32results about "Transmission path division" patented technology

The invention discloses a method and a device for transmitting control information, and provides a diversity transmission model-based control information transmitting mode. The method for transmitting the control information comprises the following steps of: ensuring that each enhanced-control channel elements E-CCE for transmitting an enhanced-physical downlink control channel (E-PDCCH) comprises a plurality of enhanced-resource element groups (E-REGs) with the same quantity, and the E-REGs of each E-CCE are respectively assigned to different frequency RB (resource blocks); and bearing each downlink control information (DCI) transmitted on the E-PDCCH into at least one E-CCE to be transmitted. Each part in one DCI is respectively borne on a plurality of different frequency bands which correspond to the E-PDCCH to be transmitted, so that the transmitting stability and reliability of the DCI can be improved.

A communication apparatus capable of improving the spectrum usage rate of a system, especially, the spectrum usage rate in connection with both a fast fading and a channel estimation error as compared with the conventional sub-band adaptive method, while reducing the degree of the difficulty in achieving the adaptation, and further reducing the feedback overhead. In this apparatus, a sub-band group AMC parameter selecting part (318) selects an AMC parameter of each sub-band. An adaptive reception control part (503) must control an adaptive demodulating/decoding part (311), while controlling a parallel/serial converter (312) in a stage preceding the adaptive demodulation and decoding processes, and combining received symbols in the same sub-band group for demodulation and decoding.

Systems and methods for reliably communicating data at high data rates between surface and downhole equipment over a power cable by multiplexing data, modulating the data onto orthogonal carrier frequencies, communicating the modulated carrier signals over the power cable, recovering of the modulated signals, and demodulating the data stream from the recovered signal. One embodiment comprises a system that includes surface equipment connected by a power cable to an ESP system that has a gauge package connected to it. The gauge package uses a high-temperature DSP to perform the data processing associated with OFDM communications.

Methods, systems, and devices are described for wireless communication at a device. A wireless device may be configured with a transmission time interval (TTI) bundling parameter. The device may then identify one or more resources for an uplink (UL) control channel based on the TTI bundling parameter (e.g., using either an implicit or an explicit indication from another wireless node such as a serving cell of a base station) and transmit the UL control channel using the identified resources. The device may also identify a downlink control information (DCI) format based on the TTI bundling parameter. For example, a resource allocation granularity level may be associated with the bundling parameter, and the length of a DCI field may depend on the resource allocation granularity level.

The embodiment of the invention relates to the technical field of wireless communication, in particular to a method, a system and equipment for scheduling, which are used for conducting span-carrier wave scheduling on overlapped subframes after using carrier wave aggregation with different TDD (time division duplex) uplink/downlink configuration. The method in the embodiment of the invention comprises the following steps: when network side equipment needs to carry out scheduling to user equipment using the carrier waves with different TDD uplink/downlink configuration to carry out aggregation, SIF (sound intermediate frequency) for scheduling the carrier waves with the configuration different from the TDD uplink/downlink configuration of the carrier waves is determined; the network side equipment transmits DCI (data communication interrogate) containing the SIF to a user terminal by bearing downlink subframes n in the carrier waves of downlink control information, wherein n is integral number not less than 0. In the invention, span-carrier wave scheduling can be carried out on the overlapped subframes aiming at the aggregated carrier waves with different TDD uplink/downlink configuration, and the system performance and the resource utilization rate can be improved.

Apparatus and method for communication are provided. The apparatus includes a controller for controlling the transmission and reception of data on one or more carriers utilizing Time Division Duplexing and frames including sub frames, where multiple carriers utilized by different apparatuses are synchronized with each other and a predetermined number of sub frames of each frame are reserved for predetermined transmission directions and a scheduler for allocating the rest of the sub frames carrier specifically either in downlink or uplink direction.

CSIT error considerate delay-sensitive user access systems are provided in a multi-user OFDMA environment comprises a user delay sensitivity tracking component, a CSIT estimating component, a system queue state tracking component and a cross layer scheduling component. The techniques assume heterogeneous users with respect to delay and assume that CSIT information includes error, and optimally allocates broadcast resources, e.g., power, subcarriers and data rate, based on such assumptions.

The present invention relates to a method and apparatus for determining radio link failure between the UE and the eNB in a wireless communication system. Particularly, the present invention provides a method and apparatus for determining radio link failure efficiently in such a way that the UE measures the radio link quality of the anchor carrier, the radio link qualities of the aggregated carriers, and the radio link quality of neighbor cells in order, and determines whether the radio link quality fulfills a predetermined condition.

Relay station (200) in a communication system using PCells and Scells for backhaul communication, and configuring DL BHSFs of the PCell, and UL BHSFs of the PCell located after a prescribed number of subframes after a DL BHSF includes: ACK/NACK generator (203) generating a response signal for a downlink signal received in PCell and SCells from base station (100); transmitter (205) transmitting a response signal in response to a downlink signal received in an SCell in a DL BHSF configured at a timing different from that of the DL BHSF of the PCell, the response signal in UL BHSFs of the SCell a prescribed number of subframes after the DL BHSF, and a response signal for a downlink signal received in an SCell in a DL BHSF having the same timing as that of the DL BHSF of the PCell, and the response in a UL BHSF of the PCell.

