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Time Division

Time Division patent applications listed include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.

Related Categories:

Multiplex Communications


Duplex > Communication Over Free Space > Time Division



User equipment and base station having dynamic resource allocation mechanism and multiple connections
04/23/15 - 20150109971 - The present disclosure proposes a dynamic resource allocation mechanism for a user equipment and a base station having multiple connections. According to one of the exemplary embodiment, the present disclosure proposes a user equipment (UE) which includes at least but not limited to a transmitter and a receiver for transmitting...

Coverage enhancement and semi-persistent scheduling support in lte-tdd systems
04/23/15 - 20150109972 - Flexible Transmission Time Interval (TTI) bundling sizes may be used to provide efficient use of the radio spectrum in LTE-TDD communications. Different uplink/downlink frame configurations may be associated with different TTI bundling sizes. In one implementation, each of the frames may include uplink data that is transmitted via TTI bundles...

Channel state information (csi) report subsets under flexible time division duplex (tdd) ul/dl configuration
04/23/15 - 20150109973 - A method for flexible time division duplex (TDD) UL/DL configuration is provided. The method includes designating all subframes in a time division duplex configuration as downlink subframes, with the exception of any subframes scheduled for uplink data and control transmission. The method then includes monitoring downlink control channels in the...

System and method for reference signal transmission to avoid collision
04/23/15 - 20150109974 - A method of wireless communications for use with user equipment, comprising identifying a subframe in a radio frame in which a synchronizing signal is to be transmitted, and transmitting a reference signal to the user equipment in a subframe other than the identified subframe....

Communication method for performing dynamic radio dormant mechanism
04/23/15 - 20150109975 - A communication method for a communication station to transmit time division duplex frames includes transmitting a capability of supporting a dynamic radio dormant mechanism to one or more communication devices; collecting at least one of a traffic information, an energy policy, an energy status and an interference policy for determining...

Apparatus and methods of time domain multiplexing solutions for in-device coexistence
04/23/15 - 20150109976 - Embodiments of systems and methods for time domain multiplexing solutions for in-device coexistence are generally described herein. Other embodiments may be described and claimed....

Frame format in communications
04/16/15 - 20150103702 - A method for selecting a frame format in a communications system is disclosed. A network apparatus (AP) predefines a TDD data frame structure such that a TDD frame has a predefined frame duration defining an uplink-downlink switching point periodicity. The frame duration defines a maximum time in which a half-duplex...

Resource allocation in different tdd configurations with cross carrier scheduling
04/16/15 - 20150103703 - A downlink resource grant is on a first component carrier having a first downlink to uplink DL/UL subframe configuration, and cross schedules to a second component carrier having a different second DL/UL subframe configuration. If a first set SI of downlink subframes associated with a subframe n of the first...

Switching between downlink and uplink
04/16/15 - 20150103704 - Communications of a time division duplex radio frame provided with at least one special subframe including at least one pilot period is provided such that at least one special subframe is used for signalling of critical control information. Other subframes of the radio frame than the at least one special...

Method for transmitting control information and apparatus for same
04/16/15 - 20150103705 - A method for transmitting uplink control information by a user equipment in a wireless communication system supporting carrier aggregation of a plurality of cells and operating in a time division duplex (TDD). The method according to one embodiment includes receiving, by the user equipment, downlink signals on the plurality of...

Method of interference coordination in time division duplexing system, base station, and system
04/16/15 - 20150103706 - An interference coordination method in TDD systems, an apparatus, and a system are disclosed in embodiments of this invention, which relate to the communication field. The method provided in the embodiment of this invention comprises: receiving by an interfered cell a uplink-downlink configuration of an interfering cell sent from the...

Method and apparatus for invoking a response of the current tdd subframe configuration
04/09/15 - 20150098368 - The invention provides a method and apparatus for invoking a response of a current TDD subframe configuration. First, the first base station sends to the second base station a first message for invoking a response of a current TDD subframe configuration of the second base station. Second, the second base...

Reference signal design for special subframe configurations
04/09/15 - 20150098369 - Example embodiments are directed towards a base station, and corresponding method therein, for transmitting reference signals in a TOD wireless communications network, if a transmission format Is a Demodulation Reference Signal (DMRS) based format, the base station may transmit, to a user equipment, reference signals according a time and frequency...

