Abstract: Disclosed is a positioning device, a position measurement server, and a position measurement system capable of estimating a relatively accurate position on the basis of a signal transmitted from a terminal in a mobile communication system. Particularly, the positioning device acquires channel configuration information of an uplink signal of a target terminal, receives the uplink signal of the target terminal through one or more uplink signal reception units on the basis of the channel configuration information, measures information on the received uplink signal, and transmits the information on the uplink signal of the target terminal to the position measurement server, and the position measurement server receives the information on the uplink signal of the target terminal from the positioning device and calculates a position of the target terminal on the basis of the information on the uplink signal of the target terminal.

Abstract: A method for handling beam blockage in a wireless communication system by a user equipment (UE), a method for handling beam blockage in a wireless communication system by a base station, a UE, and a base station are provided. The method for handling beam blockage in a wireless communication system by a UE includes detecting, by a user equipment (UE), a blockage of at least one beam; determining, by the UE, a duration of the blockage of the at least one beam, wherein the duration of the blockage is determined at a time period at which the blockage is detected; and indicating, by the UE, the blockage.

Abstract: The present disclosure describes techniques and systems for beam search pilots for paging channel communications. In some aspects, a user device receives, from a base station of a wireless network, a beam search pilot on a beam. The user device determines that a signal quality of the beam search pilot meets a signal quality threshold. Based on this determination, the user device transmits, to the base station, an indication that the beam search pilot meets the signal quality threshold. The user device then receives a paging channel communication on the beam provided by the base station.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a receiver may identify a hybrid automatic repeat request (HARQ) process, from one or more HARQ processes configured for a delay-constrained time cycle, for a data communication received from a transmitter in the delay-constrained time cycle. A quantity of the one or more HARQ processes may be based at least in part on a quantity of data communications that the receiver is to receive from a transmitter during the delay-constrained time cycle. The receiver may transmit, to the transmitter and based at least in part on the data communication, HARQ feedback associated with the HARQ process. Numerous other aspects are provided.

Abstract: A method and device for determining power control configuration. it is determined whether a first transmit power control configuration based on a first uplink transmission is outdated; and a second transmit power control configuration for a second uplink transmission is determined based on a power control scheme. Therefore, transmit power control efficiency of sparse data transmissions may be improved.

Abstract: Embodiments of the present disclosure provide methods, apparatuses and computer programs for scheduling a transmission. A method implemented at a terminal device comprises receiving, from a network device, a scheduling configuration for a device to device, D2D, transmission of the terminal device; receiving, from the network device, an uplink scheduling grant for a cellular uplink transmission in a same time resource overlapping with the D2D transmission; determining a scheduling priority for the D2D transmission relative to the cellular uplink transmission based on at least one of: a first comparison between an associated priority of the scheduling configuration and a first priority threshold, and a transmission restriction; and performing at least one of the D2D transmission and the cellular uplink transmission based on the determined scheduling priority. With embodiments of the disclosure, D2D transmission and cellular uplink transmission from a terminal device can he well coordinated.

Abstract: A data transmission method is applied to a primary base station and includes: when configuring a secondary base station for a terminal, configuring, for the secondary base station, carrier parameters for use by the secondary base station; configuring, for the terminal, an autonomous denial rule used when cross-modulation interference occurs between carriers for use by the secondary base station and a carrier used by the primary base station; sending the carrier parameters and the autonomous denial rule to the terminal so that the terminal determines a carrier used by the secondary base station according to the carrier parameters, determines autonomously denied carriers according to the autonomous denial rule when cross-modulation interference occurs between the carrier used by the secondary base station and the carrier used by the primary base station, and performs data transmission by using carriers other than the autonomously denied carriers.

Abstract: A method and system for dynamically controlling connection-request transmission in a cell provided by an access node, the access node supporting access attempts by user equipment devices (UEs), each access attempt including the UE engaging in random access signaling with the access node and the UE then engaging in up to a maximum allowed number of connection-request transmissions to the access node in an effort to ensure successful receipt by the access node of a connection request from the UE, where an access block occurs if the access node does not successfully receive connection-request transmission from the UE through the maximum allowed number connection-request transmissions. An example method includes (i) determining an extent to which the cell has experienced such access blocks and (ii) using the determined extent as a basis to dynamically set a maximum allowed number of connection-request transmissions per access attempt in the cell.

