1033results about "Allocation timing" patented technology

A method is provided for allocating resources of a control channel in a mobile communication system using Orthogonal Frequency Division Multiplexing (OFDM). The method includes, when a time index and a frequency index of available Resource Elements (REs) are defined as l and k, respectively, dividing the available REs in a two-dimensional structure of (k, l); and time-first-allocating each RE to a plurality of RE groups while increasing the time index l for each frequency index k from an initial value up to a predetermined range.

In a closed-loop wireless communication system, a codebook-based feedback control mechanism is provided where feedback from each of a plurality of receivers is scheduled to control the feedback so that the receiving devices do not needlessly feed back precoding information to the transmitting device. The feedback may be controlled by establishing and distributing a schedule to control when each receiver feeds back preceding information, or by establishing and distributing a metric-based feedback threshold that must be satisfied before feedback is permitted.

An apparatus and method for uplink transmission in a wireless communication system are provided. The method comprises detecting an expiry of a time alignment timer in a MAC (Medium Access Control) layer, the time alignment timer being used to control how long the UE is considered uplink time aligned, notifying a release of PUCCH (Physical Uplink Control Channel) resources from the MAC layer to a RRC (Radio Resource Control) layer when the expiry of the time alignment timer is detected and keeping a part of the PUCCH (Physical Uplink Control Channel) resources in the RRC layer.

The present disclosure proposes a method for transmitting and receiving data through sidelink in a wireless communication system supporting Vehicle-to-Everything (V2X) communication.

Particularly, the method performed by a first User Equipment includes receiving, from a base station, Downlink Control Information (DCI) including information related to a transmission of first control information; transmitting, to the second User Equipment, the first control information based on the received DCI; and transmitting, to the second User Equipment, one or more data through the sidelink.

A method and apparatus performing carrier management in a broadband wireless communication system supporting multi-carrier (MC) are disclosed. A method for a single-carrier supported mobile station (MS) to perform a carrier change with a MC supported base station (BS) includes transmitting a message indicating a support of a basic MC mode in which the MS is aware of a MC operation of the BS, receiving a carrier management command message including an action code and an action time on a serving carrier, transmitting, in response to the carrier management command message, a confirmation message indicating readiness of signal transmission/reception through a target carrier on a target carrier, and receiving a control signal and data from the BS on the target carrier, wherein the serving carrier and the target carrier are controlled by a common Medium Access Control (MAC) of the BS.

Disclosed is the radio (wireless) communication system providing a radio communication service and the terminal, and more particularly, a method of handling time alignment command during a random access procedure in an Evolved Universal Mobile Telecommunications System (E-UMTS) evolved from the Universal Mobile Telecommunications System (UMTS) or a Long Term Evolution (LTE) system is provided.

A method for managing carriers allocated to a mobile station in a broadband wireless access system supporting multiple carriers, and an apparatus for use in the method are disclosed. A carrier management method for allowing a mobile station to perform carrier management in a broadband wireless access system supporting multiple carriers includes receiving a first message, which includes activation information indicating activation of at least one target carrier from among one or more second carriers allocated through a first carrier, from a base station, and transmitting a second message, which informs the base station of readiness or non-readiness of the at least one target carrier according to a result of the activation, to the base station. The activation information includes information indicating an activation time point, and the transmitting of the second message is performed at a specific time indicated by the activation time point information.

The present description relates to an apparatus and method for receiving a control channel in a multi-component carrier system. The method for performing random access disclosed in the present description comprises the steps of: transmitting a random access preamble to a base station from an activated sub-serving cell; monitoring physical downlink control channel candidates during a response window one the basis of a certain aggregation in a temporary search space in a control region of the activated sub-serving cell, wherein the control region consists of a group of control channel elements; and adjusting an uplink time of the activated sub-serving cell according to a time advance command indicated by a random access response when the random access response, including a random access identifier corresponding to the random access preamble, is received in the response window.

A method and apparatus for transmitting an aperiodic sounding reference signal (SRS) in a wireless communication system is provided. The method include receiving a power offset parameter for an aperiodic SRS set by a base station (BS) through an higher layer, setting transmission power of the aperiodic SRS based transmission power on the power offset parameter, and transmitting the aperiodic SRS to the BS based on the set transmission power of the aperiodic SRS.

A method for receiving a broadcast signal through a new carrier type (NCT) in a wireless communication system according to one embodiment of the present invention is executed by a terminal and comprises the steps of: blind-decoding a physical broadcast channel (PBCH) received from a base station; and acquiring a number of antenna ports and system information of the base station from the PBCH, wherein the blind decoding is executed within a candidate range for the blind decoding of the PBCH corresponding to a partial area of a downlink subframe, and the candidate range is an area in which a symbol section is excluded in a downlink subframe to which a physical downlink control channel (PDDCH) of a neighboring base station is mapped, and can be indicated by the base station in advance.

