during active time; and a step in which if the forced termination is sensed and if, in a second subframe among a pre-set number of subframes after the first subframe, channel quality indicator (cqi) transmission via a physical uplink control channel (pucch) is set, and if neither one among hybrid automatic repeat request (harq) feedback transmission and physical uplink shared channel (pusch) transmission is set in the second subframe, the cqi transmission is executed via the pucch. The embodiment of the present invention enables power consumption by the terminal to be reduced..
08/07/14
20140219379
 Precoding selection for retransmission in uplink mimo hybrid arq patent thumbnailPrecoding selection for retransmission in uplink mimo hybrid arq
A method implemented in a user terminal is disclosed. The method comprises obtaining known precoding matrix p of rank r and modulation and coding scheme assignments used in an original transmission, and a desired retransmission rank r′, forming an approximate channel covariance matrix, estimating a minimum mean square error receiver sinr for each layer to be retransmitted responsive to said forming, and finding a retransmission precoding matrix from a preceding codebook that maximizes a sum-rate for enabling precoding selections for retransmissions in uplink multiple-input multiple-output mimo hybrid automatic repeat request harq.
08/07/14
20140219207
 Method for allocating physical hybrid automatic repeat request indicator channel patent thumbnailMethod for allocating physical hybrid automatic repeat request indicator channel
A method for transmitting acknowledgement/negative acknowledgement (ack/nack) signals by an apparatus in a wireless communication system is discussed. The method includes spreading ack/nacks using spreading codes of a spreading factor, the spreading factor being one of a spreading factor 2 and a spreading factor 4; and transmitting each of the one or more physical hybrid arq indicator channel (phich) groups through a plurality of units of four resource elements, each phich group carrying one or more spread ack/nacks, wherein the number of phich groups for she spreading factor 2 is determined as twice of the number of phich groups for the spreading factor 4..
08/07/14
20140219143
 Selection of acknowledgment timing in wireless communications patent thumbnailSelection of acknowledgment timing in wireless communications
Disclosed is a method including communicating, by a mobile device, with a base station via first and second component carriers having different frequency bands and time division duplexing (tdd) configurations. The method may include receiving one or more downlink transmissions via the second component carrier.
07/31/14
20140211746
  patent thumbnail
A base station receives an uplink data packet from a user equipment based on a synchronous hybrid automatic repeat request (harq) protocol, and transmits a first information element and a second information element in parallel to the user equipment. The first information element indicates whether to perform a retransmission of the uplink data packet, and the second information element indicates modulation and coding scheme (mcs) for the retransmission.
07/31/14
20140211722
 Harq process utilization in multiple carrier wireless communications patent thumbnailHarq process utilization in multiple carrier wireless communications
Methods and apparatus utilize hybrid automatic repeat request (harq) transmissions and retransmissions that are usable on multiple carriers, i.e. Joint harq processes.
07/24/14
20140204961
 Signaling patent thumbnailSignaling
The invention relates to an apparatus including at least one processor and at least one memory including a computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to: choose more than one subframes from subframes targeted to at least two of the following: physical uplink control channel acknowledgement/no-acknowledgement signaling, physical hybrid automatic repeat request indicator channel acknowledgement/no-acknowledgement signaling, physical uplink shared channel resource allocation grant signaling, physical downlink shared channel resource allocation grant signaling, and form a periodic signaling pattern to obtain a flexible subframe configuration for uplink and downlink signaling by using the chosen more than one subframes.. .
07/24/14
20140204810
 Aro values in pucch resource allocation for epdcch in tdd patent thumbnailAro values in pucch resource allocation for epdcch in tdd
Methods, apparatuses, and computer program products for defining aro values in tdd are provided. One method includes defining acknowledgement (ack)/negative acknowledgement (nack) resource offset (aro) values in time division duplex (tdd) with a first set of values and a second set of values.
07/24/14
20140204807
Method and apparatus for performing uplink/downlink transmission in a flexible subframe
A method and apparatus for performing uplink/downlink (ul/dl) transmission in a flexible subframe are provided. The method includes receiving downlink transmission configuration information in a flexible subframe that is different from configuration information of a subframe that has a fixed duplexing direction; detecting downlink control information transmitted by a base station in the flexible subframe; receiving downlink data corresponding to the downlink control information; and reporting hybrid automatic repeat request acknowledgment (harq-ack) for the downlink data and downlink channel state indication (csi) information to the base station..