Abstract: Techniques and apparatus for managing congestion in a wireless network are provided. One technique includes receiving one or more buffer status reports (BSRs) from one or more client stations. Each BSR indicates an amount of traffic in a transmit queue of the client station. An allocation of resource units (RUs) for the one or more client stations is determined, based on at least a type of traffic in each transmit queue of the one or more client stations, upon a determination that there is congestion on an uplink wireless channel shared by the one or more client stations. A frame that includes an indication of the allocation of RUs for the one or more client stations is generated. The frame is transmitted to the one or more client stations.

Abstract: A method for a device to perform a transmission in a wireless communication system, includes transmitting a plurality of transmit power control (TPC) commands and receiving physical uplink shared channel (PUSCH) having transmit power determined using one of the plurality of TPC commands, based on a corresponding PUSCH type, wherein each one of the plurality of TPC commands is related with a respective one of PUSCH types, the PUSCH types are related with PUSCH time lengths, and the PUSCH time lengths include a time length shorter than a single subframe.

Abstract: Embodiments of the present disclosure disclose a method and an apparatus for handling network congestion, and a system. The method includes: obtaining a transmitted data volume of a flow, and identifying a predictable flow and a non-predictable flow in the flow; collecting statistics about total data transmission volumes of the predictable flow and the non-predictable flow; obtaining a congestion transmission model of the predictable flow, and solving the congestion transmission model to obtain a scheduling policy for the predictable flow; and allocating bandwidths to the predictable flow and the non-predictable flow to obtain a bandwidth allocation result, and sending the bandwidth allocation result and the scheduling policy to the host, so that the host executes the scheduling policy in a scheduling period. This can prevent congestion in advance and reduce a delay of a delay-sensitive flow, and is applicable to a large data center.

Abstract: A mobile device and base station are enabled to support improved positioning accuracy in the presence of phase noise in high frequency radio network, such as in 5G New Radio network operating in mmWave. Phase Tracking Reference Signal (PTRS) may be transmitted with Positioning Reference Signals (PRS) and used for positioning and/or used to correct the phase offset between symbols in the PRS. A request may be made to transmit PTRS alone or with the PRS, or that the PRS is transmitted with a specific PRS frame structure, e.g., with a specific comb value, that minimizes the impact of phase noise. The PTRS or a phase ramp of the staggered symbols in the PRS may be used to estimate and correct the phase offset. Less than all of the symbols transmitted in the PRS may be used to generate positioning measurements to minimize the impact of phase noise.

Abstract: A method collects data via a sensor being part of a supply network which distributes a consumable. The sensor contains a measuring element which provides elementary measuring units, which correspond to a variable or a parameter, as raw measurement data, where consumption data are generated from the elementary measuring units. The sensor has a communication device and a storage device. To determine the measurement resolution of the sensor, the conditions for generating time stamps are determined using a correlation model. Time stamps of successive raw measurement data are generated in the sensor based on the correlation model, the time stamps are transmitted via a wired connection and/or via a radio path, with the result that the raw measurement data acquired by the measuring element are reconstructed and evaluated on the basis of the time stamps using the correlation model. The consumption data are transmitted in parallel with the time stamps.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive information identifying a channel configuration associated with a downlink channel. The user equipment may identify a repetition configuration for the downlink channel based at least in part on the channel configuration. The user equipment may monitor for the downlink channel in accordance with the repetition configuration based at least in part on identifying the repetition configuration. Numerous other aspects are provided.

Abstract: Systems and apparatuses for determining location of a wireless arbitrary device are disclosed herein. In one example, a computer implemented method for localization of a wireless arbitrary device in a wireless network architecture comprises initializing the wireless network architecture having a plurality of wireless anchor nodes and a plurality of wireless sensor nodes. The method further includes preparing, with the plurality of wireless anchor nodes, for localization of the wireless arbitrary device, waiting to receive a packet from the wireless arbitrary device, receiving a communication including a packet from the wireless arbitrary device, and transmitting a communication including a synchronization packet to other anchor nodes of the plurality of wireless anchor nodes.

Abstract: The present invention relates to a system that includes a transmission/reception point and a user equipment having different configurations in inter-band and performs a TDD (Time Division Duplex) method.

Abstract: Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a base station may signal quasi co-location (QCL) information to a first user equipment (UE). Based on the QCL information, the first UE may determine one or more QCL parameters for communications (such as a receive beam or a transmit beam) for uplink, downlink, or sidelink operations. The first UE may signal the determined QCL parameters to a second UE using a sidelink channel. The second UE may use the QCL parameters to configure a beam for a communication link that the second UE may use to communicate with one or more of the first UE via the sidelink channel, one or more other UEs via additional sidelink channels, or one or more base stations via uplink or downlink transmissions.

