716results about "Transmission path sub-channels allocation" patented technology

Methods for a User Equipment (UE) to transmit Channel Quality Index (CQI) feedback information, and an indicator in feedback information, to an evolved Node B (eNB) in a wireless communication system, and apparatuses therefore, are provided. A method for a UE to transmit CQI feedback information to eNB in a wireless communication system, includes obtaining one or more Transmission Points Configurations for Coordinated MultiPoint (CoMP) (TPCCs), each TPCC including a unique combination of one or more cells in a CoMP measurement set, estimating a channel for one or more cells in the CoMP measurement set, computing a CQI for each of at least one of the one or more TPCCs, each CQI being computed using one or more estimated channels that correspond to the combination of one or more cells included in a corresponding TPCC, generating CQI feedback information based on the one or more CQIs, and transmitting the CQI feedback information.

Methods of component carrier aggregation are provided. One embodiment of the method includes aggregating, at a base station, one or more first component carriers that are backwards compatible with a first carrier type and one or more second component carriers that are non-backwards compatible with the first carrier type for communication with first user equipment according to a second carrier type used by the second component carrier(s).

A distributed radio frequency communication system facilitates communication between a wireless terminal and a core network. The system includes a remote radio unit (RRU) coupled to at least one antenna to communicate with the wireless terminal. The RRU includes electronic circuitry to perform at least a first portion of a first-level protocol of a radio access network (RAN) for communicating between the wireless terminal and the core network. The system also includes a baseband unit (BBU) coupled to the core network, and configured to perform at least a second-level protocol of the RAN. A fronthaul link is coupled to the BBU and the RRU. The fronthaul link utilizes an adaptive fronthaul protocol for communication between the BBU and the RRU. The adaptive fronthaul protocol has provisions for adapting to conditions of the fronthaul link and radio network by changing the way data is communicated over the fronthaul link.

Methods and systems for sharing white space with primary services and other emerging services are provided. Signal distribution within a specified location, such as a dwelling, is performed using a home gateway that identifies unused white space, reserves such white space spectrum, and delivers data to one or more devices at the respective location using the reserved spectrum. Signalling between the devices and the gateway is performed over a shared signalling channel, which enables the gateway to advise the devices from where and when to receive data. The gateway also uses a common spectrum reservation OFDM symbol to advise the neighbouring gateways of the local spectrum reservation.

A radio communication system is provided. An uplink transmission method of a user equipment in a radio communication system includes performing Fourier transform on one or more data sequences to generate one or more first frequency-domain sequences, applying precoding for multi-antenna transmission to the one or more first frequency-domain sequences to generate one or more second frequency-domain sequences; performing inverse Fourier transform on the one or more second frequency-domain sequences to generate one or more transmission symbols, and transmitting the one or more transmission symbols via multiple antennas.

A scheme for transmission of control channel information in a compact form intended to support SPS (Semi-Persistent Scheduling) in a wireless communication system. As applied to LTE, the scheme is to indicate a pre-configured UE-specific resource allocation in a Downlink Control Information (DCI) format containing information for multiple UEs in the same PDCCH. In order to avoid increasing the number of blind decodes, the DCI format size may be the same as an existing DCI format. Preferably the size of the new format is the same as that of DCI formats 0 / 1A / 3 / 3A. The number of required bits per UE is minimised by signalling only one of a limited set of DCI messages per UE. The scheme provides a means for re-configuring SPS resources for multiple UEs using a single PDCCH transmission, whilst enabling better support for variable packet sizes and variable intervals between packets than currently defined SPS.

The invention relates to a method for efficiently performing a Se NB change for a UE in dual connectivity. When reconfiguring a data radio bearer going via the Se NB to another target base station, the UE may compile a PDCP status report comprising status information for all of the data radio bearer going via the Se NB, accompanied respectively by a radio bearer ID to identify the radio bearer to which the status report information pertains. Further, the PDCP status report is directly transmitted by the UE to the Me NB to avoid the backhaul delay between the Se NB and the Me NB; this may be done by using a signaling radio bearer (e.g. RRC message), or data radio bearer to the Me NB (e.g. PDCP control PDU), or by using a physical channel transmission to the Me NB (e.g. MAC CE).

Certain aspects of the present disclosure relate to techniques for configuring an adaptive frame structure for wireless communications systems using unlicensed radio frequency spectrum. A base station (BS) may determine whether another device is transmitting on a channel in the unlicensed radio frequency spectrum or one or more other network conditions pertaining to the channel, determine a frame structure from a plurality of frame structures used for data communications based at least in part on the one or more network conditions, wherein each of the plurality of frame structures has a different frame duration, and communicate with a user equipment (UE) using the determined frame structure. A UE may determine a frame structure from a plurality of frame structures used for data communications, wherein each of the plurality of frame structures has a different frame duration, and communicate with a BS using the determined frame structure.

