|| List of recent Downlink-related patents
| Methods and apparatus for dltpc rejection in downlink windup mode|
Disclosed are methods and apparatus for rejecting unreliable downlink (dl) transmit power control (tpc) commands in windup mode. In one aspect, the method includes receiving by a user equipment (ue) a plurality of dltpc commands from a base station, analyzing on one or more transmitted uplink (ul) tpc commands, detecting a windup mode based on the one or more dltpc and ultpc commands, and rejecting one or more dltpc down commands in the windup mode..
| Methods and apparatus for sire-based ultpc rejection|
Disclosed are methods and apparatus for rejecting unreliable downlink (dl) transmit power control (tpc) commands based on signal-to-interference-ratio estimates (sire). The method includes receiving by a user equipment (ue) a dl transmit power control (tpc) command from a base station; calculating a signal-to-interference ratio estimate (sire) for the dl channel; determining a scaling factor for a dltpc rejection threshold based on the dl channel sire; adjusting the dltpc rejection threshold based on the determined scaling factor; and rejecting or accepting the dltpc command based on the adjusted dltpc rejection threshold..
| Link adaptation resumption based on cqi offset|
Methods, apparatuses and computer readable media are described that adjust signaling messages that include channel quality metrics communicated between a mobile wireless device and a wireless access network before and/or after interruption of a connection to improve downlink performance after resumption of the connection. One or more adjusted channel quality metrics are determined and communicated to the wireless access network to compensate at least in part for an estimate of communication channel performance degradation by a network element of the wireless access network following the interruption and resumption of the connection between the mobile wireless device and the wireless access network..
| Apparatus and method for controlling wireless downlink and uplink transmission|
Apparatus and method for communication are provided. The method includes controlling transmission to user equipment in downlink direction by monitoring the amount of data to be transmitted to the user equipment and monitoring the time elapsed since the previous downlink transmission of the user equipment and allowing data transmission only when either result of monitoring exceeds a predetermined threshold; and controlling transmission from user equipment in uplink direction by allowing the user equipment to start uplink transmission only when a given predetermined time interval has elapsed since the previous uplink transmission from the user equipment.
| Communication system, method and device|
A communication system and method are provided. The communication system includes a master base station, a slave base station and a remote radio unit (rru); where a cell controlled by the slave base station is included in cells controlled by the master base station.
| Mobile communication method and radio base station|
A mobile communication method according to the present invention includes a process of transmitting information regarding a pcell#1 and a scell#1 connected by a mobile station ue in control of a radio base station enb#2 to a radio base station enb#3 from the radio base station enb#2 when the mobile station ue that is performing ca communication executes handover from the control of the radio base station enb#2 to the control of a radio base station enb#3 in at least one of an uplink or a downlink.. .
| Cell update for optimized system access procedures between base station subsystems and mobile stations|
One embodiment is directed to a method implemented by a mobile station for establishing a downlink temporary block flow (tbf) from a base station subsystem (bss). Cell re-selection is performed while a ready timer of the mobile station has not expired.
| Method for coding and transmitting uplink control information in a wireless access system|
The present invention relates to a method for transmitting channel quality control information using two transmission blocks in a wireless access system that supports hybrid automatic retransmit request (harq). The method for transmitting channel quality control information according to one embodiment of the present invention comprises: a step in which a terminal receives a physical downlink control channel (pdcch) signal including downlink control information (dci); a step of calculating, using the dci, the number (q′) of encoded symbols required for transmitting channel quality control information; and a step of transmitting the channel quality control information via the physical downlink control channel (pdcch) based on the number of encoded symbols..
| Method of transmitting control information in a wireless communication system and apparatus thereof|
A method and apparatus for transmitting control information in a wireless communication system supporting carrier aggregation (ca) is disclosed. A method for transmitting control information to a base station (bs) by a user equipment (ue) in a wireless communication system includes receiving at least one of a physical downlink control channel (pdcch) and a physical downlink shared channel (pdsch) from the base station through at least one serving cell configured in the user equipment, and transmitting control information regarding pdcch reception or pdsch reception indicated by the pdcch to the base station.
| Radio base station apparatus, terminal and radio communication method|
The present invention is designed to provide a radio base station apparatus which can acquire csi reports at appropriate times, and which can trigger csi reports effectively. The radio base station apparatus of the present invention has: a pdcch signal generating section (211) that generates a downlink allocation signal for receiving and decoding downlink transmission data, the downlink allocation signal including a report request bit for triggering reporting of channel information aperiodically; a transmission section that transmits a downlink signal including a downlink control channel where the downlink allocation signal is mapped; and a receiving section that receives an uplink signal which includes the reporting of channel information from a terminal triggered by the report request bit, via the uplink..