Abstract: In one embodiment, a device calculates one or more distributions of bitrates associated with an application whose traffic is conveyed via one or more paths in a network. The device detects throughput modes of the application, based on the one or more distributions of bitrates associated with the application. The device associates each throughput mode with a quality of experience label, to form a plurality of pairs of throughput modes and quality of experience labels. The device estimates a quality of experience metric for the application, based on a bitrate of the application and the plurality of pairs of throughput modes and quality of experience labels.

Abstract: An apparatus for wireless communication transmits a demodulation reference signal (DMRS) for at least eight orthogonal DMRS ports in a single symbol of at least one slot. The apparatus also transmits data in the at least one slot. The apparatus may correspond to a base station transmitting DMRS and downlink data. The apparatus may correspond to a user equipment (UE) transmitting DMRS and uplink data. The apparatus may bundle the DMRS across multiple slots with a bundled DMRS including a first set of the DMRS ports in a first single symbol of a first slot and a second set of the DMRS ports in a second single symbol of a second slot. The apparatus may transmit the DMRS in only a single slot in a physical resource block group (PRG) including two or more resource blocks using four frequency domain orthogonal cover codes (FD-OCC) and a frequency offset pattern.

Abstract: Systems and methods provide for use of spectrum emission masks to allow for two or more devices to coexist on a common communication bandwidth. The spectrum emission masks may include one, two, or three interior attenuation regions that, when implemented by a transmitting device, significantly reduce the transmission power in the interior attenuation regions. The interior attenuation regions may transmit to interior channels that separate one, two, or three outer channels of a plurality of channels spanning the common communication bandwidth.

Abstract: Methods, systems, and devices related to related to a two-stage transmission of downlink control messages for reducing signaling overhead are described. In one representative aspect, a method for wireless communication includes receiving, at a mobile device, a message from a wireless communication node. The message includes a first portion of a scheduling indication for scheduling a transmission. The method also includes determining, by the mobile device, a second portion of the scheduling indication based on one or more predetermined rules; determining, by the mobile device, the scheduling indication based on the first portion of the scheduling indication included in the message and the second portion of the scheduling indication; and performing, by the mobile device, the transmission based on the scheduling indication.

Abstract: A user equipment (UE) (200, 500, 1530) transmits data to a base station (100, 500, 1520) in a wireless communication network. The UE (200, 500, 1530) comprises multiple antenna ports, and selects a precoding matrix from a respective first, second, third, or fourth set of precoding matrices according to a number of spatial layers. The first, second, third, and fourth sets of precoding matrices are available for all coherence capabilities and are comprised within a larger set of precoding matrices. The larger set comprises precoding matrices that are not available for all coherence capabilities. The first, second, third, and fourth sets of precoding matrices correspond to one, two, three, or four spatial layers, respectively. The number of columns in the selected precoding matrix is equal to the number of spatial layers and each column comprises a single non-zero element and one or more zero elements.

Abstract: A data transmitting method, a data receiving method, a terminal device, and a network device are provided. The method includes: determining, by a terminal device, a target resource based on a time index and/or configuration information; and transmitting, by the terminal device, data to a network device on the target resource. The terminal device can control resource granularity of the target resource to meet transmission requirements of the terminal device, and can further avoid an actual data transmission process from occurring only on a same frequency domain resource and can further improve the frequency diversity gain in the non-slot transmission. In addition, randomness of interference can be enhanced as much as possible to avoid a same user from always or frequently being in conflict, so when a DMRS of the terminal device conflicts with that of other terminals, performance of user identification can be effectively improved.

Abstract: Methods and apparatuses for scheduling and indicating scheduling information in a wireless local area network (WLAN). A station (STA) includes a transceiver configured to receive a header for a protocol data unit and a controller configured to identify common information for a plurality of STAs that are scheduled in the WLAN from a common field in the header and to identify user-specific information for the STA from a user-specific field in the header that follows the common field. An access point (AP) includes a controller configured to include common information for a plurality STAs that are scheduled in the WLAN in a common field in a header of a protocol data unit, and to include user-specific information for the STAs in a user-specific field in the header that follows the common field. The AP also includes a transceiver configured to transmit the protocol data unit including the header.

Abstract: Techniques for indicating the presence of critical data at user equipment (UE) in an Radio Access Network (RAN) are described. According to various such techniques, a UE can identify critical data and send an information element including an indication of the critical data to a node (NB) of the RAN. The NB can then modify a schedule or handling the data communicated between the UE and the NB.