Method of handling harq resource for fdd carrier and related communication device
04/09/15 - 20150098370 - A method of determining hybrid automatic repeat request (HARQ) resource of a uplink (UL) subframe of a frequency-division duplexing (FDD) carrier for an advanced communication device comprises determining an association index according to an operation of the FDD carrier; determining a new association set according to the association index and...

Tti-bundling and sps operation in lte tdd
04/09/15 - 20150098371 - A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus receives a semi-persistent scheduling (SPS) message indicating transmission of a first packet during a first period of a first hybrid automatic repeat request (HARQ) process, and a configuration for TTI-bundled transmission. The apparatus transmits...

Methods and systems for transmitting and receiving uplink control channel information
04/02/15 - 20150092626 - At least one example embodiment discloses a method of receiving uplink control information in a communication system having at least a first and a second cell in communication with a user equipment (UE), the first cell being using a time-division duplex (TDD) carrier and configured to communicate using TDD transmissions...

Base station and method for performing tdd base station uplink/downlink subframe configuration
04/02/15 - 20150092627 - The invention discloses a base station and a method of configuring TDD uplink-downlink subframes for base stations, and the method includes: determining a coupling loss between every two of base stations in a preset region; clustering the base stations in the preset region according to the coupling loss between every...

Method and apparatus for pucch resource mapping
04/02/15 - 20150092628 - A method for PUCCH resource mapping is provided, which includes in a traffic adaptive TDD system, classifying downlink sub-frames within a binding window into sub-frames of a first category and sub-frames of a second category, when feeding back HARQ-ACK (Hybrid Automatic Repeat request- Acknowledgement) for a downlink sub-frame, performing PUCCH...

Method and apparatus for performing harq based on dynamic change of wireless resources in wireless communication system
04/02/15 - 20150092629 - The present invention relates to a method for a terminal to transceive a signal through a base station and a predetermined carrier in a time division duplex (TDD) communication system. In detail, the method includes the steps of: receiving, from the base station, information on dynamically changeable uplink/downlink subframe settings;...

Ue enhancement in fdd-tdd joint operation networks
04/02/15 - 20150092630 - To support the new characteristics where FDD carriers and TDD carriers provide different services with different QoS or with different coverage or with different mobility robustness, UE enhancements of FDD-TDD network are proposed. In one embodiment, a dual mode UE in idle mode camps on a source cell and determines...

Communication method
04/02/15 - 20150092631 - A communication method applicable for a LTE TDD system is disclosed. The communication method includes: if a radio frame has a plurality of UL sub-frames, adopting a flexible TTI bundling operation on at least one of the UL sub-frames in the radio frame; and when the radio frame is changed...

Method and apparatus of uplink scheduling and harq timing
04/02/15 - 20150092632 - The present invention relates to an apparatus and method for controlling an uplink (UL) scheduling and Hybrid Automatic Repeat reQuest (HARQ) timing supported in a TDD-FDD CA environment. The method includes receiving, on a first serving cell, at least one of a first UL grant and a first Physical HARQ...

Generation of harq-ack information and power control of harq-ack signals in tdd systems with downlink of carrier aggregation
04/02/15 - 20150092633 - Methods and apparatus are provided for a User Equipment (UE) configured to have multiple cells in a DownLink (DL) of a Time Division Duplex (TDD) communication system so as to determine a power of an acknowledgement signal that the UE transmits in a control channel and to determine a number...

Devices for sending and receiving feedback information
04/02/15 - 20150092634 - A User Equipment (UE) for sending feedback information is described. The UE includes a processor and instructions stored in memory that is in electronic communication with the processor. The UE determines a primary cell (PCell) feedback parameter corresponding to a PCell. The UE also determines a secondary cell (SCell) feedback...

Method for transmitting a sounding reference signal in a wireless communication system, and apparatus for same
04/02/15 - 20150092635 - A method for receiving an aperiodic sounding reference signal (SRS) from a user equipment (UE) at a base station in a time division duplex (TDD) communication system. The method according to one embodiment includes transmitting downlink control information (DCI) including a request of the aperiodic SRS to the UE. The...

