|| List of recent Downlink-related patents
|Interference processing method and device|
Embodiments of the present invention provide an interference processing method and device. A user equipment receives a notification message sent by a network side.
|Mobile station apparatus, control apparatus, base station apparatus, method implemented therein, and computer readable medium|
A mobile station apparatus (400) is configured to receive a broadcast message broadcasted from a radio communication network (10) in a downlink physical channel to be received by a plurality of mobile stations in a standby state (e.g., rrc_idle state, cell_pch state, or ura_pch state). Further, the mobile station (400) is configured to send a confirmation response indicating a reception status of the broadcast message to the radio communication network (10) while remaining in the standby state without changing to a communication state (e.g., rrc_connected state or cell_dch state) in which user data can be transmitted and received.
|Hybrid interference alignment for mixed macro-femto base station downlink|
A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus is a first bs.
|Operation of a heterogeneous wireless network by determining location of a wireless device|
A heterogeneous wireless communication network includes a macrocell base station that one or more low power nodes. The location of a wireless device is estimated based on feedback reports received from the wireless device in response to downlink transmissions of a reference signal.
|Handling uplink power limited scenarios|
A method for reducing power consumption by a wireless communication device is disclosed. The method can include the wireless communication device determining that the device is experiencing an uplink power limited condition.
|System and methods for mitigating receiver desense caused by simultaneous transmission on multi-sim wireless communications devices|
Methods are provided that enable mitigation of desense from a transmission on a first radio frequency (rf) resource associated with a first sim to a receiver circuit of a second rf resource associated with a second sim in the same device. A multi-sim wireless device, such as a dual-sim dual active (dsda) device, may utilize characteristics of uplink and downlink signals to determine an optimal action that reduces interference from conflicting signals.
|Method, controller, and system for tunnel communication|
A communication system for allowing personnel in a tunnel below ground to communicate with a location above ground includes a controller disposed below ground in the tunnel. The system includes an uplink portion that sends uplink messages from the controller below ground in the tunnel through earth to above ground.
|Method and apparatus for transmitting downlink reference signal in wireless communication system that supports multiple antennas|
The present invention relates to a wireless communication system, and in particular, to a method and an apparatus for transmitting a downlink reference signal in a wireless communication system that supports multiple antennas. The method for transmitting a reference signal for a maximum of eight antenna ports according to one embodiment of the present invention comprises: in a base station, mapping part of a common reference signal for a maximum of four antenna ports into a downlink subframe that includes a 1st slot and a 2nd slot; in the base station, mapping a channel status information reference signal for the maximum of eight antenna ports into the downlink subframe, according to a preset pattern; and in the base station, transmitting the downlink subframe into which the common reference signal and the channel status information reference signal have been mapped, wherein the preset pattern defines the channel status information reference signal for the maximum of eight antenna ports to be mapped onto two ofdm symbols of the data region in the downlink subframe, and wherein part of the common reference signal for the maximum of four antenna ports is limited to the common reference signal for a maximum of two antenna ports..
|Method and apparatus for generating and processing mac-ehs protocol data units|
A network device and wireless transmit/receive unit (wtru) using an enhanced high speed medium access control (mac-ehs) are disclosed. A network device may provide a mac-ehs reordering protocol data unit (pdu) with a segment of a service data unit (sdu).
|Synchronization signal design for wireless devices in a long range extension mode|
Systems and methods related to a synchronization signal particularly well suited for wireless devices in an extended coverage area of a cell of a cellular communications network are disclosed. In one embodiment, a base station transmits a synchronization signal including multiple repetitions of a basic synchronization block during a coherence time of a downlink channel over which the synchronization signal is transmitted.
|Reuse of rf receive chain for hand-in assistance|
A radio frequency receive chain of an access point is reused for different functions. For example, the same rf receive chain may be used to receive on a downlink at certain points in time and on an uplink at other points in time.
|Mobile telecommunications architecture|
A mobile telecommunications architecture is disclosed. A downlink mobile telecommunications signaling message is received via a first communication interface associated with a single shared network controller connection to a mobile switching center (msc) server.