07/24/14
20140204783
System and methods of dynamic tdd configurations
Solutions to support the coexistence of legacy ues and new released ues in adaptive tdd systems are proposed. Methods of tdd grouping, rach (random access channel) resource allocation, and dl/ul data transmission and harq (hybrid automatic repeat request) process to serve legacy ues without interfering the operation of new released ues are proposed.
07/17/14
20140198737
Overhead reduction for transmission of acknowledgment signals
A method and apparatus for compressing resources used for transmitting acknowledgment signals from user equipments (ues). An acknowledgment signal is in response to detections from a ue of one or more physical downlink control channels (pdcchs) in respective one or more transmission time interval (ttis) within m ttis.
07/17/14
20140198731
Devices for sending and receiving feedback information
An evolved node b (enb) for sending feedback information is described. The enb includes a processor and instructions stored in memory that is in electronic communication with the processor.
07/17/14
20140198730
Devices for sending and receiving feedback information
An evolved node b (enb) for sending feedback information is described. The enb includes a processor and instructions stored in memory that is in electronic communication with the processor.
07/17/14
20140198690
Method of remapping hybrid automatic repeat request timeline in time division duplex uplink-downlink reconfiguration
A method of remapping hybrid automatic repeat request (harq) timeline in time division duplex (tdd) uplink-downlink (ul-dl) reconfiguration, for a communication device in a wireless communication system is disclosed. The method includes being reconfigured from a first tdd ul-dl configuration in a first radio frame to a second tdd ul-dl configuration in a second radio frame, determining a tdd ul-dl reference configuration according to ul subframe allocations of the first and second tdd ul-dl configurations in the first radio frame, and performing harq processes of the first tdd ul-dl configuration according to a harq timeline of the tdd ul-dl reference configuration during the first and second radio frames..
07/10/14
20140192741
Method and apparatus for transmitting and receiving control information in a wireless communication system
A method in a wireless communication system is provided. The method includes generating a message including an indicator indicating whether a connection to perform automatic repeat request reset is a downlink connection or an uplink connection and transmitting the message..
07/03/14
20140185569
Mobile station device, radio communication method and circuit device
A mobile station apparatus, that communicates with a base station apparatus, includes a reception unit that receives a physical downlink shared channel and information indicating radio resources for transmission of a physical uplink shared channel associated with contention based procedure and a transmission unit that transmits hybrid automatic repeat request (harq) information in response to the physical downlink shared channel and the physical uplink shared channel. The transmission unit also transmits, in case that transmissions of the harq information and the physical uplink shared channel happen in a single subframe, either both of the harq information and the physical uplink shared channel or the physical uplink shared channel without the harq information in the single subframe on the basis of a configuration..
07/03/14
20140185534
Method and system for hybrid automatic repeat request combining on an lte downlink control channel
The present technology provides for an lte system comprising a ue which is configured to perform blind harq combining of pdcch messages, and an enb which is configured with a harq transmission mechanism for such pdcch messages. The pdcch messages may be uplink or downlink grant messages, for example.
06/26/14
20140177687
Modulation method and apparatus with consideration of adaptive hybrid automatic repeat request in wireless communication system
A modulation method and an apparatus with consideration of adaptive hybrid automatic repeat request (harq) in a wireless communication system are provided. The method of a transmission end supporting a hybrid modulation technique in which different types of modulation schemes are mixed, information of a channel state with a reception end is collected.
06/26/14
20140177586
Method and apparatus for transmitting uplink control information in wireless access system
The present invention relates to a method for transmitting channel quality control information in a wireless access system, which supports a hybrid automatic repeat request (harq), by using two transmission blocks. The method, according to one embodiment of the present invention, comprises the steps of: a terminal receiving a physical downlink control channel (pdcch) signal including downlink control information (dci); calculating the number of encoding symbols required for transmitting the channel quality control information by using the dci; and transmitting the channel quality control information through a physical uplink shared channel (pusch) on the basis of the number of the encoding symbols..
06/26/14
20140177545
Time multiplexed channel state information reporting in a multi antenna wireless communication system
The embodiments herein relates to a method in a user equipment (305) for enabling a base station (301) to schedule the user equipment (305) in a wireless communication system (300). The wireless communication system (300) is in multiple input multiple output, mimo, mode and comprises four transmit antennas.