Abstract: A method may include determining that a user equipment (UE) device is a dual connectivity device capable of communicating via a Fifth Generation (5G) network and a non-5G network. The method may also include receiving, a radio resource control (RRC) connection request, establishing an RRC connection with the UE device and determining whether the first wireless station is a dual connectivity wireless station. The method may further include initiating, in response to determining that the first wireless station is not a dual connectivity wireless station, a handover of a wireless connection to the UE device from the first wireless station to a second wireless station that is a dual connectivity wireless station, or identifying, in response to determining that the first wireless station is a dual connectivity wireless station, a 5G wireless station in the 5G network to act as a serving cell for the UE device.

Abstract: The present disclosure generally relates to a radio resource allocation of a base station in a wireless communication system, and an operating method of a base station comprises the steps of: determining a buffer state estimation value of a terminal on the basis of whether the terminal is in an uplink talk spurt; allocating an uplink radio resource for the terminal on the basis of the buffer state estimation value; and transmitting information on the allocated uplink radio resource to the terminal.

Abstract: Provided are a method for transmitting a message by a user equipment (UE) in a wireless communication, and an apparatus supporting the same. The method may include: initiating early data transmission; receiving a random access response message including an uplink grant, from a base station (BS); based on the uplink grant, determining whether or not to transmit a first message related to the early data transmission to the BS, in response to the random access response message; and after determining to transmit the first message related to the early data transmission, resuming radio bearers for the early data transmission.

Abstract: Disclosed are a communication technique for merging, with IoT technology, a 5G communication system supporting a data transmission rate higher than a 4G system, and a system therefor. The present disclosure can be applied to intelligent services (for example, smart home, smart building, smart city, smart car or connected car, healthcare, digital education, retail, security and safety related services, and the like) on the basis of 5G communication technology and IoT-related technology. The present invention relates to a wireless communication system, and disclosed are a method and a device for performing retransmission when data for a first-type service is damaged by a second-type service data during transmission of the data for the first-type service in a communication system.

Abstract: A method for performing, by a terminal, an uplink HARQ process in a wireless communication system according to one embodiment of the present invention comprises the steps of: transmitting uplink data set to a first HARQ process ID; receiving an ACK/NACK response to the uplink data; and retransmitting the uplink data in response to the ACK/NACK response, wherein when the uplink data includes an SPS signal, the first HARQ process ID is set to one of values #0 to #n?1, and when the uplink data includes a non-SPS signal, the first HARQ process ID is set to one of values #n to #n+m?1, where n is the total number of HARQ processes that can be configured for the SPS signal, and m is the total number of HARQ processes that can be configured for the non-SPS signal.

Abstract: Methods, systems, and devices for wireless communication are described that provide for measuring one or more reference signals on one or more sub-bands of a wide-bandwidth communications frequency band. A user equipment (UE) may measure a path loss of a first frequency sub-band of a set of frequency sub-bands, and may determine an estimated path loss for a second frequency sub-band based on the measured path loss of the first frequency sub-band. A transmission power for the second frequency sub-band may be determined based on the estimated path loss for the second frequency sub-band, and a transmission using the second frequency sub-band may use the determined transmission power. The UE may maintain multiple transmitter power control (TPC) loops for multiple sub-bands, and power control commands for the first frequency sub-band may be used for one or more other sub-bands that are associated with the first sub-band.

Abstract: A repeater generates repetition signals by repeating uplink signals over a plurality of subframes; controller sets a timing for transmitting the repetition signals, based on information indicating a transmission candidate subframe for a sounding reference signal used for measuring an uplink reception quality; and a transmitter transmits the repetition signals at the set timing.

Abstract: Provided are a system and method for generating phase-coherent signaling via invocation of a respective phase synchronization calibration factor among wireless communications nodes. The calibration factor substantially and simultaneously removes an effect of multipath interference and propagation phase shift as between the nodes, thus allowing a direct correlation of phase with respect thereto in a subsequent phase-based ranging regime.

Abstract: This document describes techniques and devices for controlling radar transmissions within a licensed frequency band. In particular, a network is given control over whether or not a user equipment 110 transmits a radar signal within at least a portion of one or more licensed frequency bands associated with coverage of the network. With this control, the network can balance the use of the licensed frequency band for wireless communication operations and radar-based applications. The network can further control operations of the user equipment 110's radar system to control an amount of interference that is present within the licensed frequency band. With permission from the network via a radar grant message 524, the radar system can utilize frequencies within the licensed frequency band for radar-based applications, such as gesture recognition, presence detection, collision avoidance, and so forth.