|Method of handling communication operations and related communication device|
A method of handling a communication operation for a communication device configured with a first cell comprises the steps of performing a first communication operation in a subframe via the first cell, if a direction of the subframe determined according to a uplink (ul)/downlink (dl) configuration of the first cell and a direction of the subframe determined according to a reference ul/dl configuration are the same; and stopping the first communication operation in the subframe via the first cell, if the direction of the subframe determined according to the ul/dl configuration of the first cell and the direction of the subframe determined according to the reference ul/dl configuration are the different.. .
|Method and apparatus for performing random access in wireless communication system|
Provided are a method and an apparatus for performing random access in a wireless communication system. A terminal receives from a base station a physical downlink control channel (pdcch) indication, which indicates an initiation of the random access with respect to a secondary cell (scell), based on whether a cross-carrier scheduling is supported by the scell; transmits a physical random access channel (prach) preamble to the base station through the scell; and transmits a rach response as a response to the prach preamble, based on whether the scell supports the cross-carrier scheduling, wherein the scell and a primary cell (pcell) comprises a carrier aggregation (ca) system, the pcell is a cell from which the terminal performs radio resource control (rrc) connection with the base station, and wherein the scell is at least one cell from residual cells in the carrier aggregation excluding the pcell..
|Communication system, base station apparatus, mobile station apparatus, and communication method|
Provided are a communication system, a base station apparatus, a mobile station apparatus, and a communication method for reducing interference between uncoordinated adjacent cells. The communication system of the present invention comprises a base station apparatus and a mobile station apparatus.
|Method and apparatus for data-splitting transmission from multiple sites|
Methods and apparatus for changing cell range coverage are disclosed. The coverage may be changed on a per-sub-frame basis.
|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.
|Apparatus and method for a communication system|
Apparatus and method for communication are provided. The solution includes controlling the communication of a transceiver on shared data channels using a data channel slot including a sensing period and a data period and controlling a transceiver to communicate on common and dedicated control channels on a shared spectrum using control channel slots, each control channel slot including a downlink part and an uplink part, wherein the uplink part occurs at the same time as the sensing period of a data channel slot..
|Systems and methods for dynamically configuring a flexible subframe|
A user equipment (ue) for dynamically configuring a flexible subframe is described. The ue includes a processor and instructions stored in memory that is in electronic communication with the processor.
|Controlling random access failure on a secondary cell|
A method in a base station for controlling a random access, ra, procedure is provided. The base station initiates (201) an ra procedure on a secondary cell, scell, in a user equipment, ue, by sending to the ue a physical downlink control channel, pdcch, order for a ra procedure on the scell.
|Antenna port management for localized enhanced physical downlink control channel transmissions|
Methods, systems, and devices are described for managing wireless communications. A first decoding candidate and a second decoding candidate are identified from a plurality of decoding candidates for a localized enhanced physical downlink control channel (epdcch) transmission.
|Apparatus and method for discontinuous receive in communication systems with large number of antennas|
A user equipment (ue) performs a method for supporting discontinuous receive (drx) in a wireless network. The method includes waking up at a wake up time associated with a beginning of a drx cycle, the drx cycle comprising a plurality of subframes.
|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..
|Method and apparatus for performing effective feedback in wireless communication system supporting multiple antennas|
A method for transmitting channel status information (csi) of downlink multi-carrier transmission includes generating the csi including at least one of a rank indicator (ri), a first precoding matrix index (pmi), a second pmi and a channel quality indicator (cqi) for one or more downlink carriers, the cqi being calculated based on precoding information determined by a combination of the first and second pmis, determining, when two or more csis collide with one another in one uplink subframe of one uplink carrier, a csi to be transmitted on the basis of priority, and transmitting the determined csi over a uplink channel. If a csi including an ri or a wideband first pmi collides with a csi including a wideband cqi or a subband cqi, the csi including a wideband cqi or a subband cqi has low priority and is dropped..