06/26/14
20140177491
Base station, terminal, system and method for data transmitting in time-division duplex system
A base station, a terminal, a system and methods for performing data transmission in a time division duplex (tdd) system are disclosed. One of the methods includes: the base station sending an uplink scheduling grant signaling to the terminal on a carrier m, and after receiving uplink data sent by the terminal through a physical uplink shared channel (pusch) on a carrier n, the base station sending an ack/nack feedback signaling corresponding to the pusch to the terminal on the carrier m; wherein, m≠n; a timing relationship between a subframe by which the base station sends the uplink scheduling grant signaling and/or the ack/nack feedback signaling and a subframe where the pusch is located is identical with a hybrid automatic repeat request (harq) timing relationship corresponding to an uplink/downlink configuration of the carrier m or the carrier n..
06/19/14
20140173372
System and method for terminal-group based harq for cellular integrated d2d communications
System and method embodiments are provided to support network communications with groups of ues. The embodiments include a two-level group-based hybrid-automatic repeat request (harq) mechanism and acknowledgement (ack)/negative ack (nack) feedback.
06/19/14
20140169267
Distributed arq for wireless communication system
Systems and methods for providing distributed automatic repeat request (arq) in a wireless communication system are described herein. In one embodiment, a relay station interconnects a base station of the wireless communication system and one or more mobile stations.
06/19/14
20140169261
System and method for ue fountain relay based network
System and method embodiments are provided for enabling flexible and reliable ue-to-ue based relay. The embodiments include using fountain codes for combining signals at a suitable network layer higher than a media access control (mac) sub-layer and using a mac sub-layer hybrid automatic repeat request (harq) transmission scheme.
06/19/14
20140169242
Method for transmitting control information and apparatus for same
The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting uplink control information in a wireless communication system that supports carrier aggregation and operates in a time division duplex (tdd) scheme, the method comprising a step of transmitting a hybrid automatic repeat request-acknowledgement (harq-ack) for each component carrier (cc) according to a specific parameter; wherein if the specific parameter is smaller than a specific value, the harq-ack for each cc is individually transmitted, and if the specific parameter is equal to or larger than the specific value, the harq-ack for each cc is transmitted using the specific number of bit values corresponding to said harq-ack.
06/19/14
20140169238
Method and apparatus for hybrid automatic repeat request operation in a heterogeneous network architecture
Methods, systems and apparatus are provided for camping, assisted serving cell addition or removal, and discontinuous reception (drx) in networks having a macro cell and at least one assisted serving cell. In other aspects, enhancements to layer 1 channels and uplink timing alignments are provided in networks having a macro cell and at least one assisted serving cell.
06/19/14
20140169150
Method for mapping physical hybrid automatic repeat request indicator channel
A method for mapping a physical hybrid automatic repeat request indicator channel (phich) is described. The method for mapping a phich includes determining an index of a resource element group transmitting a repetitive pattern of the phich, according to a ratio of the number of available resource element groups in a symbol in which the phich is transmitted and the number of available resource element groups in a first or second ofdm symbol, and mapping the phich to the symbol according to the determined index.
06/12/14
20140161094
Method and apparatus for transmitting downlink hybrid automatic repeat request information in wireless communication system
A method and an apparatus and for transmitting downlink hybrid automatic repeat request (harq) information in a wireless communication system are provided. In the method, at least one physical resource block (prb) for transmitting a physical harq indicator channel (phich) signal is set among all prbs forming an available frequency band.
06/12/14
20140161071
Control design for backhaul relay to support multiple harq processes
A wireless communication network includes a base station and a relay station. The relay station is configured to relay communications between the base station and at least one subscriber station.
06/12/14
20140161001
Resource allocation for flexible tdd configuration
There is determined a first uplink-downlink configuration for subframes in a frame, which in various examples is fixed or dynamically allocated. A second uplink-downlink configuration is semi-statically allocated such as in system information.
06/05/14
20140153529
Method and apparatus for dynamically allocating harq processes in the uplink
Methods and apparatus for dynamically allocating harq processes are described. A wireless transmit/receive unit (wtru) includes a receive unit configured to receive signaling and a transmit unit.