The present invention relates to a method for defining, in a TDD wireless communication system in which broadband is configured by means of carrier aggregation, transceiving timing for a data channel and a control channel when cross-carrier scheduling is implemented.

An infrastructure equipment transmitting/receiving data to/from one or more communications devices in a wireless communications network, includes a transmitter, receiver, and controller controlling the transmitter and receiver to provide a wireless access interface providing communications resources arranged in time divided units of a system bandwidth providing plural blocks of communications resources, and one or more narrowband carriers. Each carrier provides, within a carrier frequency bandwidth, communications resources for allocation to narrow band communications devices, the carrier bandwidth being less than and within the system bandwidth, signals being transmitted to the narrowband communications devices via the narrow band carriers with a first power. The controller controls the transmitter to transmit signals on a down-link of a narrowband carrier to a narrow-band communications device with an increased power, power of the signals being increased to a greater second power to reduce a time of communicating a high priority message.

Provided are a method for reporting channel state information of a terminal in a wireless communication system and a device using the method. A terminal receives at least one or more A-CSI request message that triggers aperiodic CSI reports for a plurality of CSI processes of a first cell, and as a response to the at least one or more A-CSI request message, updates at least one of the plurality of CSI processes that were triggered, wherein, if a CSI process capability is defined as the maximum number of CSI processes that the terminal may operate for a specific cell, and if the CSI process capability for the first cell is less than the number of the triggered aperiodic CSI reports, and the CSI process capability for a second cell is more than the number of aperiodic CSI reports triggered for the second cell, the residual CSI process capability for the second cell is used for updating the CSI process for the first cell.

The invention discloses a system information sending and receiving method and device in a digital audio broadcasting system. The method comprises the following steps of: when in sending, performing CRC (cyclic redundancy check) coding and channel coding on the system information to generate a coding bit stream; performing bit interleaving and constellation mapping on the coding bit stream to obtain a continuous pilot frequency including the system information; multiplexing a continuous pilot frequency signal with other signal elements of the system to obtain a frequency-domain signal of an orthogonal multiplexing structure according to a carrier allocation method stipulated by a frequency spectrum mode; converting the frequency-domain signal into a time-domain signal for sending; when in receiving, converting the time-domain signal into a frequency-domain signal; extracting the continuous pilot frequency including the system information from an effective carrier of the frequency-domain signal according to the position stipulated by the frequency spectrum mode; obtaining an estimated value of the system information through de-mapping, de-interleaving and channel decoding; and judging the correctness of the system information by use of CRC decoding, and outputting the system information. The method and device disclosed by the invention can improve the transmission robustness on the basis of guaranteeing the transmission efficiency of the system information.

A receiving station apparatus controls a number of null carriers included in a transmission signal transmitted by a transmitting station apparatus in a communication system adopting a multicarrier modulation system to suppress inter-carrier interference by using the null carrier. For example, a reception-quality measuring unit measures a reception quality of a subcarrier group forming the transmission signal, and a number-of-null carriers determining unit determines the number of null carriers included in a next transmission signal based on the reception quality.

A method for transmitting an uplink control channel at a terminal in a Single Carrier Frequency Division Multiple Access (SC-FDMA)-based mobile communication system is provided. The transmission method includes receiving a control channel index allocated from a base station; transmitting control information at every symbol through a subband and a Zadoff-Chue sequence offset resource, which are mapped to the control channel index according to a first grouping rule; and transmitting control information through a subband and a Zadoff-Chue sequence offset resource, which are mapped to the control channel index according to a second grouping rule, beginning from a symbol after a slot boundary.

Methods and apparatuses disclosed herein enable the use of Demodulation Reference Signal, DMRS, sequences that are numbered relative to an overall system bandwidth (30), while simultaneously enablingwireless communication devices (12) to determine the DRMS sequence elements mapped to their scheduled bandwidths (36) within the system bandwidth (30). Advantageously, the wireless communication devices (12) need not know the system bandwidth (30), or even be aware of where their scheduled bandwidths (36) reside within the system bandwidth (30).

A method for processing a control channel at a user agent (UA) to identify at least one of an uplink and a downlink resource allocated by a resource grant within a multi-carrier communication system wherein resource grants are specified by control channel element (CCE) subset candidates, the method comprising the steps of identifying the number of configured carriers used to communicate with the access device, based on the number of configured carriers used to communicate with the access device, identifying a number of CCE subset candidates to decode and decoding up to the identified number of CCE subset candidates in an attempt to identify the resource grant.