|Methods of radio communications using different subframe configurations and related radio and/or network nodes|
A method may be provided in a radio node capable of operating in a radio access network according to at least first and second uplink/downlink subframe configurations that are different. The first uplink/downlink subframe configuration and the second uplink/downlink subframe configuration may be used for operation in a first cell and a second cell respectively, and/or the first uplink/downlink subframe configuration and the second uplink/downlink subframe configuration may be used in the first cell or the second cell at non-overlapping times.
|Channel state information-reference signal patterns for time division duplex systems in long term evolution wireless networks|
A user equipment (ue) for time division duplex (tdd) communication through a wireless communication channel has a receiver to receive a channel state information reference signal (csi-rs) subframe configuration value, a csi-rs configuration value, and a csi-rs; and circuitry to determine a subframe index corresponding to a temporal position of a special subframe including the csi-rs; determine a csi-rs pattern of one or more orthogonal frequency division modulation (ofdm) resource elements carrying the csi-rs, the pattern being from among a group of csi-rs patterns that include of dm resource elements in ofdm symbols corresponding to a physical downlink control channel (pdcch) region of a legacy lte wireless communication channel; control the receiver to receive the special subframe carrying the csi-rs during the temporal position and at the one or more ofdm resource elements of the csi-rs pattern; and measure the wireless communication channel based on the csi-rs.. .
|System and method for discontinuous reception control start time|
Methods of combining semi-persistent resource allocation and dynamic resource allocation are provided. Packets, such as voip packets, are transmitted on the uplink and downlink using respective semi-persistent resources.
|Methods and system for resource management in tti (transmission time interval) bundling for improved phase continuity|
Certain aspects of the present disclosure propose methods for improving phase continuity in an uplink transmit time interval (tti) bundle. A first method may include identifying a segment of ul subframes in the tti bundle and maintaining substantially the same transmit power/timing/frequency when transmitting data to a node over the segment of ul subframes in the tti bundle.
|Channel traffic congestion avoidance in a mobile communication system|
A mobile station detects whether there is congestion in a cell by monitoring a first channel fix downlink messages and decoding the messages to see if the decoded messages indicate congestion, where the first channel is a common control channel (ccch). For the case in which the mobile station determines from the decoded messages that there is no congestion, the mobile station initiates a random access procedure by transmitting a request message uplink on a random access channel (rach).
|Uplink power control using received reference signal|
A user equipment (ue) includes circuitry configured to receive control information on a downlink control channel from a base station. The control information indicates an allocation of an uplink channel and the control information is sent in response to the base station determining that the ue is to send an adaptive modulation and coding report.
|System and method for calibration of a distributed amplifier system|
A system and method in a distributed amplifier system for correcting for rf losses between head end and coverage nodes by measuring rf losses in both directions; generating gains for amplifiers in both the head ends and coverage nodes; generating maximum output power limits; and adjusting the generated gains and output power limits based on downlink signal strength of cellular signals at a donor antenna.. .
|Methods and apparatus for efficient co-existence of macro and small cells|
A femto base station (bs) maintains two different timings: a femto bs downlink timing and a femto bs uplink timing. A femto base station's uplink reference timing is based on the macro uplink timing being used by one or more ue devices in the local vicinity of the femto bs.
|Method and apparatus for use in a mobile communication network|
There is provided a method of operating a network node in a communication network, the communication network comprising a mobile device, a first base station and a second base station, the first base station having a lower transmission power than the second base station and being located within the coverage area of the second base station, the mobile device being located within an imbalanced region between the first base station and the second base station and being served by the first base station, the method in the network node comprising configuring the mobile device, the first base station and the second base station such that the mobile device transmits uplink data to the first base station, and the mobile device receives downlink data only from the second base station. Corresponding methods are provided for operating a mobile device and a second base station.
|Method and arrangement in a communication system|
The present invention relates to a method and an arrangement for reducing a state transition time from a power saving state for a user equipment (18) in a communication network. The state transition time is reduced by retaining in the user equipment (18) one or more information parameter, such as the radio network temporary identifier for a high speed downlink shared channel (h-rnti), when performing a state transition to said power saving state so as to enable a time reduction when said user equipment switches back from said power saving state..