Method and system for harq operation and scheduling in joint tdd and fdd carrier aggregation
03/26/15 - 20150085711 - A method at a user equipment for hybrid automatic repeat request (HARQ) operation, the user equipment operating on a primary carrier having a first duplex mode and on at least one secondary carrier having a second duplex mode, the method using HARQ timing of the first duplex mode if the...

Discontinuous reception configuration
03/26/15 - 20150085712 - A configuration of a discontinuous reception (DRX) operation is provided at a user equipment (UE) to handle dynamic uplink-downlink configuration changes....

Harq timelines for tdd-fdd carrier aggregation
03/26/15 - 20150085713 - Disclosed embodiments include an end-to-end UE and eNB HARQ protocol design for various TDD−FDD joint operation wireless network configurations. Designs for timing of HARQ feedback in response to PDSCH and PUSCH transmissions (or simply, PDSCH and PUSCH) include both HARQ feedback from a UE, and HARQ feedback from an eNB....

Method for sending hybrid automatic repeat request acknowledgement message and user equipment
03/26/15 - 20150085714 - The disclosure discloses a method for sending a Hybrid Automatic Repeat Request Acknowledgement (HARQ-ACK) message in a Time Division Duplex (TDD) system and a User Equipment (UE), in order that the UE feeds back the HARQ-ACK message of each downlink serving cell and downlink subframe in Physical Uplink Control Channel...

Method and device for transmitting signal on special sub-frame in tdd system
03/26/15 - 20150085715 - A method for configuring a special sub-frame of Long Term Evolved (LTE) Time Division Duplex (TDD) is provided. The method includes transmitting, by a base station a new signaling to configure special sub-frame configuration and related control parameters for the new User Equipment (UE); scheduling, by the base station, the...

Apparatus and method for controlling uplink power control in communication system
03/26/15 - 20150085716 - The present invention provides an apparatus and method for uplink signal power control in a dynamic Time Division Duplexing (TDD) cell. According to the method, after accessing a dynamic TDD cell, a User Equipment (UE) receives from an evolved NodeB (eNB) an uplink power control parameter which has been adjusted...

System and method for coverage enhancements of broadcast channels
03/26/15 - 20150085717 - Methods and apparatus are provided for a base station to transmit and for a UE to detect broadcast information when the UE operates in a Coverage Enhancement (CE) mode. The base station transmits repetitions of signaling conveying broadcast information in one or more subframes of each frame in a quadruple...

Simplified fdd-tdd carrier aggregation
03/26/15 - 20150085718 - Methods, systems, and devices are described for multi-carrier communications involving one or more TDD component carriers and one or more FDD component carriers in a wireless communications network. Some described embodiments are directed to systems and methods for multi-carrier communications for a half-duplex device. The described methods, systems, and devices...

Systems and methods for subframe offset
03/26/15 - 20150085719 - A user equipment (UE) is described. The UE determines a duplex method of each serving cell for frequency-division duplexing (FDD) and time-division duplexing (TDD) carrier aggregation. At least one serving cell is a TDD cell and at least one serving cell is a FDD cell. The UE also determines a...

Reduced delay harq process timeline for fdd-tdd carrier aggregation
03/26/15 - 20150085720 - Methods, systems, and devices for multi-carrier scheduling in wireless communications networks. The described techniques may be employed to minimize hybrid automatic repeat requests (HARQ) delay in a wireless communications network utilizing one or more TDD component carriers and one or more FDD component carriers. Scheduling of TDD uplink (UL) and...

Method and apparatus for enhancing ul harq process
03/26/15 - 20150085721 - A method for determining an uplink hybrid automatic repeat request (UL HARQ) timeline of a time-division duplex (TDD) uplink-downlink (UL-DL) configuration is disclosed herein. The method for determining the UL HARQ timeline includes the following steps: allocating a subframe of the TDD UL-DL configuration for transmission of an UL HARQ...


03/26/15 - 20150085722 - Technology to provide physical uplink control channel (PUCCH) resource allocation in time division duplex (TDD) for a hybrid automatic retransmission request-acknowledge (HARQ-ACK) transmission in a subframe n is disclosed. In an example, a user equipment (UE) can include first circuitry configured to detect a downlink control channel within a prior...