05/22/14
20140140273
Method and apparatus for transceiving an uplink harq in a wireless communication system
The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transceiving an uplink hybrid automatic repeat request (harq). According to one embodiment of the present invention, a method for performing a harq operation in a terminal of a wireless communication system comprises the steps of: receiving, in a subframe n, an uplink grant message for first uplink data from a base station; determining a first harq process from among a plurality of harq processes associated with the subframe n; and transmitting, in a subframe n+k, the first uplink data to the base station through the first harq process..
05/15/14
20140133409
Asynchronous hybrid arq process indication in a mimo wireless communication system
Asynchronous hybrid automatic repeat request (arq) process identities are transmitted in a wireless communication system. A linking scheme is established between at least two sets of process identities of two respective corresponding codewords.
05/15/14
20140133391
System and method adopting a reliable stop-and-wait hybird automatic repeat request protocol
A communication system and a method for transferring data are provided. The method is implemented in a communication system having first and second network devices.
05/08/14
20140126499
Method and apparatus for transmitting harq indication information
A method for transmitting hybrid automatic repeat request (harq) indication information is provided. The method includes transmitting, by a user equipment (ue), uplink data on a physical uplink shared channel (pusch) according to scheduling of a base station, according to a synchronous harq timing relationship, detecting, by the ue, new uplink grant signaling and enhanced physical harq indicator channel phich (ephich) information from the base station, wherein ephich resources are mapped to at least parts of time frequency resources of one or multiple distributed enhanced physical downlink control channel (epdcch) sets, if the uplink grant signaling is not detected, one of retransmitting and not transmitting, by the ue, the uplink data.
05/08/14
20140126491
Efficient allocation of uplink harq-ack resources for lte enhanced control channel
Systems and methods for selecting physical uplink control channel (pucch) resources are disclosed. An enhanced physical downlink control channel (epdcch) is detected in signals received from a base station in a first subframe.
05/08/14
20140126467
Multiple outer loop link adaptation
Systems and methods for subframe-based link adaptation for a radio signal in a cellular communications network are disclosed. In one embodiment, a base station obtains a hybrid automatic repeat request acknowledgement for data transmitted between the base station and a mobile terminal in a radio signal of the base station.
05/01/14
20140119339
Method for controlling error for carrier aggregation and apparatus for same
The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for carrying out a hybrid automatic repeat request (harq) process when a plurality of cells are configured, comprising the following steps: receiving scheduling information for transmitting data from a first cell; operating a first harq process from the first cell based on the scheduling information; and relaying an operation of the first harq process to a second harq process of a second cell which is different from the first cell, when a predetermined condition is satisfied..
05/01/14
20140119246
Systems and methods for carrier aggregation
A user equipment (ue) for performing carrier aggregation is described. The ue includes a processor and instructions stored in memory that is in electronic communication with the processor.
04/24/14
20140112294
Fractional harq re-transmission
Methods and apparatus are described for determining, via a hybrid automatic repeat request (harq) module, that a maximum number of retransmissions has been reached for a harq packet. The harq module may communicate an internal nack to a message retransmission module indicating a transmission failure.
04/24/14
20140112272
Method and apparatus for using channel output feedback in multi user wireless systems and hybrid-arq
A method and apparatus for transmitting and receiving a signal using a channel output feedback in a wireless communication system and hybrid-automatic repeat request (arq) are provided. The method and apparatus include a transmitter configured to transmit to a base station and a first packet on a precoder received from the base station.
04/24/14
20140112218
Method for implementing hybrid automatic repeat request, user equipment, and base station
Embodiments of the present invention provide a method for implementing hybrid automatic repeat request, a user equipment, and a base station. The method includes: determining first indication information and second indication information separately according to feedback information of each downlink subframe of a primary cell and that of a secondary cell that need to be sent in a same uplink subframe of the primary cell, where the first indication information is used to indicate first feedback information of each downlink subframe of the primary cell that needs to be sent in the uplink subframe, and the second indication information is used to indicate second feedback information of each downlink subframe of the secondary cell that needs to be sent in the uplink subframe; sending mapping information of the first indication information and the second indication information in the uplink subframe..