|Methods for testing receiver sensitivity of wireless electronic devices|
A test system may include test equipment for testing the radio-frequency performance of wireless electronic devices. The test equipment may provide radio-frequency downlink signals to a wireless electronic device under test (dut).
|Signal transmission method, signal receiving method, passive optical network pon device, and pon system|
Embodiments of the present disclosure relate to a signal transmission method the signal receiving method includes: receiving a first transmit signal, where the first transmit signal includes a first polarized optical signal and a second polarized optical signal that are perpendicular to each other, where the first polarized optical signal is loaded with first data, the first transmit signal is an uplink signal, and the first data is uplink data, or, the first transmit signal is a downlink signal, and the first data is downlink data; splitting the first transmit signal into a first signal and a second signal according to power; separately rotating a first polarized optical signal and a second polarized optical signal of the second signal by 90 degrees; and performing coherent mixing on the rotated second signal and the first signal to obtain the first data.. .
|Method and apparatus for reporting downlink channel state|
A method of reporting a channel state to a base station supporting downlink multiple input multiple output in a wireless communication system includes measuring a downlink channel based on a downlink signal received from the base station, and reporting a codebook index for precoding of the downlink signal according to the measurement of the downlink channel. The codebook for precoding includes an improved codebook (hereinafter, referred to as an improved 4tx codebook) having a dual structure composed of a codebook for wideband and a codebook for subband, for 4 transmit (4tx) antenna ports, and the improved 4tx codebook includes sub-codebooks obtained by sub-sampling the codebook for subband according to priority..
|Multi-user mimo-sdma for finite rate feedback systems|
A multi-user mimo downlink beamforming system with limited feedback (200) is provided to enable precoding for multi-stream transmission, where a channel codeword (ui) and one or more channel quality indicator values (cqia, cqib) are computed at the user equipment (201.i) on the basis of maximizing a predetermined sinr performance metric (pi) which estimates file receive signal-to-noise-ratio (sinr) at the user equipment (201.i). The computed codeword (ui) and cqi values (or differential values related thereto) are quantized and fed back to help the base station (210) which applies a correction to the appropriate cqi value in the course of designing the transmit beamforming vectors w and determining the appropriate modulation and coding level to be used for downlink data transmission..
|System, a device and a method for adjusting output power in a distributed amplifier system|
A system comprises a first device and a second device. The first device comprises a receiver, a spectrum analyzer, a controller, an amplifier, a filter and a transmitter.
|Method and apparatus for triggering a ranked transmission|
A method and apparatus are provided for providing improved spectrum efficiency by triggering a ranked transmission. In this regard, a method is provided that includes causing a configuration message to be transmitted to a mobile terminal, wherein the configuration message provides interpretation information for a frequency hopping flag bit.
|Transmission of information in a wireless communication system|
Methods, devices, and systems for the transmission of information in a wireless communication system are disclosed. In one embodiment, a method for the transmission of information in a wireless communication system comprises receiving a downlink message, wherein the downlink message includes a first control channel element; determining a first index using the location of the first control channel element; determining a second index; determining a first orthogonal resource using the first index; determining a second orthogonal resource using the second index; spreading an uplink message using the first orthogonal resource to form a first spread signal; spreading the uplink message using a second orthogonal resource to form a second spread signal; transmitting the first spread signal using a first antenna; and transmitting the second spread signal using a second antenna..
|Multi-radio controller and methods for preventing interference between co-located transceivers|
Embodiments of a multi-radio controller and methods for preventing interference between co-located transceivers are generally described herein. In some embodiments, the multi-radio controller operates within a multi-radio device and is configured to cause a wireless local area network (wlan) transceiver to transmit a triggering frame after an active period of a wireless wide-area network (wwan) transceiver.