Wireless communication method, base station, and terminal
03/26/15 - 20150085723 - In one method, a base station sends configuration notification information to a terminal, so as to notify the terminal to set at least one radio frame meet a first subframe configuration, where the first subframe configuration includes N−1 downlink subframes, one special subframe, and zero uplink subframe. In another method,...

High interference indicator for time division duplex wireless communication systems
03/19/15 - 20150078220 - Embodiments of the claimed subject matter provide embodiments of methods for supporting dynamic sub frame re-configuration in a time division duplex wireless communication system. One embodiment includes transmitting, from a first base station to a second base station, a message indicating that the first base station is configured for scheduling...

Method and apparatus for aggregating carriers in wireless communication systems
03/19/15 - 20150078221 - The present invention relates to a method and apparatus for aggregating carriers in wireless communication systems. In the method, a first carrier is set up, and a second carrier is added in addition to the first carrier. In addition, the first carrier is a time division duplex (TDD) carrier for...

Signal-transceiving method, and apparatus therefor
03/19/15 - 20150078222 - The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and apparatus for transmitting an uplink signal in a time division duplex (TDD)-based wireless communication system. The method comprises the steps of receiving scheduling information for data transmission in a first uplink...

Method for transceiving signals, and apparatus therefor
03/19/15 - 20150078223 - The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for a terminal to perform a HARQ process in which a scheduling cell of a first UL-DL configuration and a P-scheduling cell of a second TDD UL-DL configuration are set in a...

Techniques and configurations associated with machine type communication in enhanced coverage mode
03/19/15 - 20150078224 - Embodiments of the present disclosure describe systems and methods for enhanced coverage machine type communication (MTC). Various embodiments may include systems and methods for scheduling a starting subframe, timing sequence, or resource for various transmissions with repetition to achieve a coverage extension target for MTC. Other embodiments may be described...

Method and apparatus for transmitting control information
03/19/15 - 20150078225 - A method is described for transmitting uplink control information at a communication apparatus configured with a plurality of cells including a Primary Cell (PCell) and a Secondary Cell (SCell) in a wireless communication system operating in a Time Division Duplex (TDD) mode. One or more downlink signals requiring Hybrid Automatic...

Device and method for transmitting random access preamble
03/12/15 - 20150071134 - Base Station (BS) and User Equipment (UE) apparatuses for configuring a Random Access CHannel (RACH), and methods thereof, are provided. The method for a BS to configure a RACH includes generating configuration information on RACH resources, transmitting the configuration information on the RACH resources to a UE, receiving a random...

Method and device for transmitting channel state information in wireless communication system
03/05/15 - 20150063177 - The present invention relates to a wireless communication system. A method for transmitting channel state information (CSI) by a user equipment in a wireless communication system includes receiving a CSI-reference signal (CSI-RS), determining overhead of a common reference signal (CRS) resource element based on the same antenna port number as...

Systems and methods for reducing in-device coexistence (idc) interference
03/05/15 - 20150063178 - Systems and methods are provided for avoiding in-device coexistence interference on a user equipment. A first wireless communication circuitry and a second wireless communication circuitry operate concurrently on the user equipment. The second wireless communication circuitry detects an operational status of the first wireless communication circuitry, and determines if the...

Method for transmitting control information and apparatus therefor
03/05/15 - 20150063179 - A method and a communication device are described for transmitting uplink control information in a wireless communication system supporting carrier aggregation. At least one of a plurality of physical downlink control channels (PDCCHs) indicating downlink semi-persistent scheduling (SPS) release or physical downlink shared channels (PDSCHs) is received in a plurality...

Wireless communication method supporting harq, user equipment, and base station
03/05/15 - 20150063180 - The present invention provides a wireless communication method supporting hybrid automatic repeat request. The method includes: sending first hybrid automatic repeat request (HARQ) process quantity indication information to a user equipment UE; and if second HARQ process quantity indication information is further sent to the UE, determining a second HARQ...

Mitigating interference between co-located wireless technologies
02/26/15 - 20150055516 - An apparatus has a first communication module that is compatible with a first wireless communication technology, and a second communication module that is compatible with a second, different, wireless communication technology. Transmissions by each communication module may contribute to interference at the other communication module. In one example, a Block...