04/24/14
20140112217
Method and apparatus for communication in tdd system
Provided are a method and an apparatus for communication in a tdd (time division duplex) system. A terminal is notified of a change in a first ul-dl setup from a base station during a first change period and receives a second ul-dl setup updated during a second change period.
04/17/14
20140105324
Signal encoding method and device, method for encoding joint feedback signal
A signal encoding method and device and a method for encoding a joint feedback signal are provided. When two carriers are configured with multiple-input and multiple-output (mimo), hybrid automatic repeat request-acknowledgement (harq-ack) signals of the two carriers are combined into a joint feedback signal.
04/17/14
20140105191
Method of transmitting control information and device for same
The present invention relates to a wireless communication system. In more detail, a method for performing harq (hybrid automatic repeat request) retransmission by a communication device in a wireless communication system, the method comprising: initially transmitting a data block to a base station (bs); attempting pdcch (physical downlink control channel detection) in a predetermined time interval including a plurality of subframes after transmission of an uplink channel signal; and retransmitting the data block when a pdcch signal indicating retransmission of the data block is detected in the predetermined time interval, wherein reception of a phich (physical hybrid arq indicator channel) corresponding to initial transmission of the data block is skipped..
04/17/14
20140105088
System and method for transmitting and receiving acknowledgement information
A system and method for transmitting and receiving acknowledgement information are provided. A method for communications device operations includes determining a hybrid automatic repeat request (harq) response for each component carrier (cc) in a set of ccs configured by higher layer signaling, thereby producing a set of harq responses; generating an information vector from the set of harq responses, encoding the information vector; and transmitting the encoded information vector.
04/10/14
20140101508
Hybrid error-control algorithm
An embodiment of the invention includes an efficient error-control system and method for recovering packet losses, especially losses in distributing multicast video over broadband residential networks. Preferably, unlike most existing error-control algorithms designed for internet multicast, the system and method does not employ substantial feedback suppression.
04/10/14
20140098768
Uplink radio access network with uplink scheduling
A radio access network comprises a serving radio network controller (s-rnc). The s-rnc receives successfully received medium access control (mac) packet data units (pdus), discards duplicates of mac pdus, reorders the non-discarded mac pdus based on serial numbers of the mac pdus and delivers the mac pdus to a radio link control protocol layer.
04/10/14
20140098765
Wireless base station device using coordinated harq communication system, wireless terminal device, wireless communication system, and wireless communication method
A wireless communication system, includes a first wireless base station; a second wireless base station that performs a coordinated transmission; and a wireless terminal, wherein the wireless terminal includes a reception control unit that identifies a physical downlink channel transmitted from any of the first and second wireless base station according to one or more reference signals; a data reception unit that is capable of receiving data transmitted by the first wireless base station using a resource indicated by a first control channel and receiving data coordinately transmitted by the second wireless base station using a resource indicated by the received first control channel, a control channel transmission unit that transmits a second control channel and the reception control unit further controls hybrid automatic repeat request (harq) process for data coordinately transmitted by the first wireless base station and the second wireless base station based on the first control channel.. .
04/10/14
20140098719
Method and apparatus for performing harq process in wireless communication system
A method and an apparatus for performing hybrid automatic repeat request (harq) in a wireless communication system is provided. Ues that use the same application for d2d communications form a sharing group so that reliability of transmission of a physical uplink shared channel (pusch) and a physical uplink control channel (pucch) among terminals that perform the d2d communications is guaranteed.
04/03/14
20140092865
Transmission of uplink control information in inter-enb carrier aggregation
A user equipment (ue) for communication in a wireless network supporting inter-eutran node b (enb) carrier aggregation has a receiver to communicate with a first enb corresponding to a primary cell (pcell) in the wireless network and a second enb corresponding to a secondary cell (scell) in the wireless network. The receiver is configured to receive downlink data through a physical downlink shared channel (pdsch) in the scell.
04/03/14
20140092839
Method of providing harq feedback information
In a wireless communication system where a terminal and a base station communicate with each other using a frame including at least one downlink sub-frame and at least one uplink sub-frame, the terminal and the base station calculate the number of hybrid automatic repeat request (harq) feedback regions of the downlink sub-frames and the uplink sub-frames in accordance with a third value corresponding to an absolute value of subtraction between a first value corresponding to the number of downlink sub-frames of the frame and a second value corresponding to the number of uplink sub-frames of the frame or the sum of the first value and the second value and configure harq feedback regions in the downlink sub-frames and the uplink sub-frames.. .