|Dm rs based lte downlink physical layer|
It is provided an apparatus, including synchronizing means adapted to synchronize with a cell of a cellular communication system based on a synchronization signal and to obtain a cell identification of the cell; receiving means adapted to receive a symbol only on one or more subcarriers and subframes which carry at least one symbol of a physical broadcast channel; first obtaining means adapted to obtain a common demodulation reference symbol based on the cell identification and the received symbol; demodulating means adapted to demodulate a signal received on the physical broadcast channel based on the common demodulation reference symbol; user equipment means adapted to provide a user equipment functionality of the communication system.. .
|Interference cancellation method and apparatus for enhanced physical downlink control channel|
Embodiments of the present invention provide an interference cancellation method for an enhanced physical downlink control channel e-pdcch, comprising steps of: (1) allocating different orthogonal covering code occ sequences to different cells and/or different users; and (2) combining a plurality of control channel elements cces constituting one pdcch with a cell-specific occ sequence and/or a user-specific occ sequence respectively, so as to enable a user equipment to cancel interference on the pdcch.. .
|Methods and nodes in a wireless communication system|
Methods and nodes, for communication of a receiver-specific control channel signal within a wireless communication system, to be received by a receiver, wherein receiver-specific downlink control channel signals are scheduled for transmission over sets of physical resource block pairs.. .
|System and method for small traffic transmissions|
A grant-free transmission mode may be used to communicate small traffic transmissions to reduce overhead and latency. The grant-free transmission mode may be used in downlink and uplink data channels of a wireless network.
|Method of indicating a control channel in a wireless access system, base station for the same and user equipment for the same|
Disclosed are a method of transmitting a control channel in a wireless access system and a base station for the same. In transmitting a control channel of a 1st base station in a wireless communication system, the present invention includes receiving e-pdcch (enhanced-physical downlink control channel) including a downlink scheduling information in a data region from a 2nd base station, assigning e-pdcch including a downlink scheduling information of the 1st base station to the data region based on the downlink scheduling information received from the 2nd base station, and transmitting the downlink scheduling information of the 1st base station to the 2nd base station..
|Method and device for acquiring resource for uplink control channel in wireless communication system|
Provided are a method and device for acquiring a pucch (physical uplink control channel) resource index in a wireless communication system. A terminal acquires a pucch resource index indicating a dynamic pucch region corresponding to an e-pdcch (enhanced physical downlink control channel).
|Method for transmitting control information by a base station in a wireless communication system, and device therefor|
The present application discloses a method for transmitting, by a base station, downlink control information to a terminal in a wireless communication system. More particularly, the method comprises the steps of: allocating, to a transmission resource, the downlink control information for the terminal; and transmitting, to the terminal, the downlink control information using the transmission resource.
|Method and apparatus for allocating enhanced physical downlink control channel in wireless access system|
The present invention relates to various methods for allocating and transmitting an enhanced physical downlink control channel, and apparatuses for supporting same. According to one embodiment of the present invention, a method for receiving an enhanced physical downlink control channel (e-pdcch) in a wireless access system can comprise the steps of: receiving an e-pdcch indication signal comprising information on the existence of an e-pdcch signal and resource allocation information, which shows a resource region from which the e-pdcch is transmitted; and receiving the e-pdcch signal from the resource region that is shown by the resource allocation information, wherein the e-pdcch indication signal can be transmitted from a legacy pdcch region..
|Method and apparatus for transmitting reference signal in multi-antenna system|
Provided are a method and apparatus for transmitting a reference signal in a multi-antenna system. A terminal generates a plurality of reference signal sequences to which cyclic shift values different from each other are allocated, generates an orthogonal frequency division multiplexing (ofdm) symbol to which the plurality of reference signal sequences are mapped, and transmits the ofdm symbol to a base station through a plurality of antennas.
|Method and apparatus of signaling and procedure to support uplink power level determination|
Method and apparatus are disclosed for determining a physical uplink power level for transmissions on a physical uplink channel. In one embodiment, a random access channel (rach) uplink message is transmitted.
|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..
|Methods and apparatus for dual connectivity operation in a wireless communication network|
Dual-connectivity for the user equipment (ue) in a cellular network is performed by monitoring a plurality of cells. During dual-connectivity, the ue may be simultaneously connected to one serving cell for the control plane (c-plane) and to another serving cell, controlled by a different enodeb, for the user plane (u-plane).