Method for resource management in a tdd cellular communication network and resource management system
02/26/15 - 20150055517 - A method for resource management in a cellular communication network, wherein said network includes at least one base station per cell for a plurality of cells that operates in TDD (Time Division Duplex) transmission mode, each base station having a respective coverage area is characterized in that said base stations...

Method for transmitting or receiving uplink signal
02/26/15 - 20150055518 - The present invention relates to a method for user equipment transmitting an uplink signal in a time division duplex (TDD) wireless communication system, according to one embodiment. The method comprises: detecting a downlink control signal; and transmitting the uplink signal on the basis of uplink-related control information which is included...

Harq feedback implementation method and device
02/26/15 - 20150055519 - Disclosed are an HARQ feedback implementation method and device. The method comprises: according to a TDD uplink/downlink reference configuration, dividing all downlink subframes contained in an FDD downlink carrier into two types, wherein the downlink subframes of the first type correspond to downlink subframes or/and special subframes in the TDD...

Base station and communication control method
02/26/15 - 20150055520 - A control unit 130 assigns a first new call to a radio resource of a frequency channel with a small interference power and, when there is an available radio resource, assigns new calls after the first new call to radio resources of a frequency channel the same as, or adjacent...

Method and device for aggregating carriers in wireless communication system
02/26/15 - 20150055521 - The present invention relates to a method and a device for aggregating carriers in a wireless communication system. In the method, a first carrier is configured, and a second carrier is configured in addition to the first carrier. The first carrier is a time division duplex (TDD) carrier for which...

Method for processing pdsch data
02/26/15 - 20150055522 - An embodiment of the present invention provides a method for processing Physical Downlink Shared Channel (PDSCH) data, to be applied in a system, which supports to adjust uplink and downlink (UL-DL) configurations for Time Division Multiplexing (TDD) dynamically. The method includes: receiving, by a User Equipment (UE), a System Information...

Ul-dl interference management for tdd eimta
02/26/15 - 20150055523 - Uplink-downlink (UL-DL) interference management may benefit various communication systems, such as communication systems of the third generation partnership project (3GPP) long term evolution advanced (LTE-Advanced) release 12 (Rel-12). More specifically, certain methods and apparatuses may provide LTE time division duplex (TDD) enhancement for DL-UL Interference Management and Traffic Adaptation (TDD...

Method, system and apparatus of time-division-duplex (tdd) uplink-downlink (ul-dl) configuration management
02/26/15 - 20150055524 - Some demonstrative embodiments include devices, systems and/or methods of Time-Division Duplexing (TDD) Uplink-Downlink (UL-DL) configuration management. For example, a node may communicate a message including a cell identifier identifying a first cell controlled by the node, and a TDD configuration update to update at least one other node, which controls...

Method and apparatus for feeding back aperiodic csi in flexible tdd reconfiguration system
02/19/15 - 20150049652 - The present disclosure provides a method for feeding back aperiodic CSI in a flexible TDD reconfiguration cell. The method includes a UE receiving information about signaling transmitted from an eNB to acquire locations of subframes corresponding to CH and CL, wherein CH and CL correspond to different subframe sets, respectively....

Method and system for handling ue behavior in inter-band carrier aggregation with cell specific tdd configuration
02/19/15 - 20150049653 - A method and system to handle behavior of a carrier aggregation capable User Equipment (UE) that does not support simultaneous reception and transmission in overlapped Downlink (DL)-Uplink (UL) sub frames during inter-band Carrier Aggregation (CA) for cell specific TDD configuration is disclosed. The method specifies whether the UE is allowed...

Time-division duplexing communication method, system and device
02/19/15 - 20150049654 - The embodiments of the present invention relate to the technical field of wireless communications, and particularly, to a time-division duplexing communication method, system and device, which are used for solving the problem in the prior art that there is no uplink or downlink HARQ sequential relationship for a dynamic uplink...

Method and device for ack/nack transmission in tdd-based wireless communication system
02/19/15 - 20150049655 - A method is described of reporting control information in a wireless communication system. A user equipment (UE) supporting at least one cell including a primary cell selects a physical uplink control channel (PUCCH) format among a plurality of PUCCH formats including a first PUCCH format and a second PUCCH format....