04/03/14
20140092824
Hybrid automatic repeat request (harq) mapping for carrier aggregation (ca)
Technology for conditional hybrid automatic retransmission re-quest (harq) mapping for carrier aggregation (ca) is disclosed. One method can include a user equipment (ue) determining when a subframe for physical downlink shared channel (pdsch) transmission is configured for downlink semi-persistent scheduling (sps).
04/03/14
20140092789
Phich-less operation for uplink-downlink configuration zero
Various communication systems may benefit from techniques for handling inter-band carrier aggregation (ca). For example, systems of the third generation partnership project (3gpp) long term evolution (lte) advanced (lte-a) may benefit from a uplink (ul) downlink (dl) configuration zero handling, particularly in cases where there is no physical hybrid automatic repeat request (harq) indicator channel (phich).
04/03/14
20140092786
Hybrid automatic repeat request (harq) mapping for carrier aggregation (ca)
Technology to dynamically alter hybrid automatic retransmission re-quest (harq) mapping for carrier aggregation (ca) is disclosed. In an example, a user equipment (ue) operable to dynamically alter hybrid automatic retransmission re-quest (harq) mapping for carrier aggregation (ca) can include computer circuitry configured to: determine a secondary harq bundling window size for a secondary cell (scell), when a primary harq bundling window size for a primary cell (pcell) is zero; determine a physical uplink control channel (pucch) resource for transmission of a harq-acknowledge (ack) feedback using the secondary harq bundling window size; and transmit the harq-ack feedback in the pucch resource..
03/27/14
20140086175
Methods, apparatus and computer programs for controlling retransmissions of wireless signals
A wireless device operates in a wireless cellular network under control of a network control apparatus. The wireless device transmits a signal to the network control apparatus.
03/27/14
20140086112
Methods for dynamic tdd uplink/downlink configuration
A method and apparatus for time division duplex (tdd) operation in a wireless transmit/receive unit (wtru) are disclosed. The method includes receiving a first tdd uplink (ul)/downlink (dl) configuration for a serving cell, receiving a second tdd ul/dl configuration for the serving cell, receiving an indication of directions to use for subframes with conflicting directions between the first tdd ul/dl configuration and the second tdd ul/dl configuration, using the first tdd ul/dl configuration for timing of ul scheduling and ul hybrid automatic repeat request (harq), using the second tdd ul/dl configuration for timing of dl scheduling and dl harq, and determining a direction for each subframe with conflicting directions based on the received indication, wherein on a condition that the determined direction for a subframe with conflicting directions is dl, receiving in the subframe in the dl..
03/20/14
20140079039
Method and apparatus for assigning hybrid-automatic repeat request processes
A method and apparatus for transmitting enhanced uplink (eu) data is disclosed. Configuration parameters for eu operation are received, including a priority associated with each mac-d flow and a maximum number of h-arq transmissions associated with each mac-d flow.
03/20/14
20140079006
Wireless base station device using coordinated harq communication system, wireless terminal device, wireless communication system, and wireless communication method
A wireless communication system in which a plurality of base station devices perform a coordinated transmission to a wireless terminal device. Including transmitting a first control channel indicating new data or retransmission data from a first base station device; receiving the first control channel, by a wireless terminal device, and receiving at least one of data transmitted by the first base station device using a resource indicated by the received first control channel and data coordinately transmitted by a second base station device using a resource indicated by the received first control channel; transmitting, by the wireless terminal device, a second control channel related to a retransmission of the received data; controlling, by the wireless terminal device, hybrid automatic repeat request (harq) process for data coordinately transmitted by at least the first base station device and the second base station device based on the first control channel..
03/20/14
20140078981
Method and apparatus for hybrid automatic repeat request signaling
In one aspect, the teachings herein provide a system and method for reusing the pucch format 3 to address the new harq-ack feedback cases encountered in rel-11, where different ul/dl configurations are involved in the ca configuration of a ue, such as rel-11 interband tdd ca with different ul/dl configurations on different bands. The various embodiments illustrated by way of example in this disclosure enable reliable and efficient harq-ack feedback for rel-11 tdd ca without a substantial increase in specification and implementation complexity..