Disclosed are operation methods of a communication node in a network supporting licensed and unlicensed bands. An operation method of a user equipment (UE) may comprises receiving, from a base station, a physical downlink control channel (PDCCH) including downlink control information (DCI) in a subframe n−1 of an unlicensed band; decoding the DCI using a common radio network temporary identifier (RNTI); and identifying the number of symbols of the subframe n−1 or a subframe n based on the decoded DCI. Therefore, a performance of the network can be enhanced.

A backhaul radio is disclosed that operates in multipath propagation environments such as obstructed LOS conditions with uncoordinated interference sources in the same operating band. Such a backhaul radio may use a combination of interference mitigation procedures across multiple of the frequency, time, spatial and cancellation domains. Such backhaul radios may communicate with each other to coordinate radio resource allocations such that accurate interference assessment and channel propagation characteristics assessment may be determined during normal operation.

A method and apparatus for selecting and allocating antennas efficiently are provided. The method includes transmitting, to a User Equipment (UE), information indicating a configuration of a plurality of Channel Status Information Reference Signals (CSI-RSs) through UE specific signaling during an initial access attempt with the UE; receiving, from the UE, CSI-RS measurement results indicating configured CSI-RSs; transmitting CSI-RSs corresponding to a set of available distributed ports (D-ports) based on received signal strength information included in results of the CSI-RS measurement; and determining a CSI-RS of a selected D-port set for use in communications based on feedback information received from the UE.

The present invention relates to a method and apparatus in which a terminal transmits aperiodic sounding reference signals (SRSs) in a wireless communication system. The terminal receives a triggering bit for triggering the transmission of the aperiodic SRSs from a base station, and transmits the aperiodic SRSs through at least one uplink (UL) component carrier (CC) from among a plurality of uplink component carriers.

The present invention provides a method, a base station and a terminal for distributing multiple carrier resource. The method comprises the steps of using the base station to distribute a main carrier wave and an auxiliary carrier wave to a first terminal to thereby realize the communication between the base station and the first terminal; using the base station to activate the setting time of a timer to release a physical uplink control channel(PUCC) resource and a sounding reference signal(SRS) resource distributed to the first terminal and used for the auxiliary carrier wave to thereby break off the communication between the base station and the first terminal based on the auxiliary carrier wave. The invention also provides the base station and the terminal. By using the invention, the multiple carrier resource can be distributed reasonably and effectively.

A multiple access system for a network using multicarrier modulation. To contend for service a subscriber station selects an upcoming frame in whose contention window it will contend, selects a contention slot within the window, selects a contention channel corresponding to a subset of the carriers used by the network, and imposes a contention code differentially on the carriers in the contention channel.

A user apparatus includes an information storage unit configured to store band combination information indicating a combination of bands that can be used in carrier aggregation in the user apparatus, and a notification control unit configured to explicitly or implicitly add, to the band combination information, capability information indicating whether the user apparatus is able to set a primary cell by using a band of a first duplex mode in the carrier aggregation, and to notify a base station of the band combination information to which the capability information is added.

The present invention provides a method, respective apparatuses, system and computer program product for obtaining channel state information in a coordinated multi-point transmission/reception communication network. The method includes allocating a first sounding resource to at least one of a plurality of user equipment in a coordinated multi-point transmission/reception communication network for transmitting sounding reference signal to a base station of a serving cell, and allocating a second sounding resource to the at least one user equipment for transmitting sounding reference signal to a base station of an interfering cell, wherein the first and the second sounding resource are different from each other.

There is provided a method of operating an electronic shelf label system performed by a gateway wirelessly connected to a plurality of electronic shelf label tags and providing data provided from an electronic shelf label server to the plurality of electronic shelf label tags through a data channel, the method including, interlocking with the electronic shelf label server to thereby be allocated time slots of a wakeup channel, providing information regarding the time slots allocated to the gateway to the plurality of electronic shelf label tags, and receiving an update data request from at least one of the plurality of electronic shelf label tags when the time slots allocated to the gateway have elapsed and providing update data in response to the corresponding update data request.

The invention provides a transmission method and device, a first communication node, a second communication node and a medium. The method comprises the following steps: sending indication information,wherein the indication information is used for indicating a second communication node to send an uplink signal or indicating the second communication node to receive a downlink signal; and performingsignal transmission with the second communication node according to the indication information.