|Method and apparatus for extending control signalling in an lte network|
A method for a wireless network node to support an extended control signaling is provided. The method comprises configuring a control signaling message over extended control symbols on a layer 1 (l1) downlink control channel, the control signaling message encoded over an increased aggregation of control channel elements (cces) in a time domain; placing the controlling signaling message in a designated set of subframes on the l1 downlink control channel; indicating a support for the extended control signaling to one or more ues; indicating to the one or more ues a position of the designated set of the subframes in a spare field of the master information block (mib); and transmitting the control signaling message to the one or more ues over the l1 downlink control channel..
|Frequency re-use for service and gateway beams|
A method is presented for communicating data in a multibeam satellite system utilizing frequency re-use. The method comprises establishing uplink service beams and downlink service beams between a satellite and a plurality of subscriber terminals.
|Method and apparatus for indicating downlink channel measurement and method and apparatus performing downlink channel measurement in a relaying system|
The present invention provides a method and apparatus for indicating downlink channel measurement and a method and apparatus for performing channel measurement. The method for indicating downlink channel measurement comprises: receiving information on interferes of a user equipment; generating, based on downlink subframe configuration information, a downlink channel measurement indication for each of possible combinations of the interferers, wherein the channel measurement indication is adapted to indicate a subframe group to be measured by a user equipment; and sending the downlink channel measurement indication to the user equipment so as to indicate the user equipment to perform corresponding downlink channel measurement.
|Apparatus for transmitting and receiving data in a wireless communication system and method thereof|
An apparatus for transmitting and receiving data in a wireless communication system method thereof are disclosed. In a terminal of a wireless communication system, the present invention includes receiving a physical downlink control channel (hereinafter abbreviated pdcch), receiving a physical downlink shared channel (hereinafter abbreviated pdsch), and demodulating the pdsch by interpreting the pdcch according to a type of a subframe including the pdcch and the pdsch..
|Triggering downlink traffic with timing indication|
A method, apparatus and computer program product are provided in order to provide a technique to trigger downlink traffic with a timing indication. The method, apparatus and computer program product may utilize one or more of a (1) “downlink transmission time” in the synch ndp frame indicating the beginning of downlink data transmission; (2) “downlink transmission restricted access” in the synch ndp frame starting at “downlink transmission time” during which downlink data transmission will take place to one or more stas; (3) an indication in the ndp frame whether the downlink data transmission is unicast or broadcast; (4) ack as a response to an ndp frame indicating whether the sta will be available to receive data at downlink transmission time or not; or (5) a new message format for the short ndp frame with timing information..
|Method and apparatus for transmitting uplink control information in a wireless communication system|
Disclosed are a method and apparatus for transmitting uplink control information in a wireless communication system. A method for transmitting uplink control information by a terminal in a wireless communication system may comprise the steps of: receiving, from a base station, information on a primary cell (pcell) and at least one secondary cell (scell) configured for said terminal; and transmitting the uplink control information through the specific scell configured for said terminal when said pcell and said scell are set to different time division duplex (tdd) downlink (dl)/uplink (ul) configurations and said terminal is set to simultaneously transmit a physical uplink control channel (pucch) and a physical uplink shared channel (pusch)..
|Methods and apparatus for multiple connectivity in a tdd system|
A wireless communication system (14) comprises points that have time division duplex, tdd, configurations. Information is obtained indicating the tdd configuration of each of multiple points to which a particular wireless communication device (6) is simultaneously connected.
|Methods and devices for reporting a downlink channel quality|
The invention relates to a method (90) in a user equipment (4) for reporting a downlink channel quality in a communication system (1) comprising a first radio access technology system (2) and a second radio access technology system (3). The user equipment (4) is in connection with a primary serving cell on the first radio access technology system (2) and with a secondary serving cell on the second radio access technology system (3).
|Power difference between scell and pcell in a carrier aggregation system|
In accordance with an example embodiment of the present invention, a method is disclosed. Determining that downlink reception on a first cc is degraded due to interference caused by a second cc.