Disclosed is a communication method in a multi-carrier system, including: allocating radio resources for transmitting signals to a middle guard band; and transmitting the signals through the radio resources; wherein the middle guard band is a frequency band positioned between used bands of a plurality of carriers, respectively, within an aggregated carrier formed by aggregating the plurality of carriers and a unit allocating the radio resources of the middle guard band is different from a unit allocating the radio resources of the used bands. A multi-carrier system uses the guard bands between the carriers to improve channel estimation performance or increase efficiency of radio resources.

The invention discloses a method, device and system for transmitting and receiving data, relating to a communication technology. The method comprises the following steps of: partitioning a resource block pair into at least two sub-resource block pairs, carrying out resource distribution on an E-PDCCH (Evolved-Physical Downlink Control Channel) by the sub-resource block pairs as a unit, and transmitting each data by one or a plurality of sub-resource block pairs according to the sizes of the data and the sub-resource block pairs, so as to improve the data transmission efficiency.

In accordance with an example embodiment of the present invention, there is at least a method, apparatus, and computer program for dividing an available bandwidth into a plurality of frequency bands or channels, dividing each of the plurality of frequency bands or channels into a plurality of orthogonal sub-carriers, organizing the sub-carriers into a plurality of sub-channels, and assigning at least some of the generated sub-channels to at least one corresponding radio link between parent and child nodes of a mesh network.

An Orthogonal Frequency Division Multiplexing communication system is provided that triggers a transmission of an uplink sounding signal by use of a Downlink Control Information (DCI) message. In various embodiments of the invention, the DCI message may be used to individually trigger an uplink sounding signal by a single user equipment or may be used to trigger an uplink sounding signal by a group of users equipment.

A method and device for allocating resources in a multiple frequency band system are disclosed. In a method for detecting a resource indication value (RIV) indicating not only a start index (S) of consecutive virtual resource blocks (VRBs) allocated to a first UE capable of simultaneously receiving information from a plurality of frequency bands, but also a length (L) of the consecutive VRBs, in a wireless mobile communication system capable of using the plurality of frequency bands, the method includes receiving, by the first UE, the RIV, and detecting the RIV, wherein the detected is greater than a maximum value usable as an RIV allocated to a second UE capable of receiving information from only one frequency band.

A wireless communication system is disclosed including a MIMO wireless communication apparatus that can communicate through multiple antennas and a non-MIMO wireless communication apparatus that can communicate through a single antenna or multiple antennas. The MIMO wireless communication apparatus includes a communication unit configured to transmit and receive control information divided into a second control information containing information related to the demodulation and decoding of traffic channel and a first control information containing information related to the MIMO separation of the second control information.

A base station apparatus capable of communicating with user equipment terminals using an uplink shared channel includes a selection unit configured to select a user equipment terminal to which the base station apparatus allocates the shared channel among the user equipment terminals other than a user equipment terminal where a time frame in which a control channel for the shared channel is transmitted in downlink, a time frame in which the shared channel is received, or a time frame in which acknowledgement information for the shared channel is transmitted overlaps a time interval for measuring a cell with a different frequency; and an allocation unit configured to allocate the shared channel to the user equipment terminal selected by the selection unit.

The present invention relates to a method and apparatus for beamformed transmission in a wireless local area network. According to one aspect of the present invention, a method for transmitting a Physical layer Protocol Data Unit (PPDU) frame to a plurality of stations (STAs) by an Access Point (AP) in a wireless local area network may be provided. The method may include transmitting a SIGNAL field of the PPDU frame, the SIGNAL field including beamforming information indicating whether beamforming is applied to respective data units of the PPDU frame, and transmitting the data units of the PPDU frame, the data units being individually beamformed or not beamformed according to the beamforming information.

A wireless communications device for a multiple input multiple output wireless communications system includes a radio frequency transceiver that includes at least two antennae and a medium access control device that includes a link adaptation module. The link adaptation module dynamically adjusts a bandwidth of the wireless communications device based on a transmission error rate and a correlation measurement at a remote wireless communications device. A transmission error module receives the transmission error rate from the remote wireless communications device and generates a transmission error control signal. A signal correlation module receives the correlation measurement from the remote wireless communication device and generates a signal correlation control signal. The link adaptation module adjusts at least one of the bandwidth and an amount of spatial multiplexing that is executed by a space-time processor based on the transmission error control signal and the signal correlation control signal.

A method for supporting a handover in a broadband wireless access communication system including an MSS, a serving BS providing service to the MSS, and a plurality of neighbor base stations, in which each of the BSs includes cells using different sub-channel bands. The method includes: measuring, by the BSS, intensities of signals received from the BSs, transmitting to the serving BS a request for a handover based on the measured signal intensities, establishing a connection with a target BS, to which a handover of the MSS is requested, from among the neighbor BSs before terminating a connection with the serving BS, and performing a soft handover by establishing a simultaneous connection with the two BSs in a handover area. The serving BS and the target BS allocate the same sub-channel including the same sub-carriers to the MSS when the mobile subscriber station performs the soft handover.