| Micro base station, user terminal and radio communication method|
The present invention is designed to reduce interference from a macro base station to a small transmission power node. The present invention is characterized in providing a micro base station which forms, in a macro cell where a macro base station transmits a signal to a macro terminal, a micro cell where the micro base station transmits a signal to a micro terminal under control with low power, and this micro base station generates a pdcch which includes downlink or uplink resource allocation information, and, in a non-transmission period in which the macro base station stops transmitting signals while leaving minimal quality measurement signals, shifts the transmission starting symbol of the pdcch to a position where the pdcch does not overlap the quality measurement signals..
| Method and apparatus for transmitting uplink control information in a wireless communication system|
The present invention relates to a method and apparatus for transmitting uplink control information (uci) in a carrier aggregation system wherein a plurality of serving cells is aggregated. The method comprises the steps of: receiving a downlink signal through at least one of the serving cells; generating first uci and second uci responding to the downlink signal; transmitting the first uci through a first serving cell; and transmitting the second uci through a second serving cell.
| Method and apparatus for sending uplink/downlink scheduling information, and method and apparatus for receiving uplink/downlink scheduling information|
The present invention provides a method and an apparatus for sending uplink/downlink scheduling information, and a method and an apparatus for receiving uplink/downlink scheduling information. The method for sending downlink scheduling information includes: determining, in downlink subframes on a second carrier, a first downlink subframe, in which at time corresponding to the first downlink subframe, a subframe on a first carrier is an uplink subframe; and sending, on a fifth downlink subframe on the first carrier, downlink scheduling information corresponding to the first downlink subframe on the second carrier to a terminal, in which time corresponding to the fifth downlink subframe is before the time corresponding to the first downlink subframe.
| Interference control for heterogeneous networks|
A wireless communication network may include multiple cells for communicating with a wtru. One cell may be a macrocell, while another may be a small cell, such as a picocell or a femtocell.
| Transmission method and apparatus in a wireless communication system|
A transmission method and apparatus are provided for use in a wireless communication system in which a cell includes a plurality of sub-cells. A transmission point (tp) in the wireless communication system includes a transmitter configured to transmit a signal to each of the plurality of sub-cells through a plurality of antennas; a receiver configured to receive uplink control information from a user equipment (ue) located within at least one of the plurality of sub-cells; and a controller configured to determine a virtual matrix for each of the plurality of sub-cells, to select a precoding matrix according to the virtual matrices of the plurality of sub-cells, to determine a cooperative transmission mode or a normal transmission mode, based on the received uplink control information, and to control the transmitter to perform downlink transmission on a sub-cell basis through the virtual matrices of the sub-cells according to the determined transmission mode..
| Apparatus and method for performing network entry procedure in cloud cell communication system|
A method for performing a network entry procedure by a mobile station (ms) in a cloud cell communication system is provided. The method includes determining whether there is an arbitrary cloud cell member candidate base station (bs) as a cloud cell member candidate bs which has transmitted a downlink synchronization signal with a signal strength, if there is the arbitrary cloud cell member candidate bs, determining the arbitrary cloud cell member candidate bs as a final cloud cell member candidate bs which will perform a cooperative communication with the master bs, transmitting an access request message including information on the final cloud cell member candidate bs to the master bs, and receiving an access response message including information on a cloud cell member bs from the master bs..
| Method and mobile communications device utilizing the same|
Embodiments of a method and a mobile communications device utilizing the same are provided. The method is implemented in a mobile communications device, including retrieving a first data from a tpc field of a slot of a radio frame from a downlink dedicated physical channel (dl dpch), decoding an uplink tpc command based on the first data, and estimating a signal quality based on the first data..
| Method and apparatus for efficient feedback in wireless communication system supporting multiple antennas|
The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for efficient feedback in a wireless communication system that supports multiple antennas. According to one embodiment of the present invention, a method for transmitting channel status information, csi, for a downlink transmission through uplink comprises: generating a rank indicator (ri), a first precoding matrix indicator (pmi), a second pmi anc channel quality indicator (cqi) as the csi for the downlink transmission; and transmitting at least one of the ri, the first pmi, the second pmi and the cqi according to a predetermined order, wherein, when the ri or the first pmi is dropped, the csi following the dropped csi is generated based on a ri or a first pmi transmitted previously, wherein a precoding matrix used for the downlink transmission is determined based on a combination of the first pmi and the second pmi..