Dynamic cell clustering
02/12/15 - 20150043390 - In some implementations, a method for dynamic cell clustering includes splitting, by an initial central coordinator, the cluster into two or more clusters in response to a message from a small cell in a cluster. The initial cluster includes a plurality of cells, including the small cell, with each cell...

Systems and methods for reconfiguration signaling
02/12/15 - 20150043391 - A User Equipment (UE) for receiving time-division duplexing (TDD) uplink/downlink (UL/DL) configurations is described. The UE includes a processor and instructions stored in memory that is in electronic communication with the processor. The UE decodes UL/DL reconfiguration signaling on a physical downlink control channel (PDCCH) or enhanced physical downlink control...

Dynamic configuration of subframes in a radio communications system
02/12/15 - 20150043392 - The technology disclosed provides the ability for a subframe to be dynamically configured in time division duplex (TDD) communications between a UE radio terminal and a radio network node. A frame structure includes one or more subframes preconfigured as a downlink subframe, one or more subframes preconfigured as an uplink...

Retransmission method for time division duplexing self-adaptive frame structure, and network side device
02/12/15 - 20150043393 - A retransmission method for a time division duplexing self-adaptive frame structure, and a network side device relate to a technology of dynamically allocating uplink and downlink sub-frames in an LTE-advance (3GPP Release11) TDD communication system. The method comprises: during transmission of a TDD self-adaptive frame, for an uplink sub-frame, if...

Downlink control signalling transmission method and device
02/12/15 - 20150043394 - The invention relates to the field of communications and provides a method of and apparatus for transmitting downlink control information, and the method includes: for transmission of DCI over any carrier, determining DAI information fields in uplink scheduling DCI and downlink scheduling DCI to be carried over the carrier and...

Method and apparatus for data transmission
02/12/15 - 20150043395 - Provided are a method and apparatus for data transmission. In the method, frequency spectrum aggregation is performed on multiple first frequency spectrums corresponding to multiple systems; and data are transmitted on a second frequency spectrum formed through the frequency spectrum aggregation performed on the multiple first frequency spectrums. Through the...

Dynamic signaling of the downlink and uplink subframe allocation for a tdd wireless communication system
02/12/15 - 20150043396 - An apparatus for use in a wireless communication network, comprising a processing resource configured to determine a time interval for periodic time division duplex (TDD) Uplink/Downlink (UL/DL) reconfiguration windows, generate a UL/DL reconfiguration command to indicate a dynamic TDD UL/DL allocation change, and encode the UL/DL reconfiguration command in a...

Method of handling communication operation and related communication device
02/12/15 - 20150043397 - A method of handling a communication operation for a communication device comprising performing a reception in a first subframe of a time-division duplexing (TDD) carrier from a network; and performing a transmission for responding the reception via a second subframe of a uplink (UL) carrier to the network; wherein the...

Techniques for device-to-device communications
02/12/15 - 20150043398 - Examples may include techniques to enable user equipment (UE) to establish a device-to-device (D2D) communication link for D2D communications with another UE. In some examples, the D2D communications may occur when either both or at least one UE is within a coverage area for a wireless wide area network (WWAN)....

Devices for reporting uplink information
02/12/15 - 20150043399 - A user equipment (UE) for reporting information is described. The UE includes a processor and instructions stored in memory that is in electronic communication with the processor. The UE selects a reference cell having a reference uplink-downlink (UL-DL) configuration. The UE also selects a first uplink subframe from the reference...

Mobile communication system and channel transmission/reception method thereof
02/12/15 - 20150043400 - A method for transmitting a physical channel in a Time Division Duplex (TDD) communication system capable of carrier aggregation is provided for supporting aggregation of carriers having different TDD configurations. The communication method of a terminal in a TDD radio communication system accomplishing broadband through carrier aggregation of primary and...

Mobile communication system and channel transmission/reception method thereof
02/12/15 - 20150043401 - A method for transmitting a physical channel in a Time Division Duplex (TDD) communication system capable of carrier aggregation is provided for supporting aggregation of carriers having different TDD configurations. The communication method of a terminal in a TDD radio communication system accomplishing broadband through carrier aggregation of primary and...