03/20/14
20140078944
Method for transmitting control information and apparatus therefor
The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting uplink control information in a wireless communication system that supports carrier aggregation and operates in a tdd system, and to an apparatus therefor.
03/20/14
20140078941
Method and device for executing harq in tdd-based wireless communication system
Provided are a method and a device for executing a hybrid automatic repeat request (harq) of a terminal in a time division duplex (tdd)-based wireless communication system. The method comprises the steps of: receiving an uplink grant for a first subframe of a second serving cell through a first serving cell; transmitting uplink data in the first subframe on the basis of the uplink grant; receiving an acknowledgement/not-acknowledgement (ack/nack) for the uplink data through the first serving cell; and, when the ack/nack signal is a nack, transmitting a retransmission data for the uplink data in a second subframe of the second serving cell..
03/13/14
20140071965
Method and system for supporting multiple hybrid automatic repeat request processes per transmission time interval
A method and apparatus may be used for supporting multiple hybrid automatic repeat request (h-arq) processes per transmission time interval (tti). A transmitter and a receiver may include a plurality of h-arq processes.
03/13/14
20140071926
Wireless base station device using coordinated harq communication system, wireless terminal device, wireless communication system, and wireless communication method
A first base station and a second base station perform a coordinated transmission process to a wireless terminal. The first base station includes a transmission unit that transmits to the wireless terminal a first control channel which indicates new data or retransmission data.
03/13/14
20140071894
Variable block length and superposition coding for hybrid automatic repeat request
An enb may retransmit packets according to a hybrid automatic repeat request using superposition coding. In one instance, the enb receives a negative-acknowledgement of an initially transmitted packet and retransmits at least one packet according to hybrid automatic repeat request using superposition coding in response to the negative-acknowledgement.
03/13/14
20140071868
Apparatuses and methods for managing pending harq retransmissions
Methods and systems present solutions to, for example, the problem of unnecessary preparedness for suspended retransmissions in the user equipment (ue) which contributes to power drain in the device battery. One method for monitoring a physical downlink control channel (pdcch) for adaptive retransmission grants in a radio communication system includes: monitoring, by a user equipment (ue), the pdcch for adaptive retransmission grants; receiving, by the ue, a hybrid automatic repeat request (harq) acknowledge (ack) message, and ceasing, by the ue, to monitor the pdcch for adaptive retransmission grants after receipt of the harq ack message..
03/06/14
20140068396
Memory management method and apparatus for receiving multi channel hybrid automatic repeat request (harq) packet
A memory management method for receiving a multi channel hybrid automatic repeat request (harq) packet may enable smooth communication and reduce costs by maintaining a small memory size of a receiver in a communication system using a harq including a plurality of channels.. .
03/06/14
20140064242
Multiplexing control and data information from a user equipment in mimo transmission mode
A method and apparatus are provided for multiplexing uplink control information (uci) with data information in a physical uplink shared channel (pusch) transmitted over multiple spatial layers where aspects of the uci multiplexing include the determination of the number of coded uci symbols in each spatial layer when the data information is conveyed using multiple transport blocks (tbs), the determination of the number of coded uci symbols in each spatial layer when the pusch conveys a single tb retransmission for a hybrid automatic repeat request (harq) process while the initial tb transmission for the same harq process was in a pusch conveying multiple tbs, and the determination of the modulation scheme for the coded uci symbols.. .
03/06/14
20140064159
Method and apparatus for hybrid automatic repeat request signaling
In one aspect, the teachings herein provide a method and apparatus for extending certain harq feedback procedures introduced in lte rel-10, which were defined for ca configurations involving tdd serving cells of the same ul/dl configuration, to the new, more complex ca configurations introduced in rel-11, which involve the aggregation of interband tdd serving cells with differing ul/dl configurations. Such reuse enables reliant and efficient harq feedback signaling in lte rel-11, without substantially increasing the specification or implementation complexity of harq feedback signaling in lte rel-11, despite the decidedly more complex ca configurations introduced in lte rel-11..


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Automatic Repeat Request topics: Automatic Repeat Request, Communication System, Carrier Aggregation, Communications, High Speed, Access Control, Sounding Reference Signal, Transmission Time Interval, Modulation, High Speed Packet Access, Quality Of Service, Allocation, Code Division Multiple Access, Error Correction, Transmitter

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