| Hybrid automatic repeat request (harq) mapping for carrier aggregation (ca)|
Technology to support mapping for hybrid automatic retransmission re-quest (harq) for carrier aggregation (ca) is disclosed. One method can include a user equipment (ue) identifying, within a radio frame, a type 2 downlink (dl) sub-frame within a virtual bundling window associated with a secondary component carrier (scc).
| Hybrid automatic repeat request (harq) mapping for carrier aggregation (ca)|
Technology to support hybrid automatic retransmission re-quest (harq) for carrier aggregation (ca) is disclosed. For example, a device, at a processor residing on a user equipment (ue), includes a sizing module and a window module.
| Method and apparatus for transmitting uplink control information in a wireless communication system|
The present invention relates to a method for a terminal, in which a plurality of serving cells is established, to transmit uplink control information in a wireless communication system. The method comprises the following steps: receiving at least one physical downlink control channel (pdcch) in a first subframe via a first serving cell from among the plurality of serving cells in a first subframe; receiving at least one physical downlink shared channel (pdsch) via at least one serving cell from among the plurality of serving cells in the first subframe based on said at least on pdcch; and transmitting, in a second subframe, an acknowledgement/non-acknowledgement (ack/nack) which indicates whether or not a decoding for said at least one pdsch has succeeded.
| Pucch resource allocation with enhanced pdcch|
Embodiments of the present disclosure include methods, apparatuses, and instructions for receiving at a user equipment (ue) of a third generation partnership project (3gpp) network an offset value selected from a plurality of offset values in downlink control information. The ue also receives one or more enhanced control channel elements (ecces) of an enhanced physical downlink control channel (epdcch).
| Uplink downlink resource partitions in access point design|
A method, an apparatus, and a computer program product for wireless communication are provided in which information indicating a partitioning between uplink and downlink resources is received, and communication with an access point to determine at least one of whether a downlink resource will be used for uplink or whether an uplink resource will be used for downlink is performed. Accordingly, a synchronous network may be provided where partitioning of uplink-downlink resources may be dynamically selected, which is more efficient than a synchronous network where uplink-downlink resource partitioning is global and semi-static..
| Method and apparatus for bit-level pdsch muting and/or receiver puncturing in lte-advanced heterogeneous networks|
A base station (bs) comprises: an interface to receive radio resource management (rrm) measurement from user equipment on received reference signal (rs) strength for each bs of one or more other bss in a surrounding area of the user equipment; an x2 interface to receive transmission information of almost blank subframes and corresponding cell-specific reference signal (crs) resource element (re) locations from the one or more other bss; and a controller to manage bit-level pdsch (physical downlink shared channel) muting information, which includes identifying pdsch resource elements (res) that suffer the most from crs interference arising from other bss and that are to be subjected to bit-level muting, and allocating to the identified res a number of bits less than the number of bits allocated to normal res, and to transfer data with the two levels of bit allocations to various pdsch res to the user equipment.. .
| Method and device for transmitting reception confirmation in wireless communication system|
According to one embodiment, a method for transmitting acknowledgement/not-acknowledgement (ack/nack) of a user equipment in a wireless communication system. Includes: receiving uplink-downlink (ul-dl) configuration 5 information on a plurality of subframes; receiving data in at least one subframe among the plurality of subframes; configuring ack/nack for the received data; and transmitting the ack/nack through a ul subframe..
| Harq buffer size reduction in wireless systems for downlink shared channels|
A receiver arranged to process a flow of data in a communication system for downlink shared channels and a method for processing the flow of data sequence. The receiver includes a processor that receives a subframe comprising a data packet; a demapper that receives supplemental channel data symbols and is positioned after the processor in a sequence of the flow of data; means for performing rate matching of estimated the data symbols and positioned after the demapper in the data sequence; and a hybrid automatic retransmission request (harq) buffer positioned before the demapper in the data sequence.
| Method for setting search space for handover of relay node in wireless communication system, and device therefor|
Disclosed in the present invention is a method for a relay to execute a random access procedure in a wireless communication system. More particularly, the present invention comprises the steps of: transmitting a random access preamble to a target cell; receiving a downlink signal from the target cell; obtaining a relay node-physical downlink control channel (r-pdcch) by blind decoding the downlink signal; and receiving a random access response message on the basis of the r-pdcch, wherein a search space for the blind decoding is located in a data region of a subframe, and information on the search space is delivered from the target cell to a serving cell of the relay node, and then signaled to the relay node..