The invention provides a resource configuration method, a terminal and a network device, and solves the problem that a clear method for configuring semi-persistent resources does not exist yet when aplurality of different beams or transmission points are adopted to transmit and receive data to UE. The resource configuration method provided by the embodiment of the invention comprises the following steps: acquiring resource configuration information of semi-persistent resources, wherein the resource configuration information comprises identification information of a plurality of transmission carriers and resource allocation information corresponding to the identification information of each transmission carrier; and determining at least one of available resource position information of thetransmission carrier in each resource period and a hybrid automatic repeat request (HARQ) process number available in each resource period according to the resource configuration information of the semi-persistent resources. According to the invention, different semi-persistent resources are configured on different uplink transmission carriers and/or downlink transmission carriers, the utilization rate of the semi-persistent resources under multiple transmission carriers is improved, and meanwhile, the time delay generated by scheduling during data transmission is reduced.

The disclosed mobile station (UE) is equipped with: measurement units (102) that measure the wireless quality of a currently communicating cell or a neighboring cell for each carrier among at least two carriers; a determination unit (104) that determines whether or not the wireless base station (eNB) should be notified of the measurement results of the measurement units (102) for each carrier among the at least two carriers; and a transmission unit (106) that transmits the measurement results of the measurement units (102) to the wireless base station (eNB) when the determination unit (104) has determined that the wireless base station (eNB) should be notified of the measurement results of the measurement units (102). Along with the measurement results relating to the carrier for which it has been determined by the determination unit (104) that the wireless base station (eNB) shall be notified of the measurement results of the measurement units (102), the transmission unit (106) transmits measurement results relating to carriers other than said carrier.

The invention relates to an anti-interference transmission method and device, computer equipment and a storage medium, belonging to the technical field of data transmission. The method includes the following steps: determining an interfered subcarrier within a transmission bandwidth; selecting a remapping subcarrier from the two sides of the transmission bandwidth in an out-of-band mode accordingto the interfered subcarrier; combining the selected remapping subcarrier and subcarriers that are not interfered within the transmission bandwidth to obtain an available subcarrier set; and performing data transmission through the available subcarrier set. According to the above technical scheme, the problem that an interference source in an OFDM system cannot be avoided in a targeted manner canbe solved, the influence of the interference can be eliminated in a targeted manner, and the efficiency and accuracy of the transmission of the interfered data can be improved.

The invention discloses an uplink resource unit distribution method, which comprises the following steps of: sequentially selecting wireless stations of each priority level according to the priority level of each wireless station from high to low, determining the to-be-sent data volume of the selected current wireless station, and calculating the sendable data volume of a target resource unit corresponding to the current wireless station; and when the sendable data volume is greater than or equal to the to-be-sent data volume, and the ratio of the time-frequency resource required for transmitting the to-be-sent data volume to the total time-frequency resource of the target resource unit is greater than or equal to a preset resource allocation coefficient and less than or equal to 1, allocating the target resource unit to the current wireless station. The embodiment of the invention also discloses a corresponding uplink resource unit distribution device. By adopting the embodiment of the invention, the corresponding resource unit is allocated to each wireless station according to the to-be-sent data volume of each wireless station, so that the utilization rate of time-frequency resources is effectively improved, and the resource distribution is optimized.

Various methods and systems are provided for edge windowing of orthogonal frequency division multiplexing (OFDM) systems. In one example, among others, a method includes obtaining an edge windowing portion by reducing a cyclic prefix size for a quantity of edge subcarriers in an OFDM symbol and reducing side lobes by applying a windowing function to the edge subcarriers. In another example, a device includes a separator capable of dividing subcarriers of an OFDM symbol into first and second subcarrier groups, a first CP adder capable of obtaining a windowing portion by adjusting a cyclic prefix size of the first subcarrier group, and a first windower capable of reducing side lobes by applying a windowing function to the first subcarrier group. In another example, a method includes determining a RMS delay spread of a mobile station and scheduling a subcarrier based at least in part upon the RMS delay spread.

Methods, systems, and devices for wireless communications are described. A full duplex user equipment (UE) may provide a channel state information (CSI) report to a base station to enable the base station to schedule simultaneous the uplink and downlink communications for the full duplex UE. For example, the base station may transmit a CSI report configuration to the UE that indicates for the UE to report a full duplex CSI. In some cases, the CSI report configuration may include the UE to report CSI under a full duplex mode with or without an indication of an uplink bandwidth. Accordingly, the UE may calculate and report the self-full duplex mode CSI to the base station according to the received configuration. The base station may then determine a radio resource allocation and transport format for downlink data transfer and for uplink data transfer under the full duplex mode.

A wireless network includes a plurality of access points with at least pairwise overlapping wireless coverage, each of the access points comprising an OFDMA modulation system and a channel scheduler coupled to the OFDMA modulation system which is configured to set up a number of virtual wireless interfaces of the access point, each virtual wireless interface being associated with a dedicated set of subcarriers within the OFDMA spectrum. At least one first of the virtual wireless interfaces is configured to host all communication links between the access point and local mobile clients to the access point. A least one second of the virtual wireless interfaces is configured to host communication links between the access point and one of the neighbouring access points.