A method and system for using frequency resources in a communication system are provided. In the method and system, a total frequency band is divided into at least two frequency subbands and there is a guard interval between frequency subbands. A first frequency subband includes a TDD UL frequency subband and a TDD DL frequency subband. A second frequency subband includes an FDD UL frequency subband. A BS sets a frequency band between the TDD UL frequency subband and an FDD UL frequency subband as an additional UL frequency subband, and receives a signal from an MS in the additional UL frequency subband.

The present invention relates to a data transceiving method in a communication system based on a plurality of carriers, and more particularly, to a method of designing a sequence in a communication system using orthogonal subcarriers. The present invention includes the steps of generating a time-domain sequence with a specific length in a time domain, generating a frequency-domain sequence by performing a DFT or FFT operation on the time-domain sequence according to a length of the generated sequence, including a DC subcarrier and a guard subcarrier in the frequency-domain sequence, and performing an IDFT or IFFT operation on the frequency-domain sequence including the DC subcarrier and the guard subcarrier.

A method for reducing power consumption in a multi-user digital communication system and mobile station employing the method adjusts receive and transmit mode durations of the mobile device using downlink and uplink allocations from a base station of the system, as well as other factors.

A frame structure for a new radio access technology (RAT) is configured by a network node. The network node configures a first frame which has one legacy transmission time interval (TTI) and a second frame which has multiple short TTIs, and communicates with a user equipment (UE) by using at least one of the first frame and the second frame. The UE may be a one of a massive machine-type communication (mMTC) UE, an ultra-reliable and low latency communication (URLLC) UE or an enhanced vehicle-to-everything (eV2X)

A method of allocating resources to control information transmitted from a base station (BS) to a subscriber terminal in a downlink (DL) frame and the subscriber terminal for receiving the control information are provided. A preamble and a common control channel in a DL frame from a particular BS are allocated to a sub-carrier band that is different from that of a preamble and a common control channel in a DL frame from a neighbor BS, concurrently with the preamble and the common control channel of the neighbor BS. User-specific traffic in the DL frame of the particular BS is allocated to a total sub-carrier band concurrently with user-specific traffic of the neighbor BS.

An adaptive modulation and coding method is provided by the present invention, comprising: selecting punctured Physical Resource Blocks (PRBs) to transmit the downlink data for the User Equipment (UE); determining the Transport Block Size (TBS) and the number of punctured PRB pairs for transmission to the UE based on the carried service; scheduling the downlink data for the UE based on the determined TBS, and transmitting the number of the used punctured PRB pairs and a Modulation and Coding Scheme (MCS) sequence number to the UE; and the UE converting the number of the punctured PRB pairs to the number of normal PRB pairs, determining the modulation scheme and the TBS sequence number based on the MCS sequence number, and determining the TBS of the downlink data based on the number of the normal PRB pairs and the TBS sequence number. The specific condition when downlink data are transmitted with punctured PRBs may be performed in the present invention on the basis of utilizing the existing resources and adaptive processing of the general subframes by performing conversion between the number of punctured PRBs and the number of normal PRBs in scheduling resource for the UE with the NodeB, which may be implemented simply and efficiently.

The invention discloses a method for allocating and scheduling radio resources in an orthogonal frequency division multiplexing (OFDM) system. The method comprises the following steps of: defining at least one short resource unit on a network side, wherein the short resource unit is smaller than a resource block (RB); selecting a short resource unit at an evolved node B (eNB); and allocating the radio resources for user equipment (UE) according to the selected short resource unit at the eNB, and notifying the UE of scheduling information of the radio resources. The invention also discloses a device for allocating and scheduling the radio resources in the OFDM system. By the method, more efficient resource allocation can be provided for a service with small data volume so as to improve the utilization rate of the radio resources.

A method is provided for transmitting a digital signal. The method includes generating a plurality of spatial streams from a digital signal and transforming the spatial streams into a plurality of space-time streams. Each of the space-time streams are cycled in the frequency domain among each of a plurality of transmit antennas. The space-time streams are wirelessly transmitted from the plurality of transmit antennas.

The present invention relates to methods and apparatuses for transmitting data in a multicarrier telecommunication system and in particular for performing modulation and coding for low transmission power data. Scheduling information indicating resources on which a terminal is scheduled to transmit data is received at the terminal. The scheduling information includes a modulation and coding indicator set. Data are transmitted on the scheduled resources in accordance with a modulation and coding indicator in the modulation and coding indicator set and with a transmission parameter of the data to be transmitted.

A resource allocation method of a relay station in a wireless communication system employing the relay station is provided. The method includes: receiving information on a resource allocation pattern for an access link and a backhaul link of a first frequency band; and determining a resource allocation pattern for an access link and a backhaul link of a second frequency band on the basis of the resource allocation pattern of the first frequency band, wherein the first frequency band is any one of an uplink frequency band and a downlink frequency band, and the second frequency band is a remaining one of the uplink frequency band and the downlink frequency band.