| Method and device for avoiding inter-cell interference in a wireless access system|
According to the present invention, a method for a relay node (rn) to reallocate a resource in order to avoid inter-cell interference (ici) in a wireless access system includes: overhearing a control channel including downlink or uplink resource allocation information transmitted by a plurality of base stations to terminals in the coverage area of each base station; sharing the rn by means of the plurality of base stations; confirming that there is a resource area in which conflicts are occurring by comparing resource areas allocated to terminals in the coverage area of the rn through the control channel; and, if it is determined, on the basis of the confirmation result, that there is a resource area in which conflicts are occurring, reallocating a resource to the resource area in which conflicts are occurring.. .
| Method and system for providing service from tdd cell to terminal|
The disclosure discloses a method for providing a service from a time division duplex (tdd) cell to a terminal, which includes: configuring a cell of which frequency bands can interfere a frequency division duplex (fdd) uplink frequency band and a cell of which frequency bands can interfere an fdd downlink frequency band in cells provided by an enb as an uplink cell only for transmitting uplink data and a downlink cell only for transmitting downlink data respectively on an enb of a tdd system in advance, and storing configuration information of the uplink and downlink cells in the enb; transmitting the configuration information of the uplink and downlink cells to a ue by the enb; receiving, by the ue, the configuration information of the uplink and downlink cells, and transmitting data with the enb by at least one of the uplink and downlink cells. The disclosure further discloses a system for providing a service from a tdd cell to a terminal, so as to not only avoid interference between the frequency bands of the fdd and tdd systems and implement coexistence of the fdd and tdd systems, but also fully utilize spectrum resources, ensure the high utilization rate of the spectrum resources and save resources..
| Method and apparatus for processing baseband uplink and downlink sub-frames|
By serial processing of the uplink and downlink sub-frames according to the present invention, more abundant processing time may be obtained. In other words, the baseband processor can operate at a lower speed, thus reducing an idle rate of the baseband processor and improving a resource utilization of the processor..
| Transmission method and reception method for downlink signal, user equipment, and base station|
The present invention provides a dl grant transmission/reception measure for a cross-cc scheduling, when cells operating in different tdd dl-ul configurations from each other are merged. In addition, the present invention provides a measure for transmitting/receiving uplink ack/nack information for dl data transmitted according the dl grant..
| Macro-femto inter-cell interference mitigation|
A method, system, and apparatus is provided for interference calibration. A second mobile terminal may be configured to send timing information to a network interface in an uplink channel of a second communication system.
| Uplink channel sounding and channel state information estimation in mobile communication systems with multiple antennas|
A system includes a base station configured to communicate with a plurality of mobile stations. The base station transmits downlink timing synchronization and establishes frequency synchronization with at least one of the plurality of mobile stations.
| Measurement of nodes in coordinated multipoint (comp) systems|
Technology for enabling radio resource management (rrm) measurements in coordinated multi-point (comp) transmission and reception is disclosed. One method comprises sending, from an evolved node b (enb) to a user equipment (ue), an information element (ie) containing a list of measurement objects that define configurations of channel state information reference signal (csi-rs) based rrm measurements.
| Method and apparatus for automatic gain control in a td-lte system|
This invention describes method and apparatus for automatic gain control (agc) for a td-lte system, taking into consideration the td-lte frame structure. In one embodiment, an agc method comprises: adjusting rf gain for subframe j (where 0<=j<=9) in a radio frame according to an average peak signal power of subframe j in previous radio frames when a terminal is lack of information in downlink timing and in uplink/downlink configuration; computing a first average signal power in one or more downlink subframes as received from at least one base station when the terminal has information in downlink timing but is lack of information in uplink/downlink configuration; and computing a second average signal power in one or more downlink subframes as received from at least one base station when the terminal has information in downlink timing and in uplink/downlink configuration..
| Adaptive ul-dl configurations in a tdd heterogeneous network|
Technology for traffic offloading to generate a low interference flexible subframe (flexsf) of an adaptive uplink-downlink (ul-dl) time-division duplexing (tdd) subframe configuration in a heterogeneous network (hetnet) is disclosed. One method can include an evolved node b (enb) monitoring a traffic loading metric for a specified traffic loading condition.