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device that uses a first radio access technology (RAT) may identify a transmission timing scheme for a shared radio frequency spectrum band, the transmission timing scheme comprising a first set of time intervals allocated for transmissions using a first RAT and a second set of time intervals allocated for transmissions using a second RAT. The wireless device may transmit, during a time interval of the first set of time intervals, a channel reservation signal indicating an end time of the time interval and indicating that the wireless device uses the first RAT. The wireless device may transmit, based at least in part on the transmitted channel reservation signal, over the shared radio frequency spectrum band during at least a portion of the time interval before the end time of the time interval.

Abstract: Disclosed are a method for transmitting, by a terminal, a sounding reference signal to a base station without a physical uplink shard channel in a licensed assisted access (LAA) system in which a base station or a terminal performs listen-before-talk (LBT)-based signal transmission, and an apparatus supporting the same.

Abstract: A Data Radio Bearer (DRB) integrity protection configuration method, a network device and a User Equipment (UE) are provided. The DRB integrity protection configuration method includes: receiving configuration information indicating a DRB integrity protection configuration from a network device; and enabling a predetermined control process for DRB integrity protection in accordance with the configuration information. The predetermined control process is a DRB integrity protection activation process or a DRB integrity protection deactivation process.

Abstract: Systems and methods for sharing radio resources on an air interface. One embodiment comprises an access network element (e.g., base station) that stores a plurality of sharing patterns each comprising a different mapping of the radio resources on a physical layer of the air interface between Machine-Type Communications (MTC) and non-MTC. The access network element identifies a resource sharing window, receives input indicating conditions in the access network, selects a sharing pattern from the plurality of sharing patterns in the pattern database for the resource sharing window based on the conditions in the access network, schedules MTC transmissions on the air interface at a beginning of the resource sharing window based on the sharing pattern, and schedules non-MTC transmissions on the air interface at the beginning of the resource sharing window based on the sharing pattern.

Abstract: A method for communication by an edge communication device with a network via a relay communication device includes synchronizing to a network using an initial synchronization signal, associating with a relay communication device, entering a power saving state, awakening from the power saving state, searching for a periodic secondary relay synchronization signal (SRSS) transmitted by the relay communication device using an SRSS search window having a duration longer than a duration of a network search window for searching for the initial synchronization signal, synchronizing to the relay communication device based on the SRSS signal, and transmitting data to the relay communication device based on the synchronizing to enable the relay communication device to relay the data to the network.

Abstract: A terminal is disclosed including a receiver that receives a command to command at least one of activation and deactivation for a first cell that is configured with a short TTI having a shorter TTI length than a subframe and a processor that controls at least one of an activation operation and a deactivation operation of the first cell in units of a subframe based on the command. In other aspects, a radio communication method and base station are also disclosed.

Abstract: Various embodiments provide methods whereby a terminal and a base station transmit and receive signals in a wireless communication system, and devices for supporting same. Comprised are the steps of: transmitting a physical uplink shared channel (PUSCH) to a base station; receiving, from the base station, hybrid automatic repeat request-acknowledgment (HARQ-ACK) information on the PUSCH before transmitting the PUSCH a number of times, the number of times being the number of repeated transmissions corresponding to the PUSCH; and determining whether or not to end the transmission of the PUSCH on the basis of the received HARQ-ACK information. Accordingly, the terminal can effectively control unnecessarily repeated transmission of uplink data, and the power consumption of the terminal can be reduced.

Abstract: A method in a radio device of radio resource allocation for transmitting data on a plurality of communication carriers is provided. The method includes sensing on a first carrier and obtaining a first set of candidate radio resources for a first transmission on the first carrier, performing a first selection of one or a plurality of the candidate radio resources from the first set to be used for the first transmission, sensing on a second carrier and obtaining a second set of candidate radio resources for a second transmission on the second carrier, performing a second selection of one or a plurality of the candidate radio resources from the second set to be used for the second transmission, and performing the first selection and the second selection in dependency to each other.

Abstract: Systems, methods and computer software are disclosed for providing a bubble network are described. In one embodiment, a method is disclosed including providing an isolated base station having a coverage area, providing a local HetNet Gateway (HNG) disposed within the coverage area and in communication with the isolated base station, providing a local Evolved Packet Core (EPC) in communication with the local HNG and disposed within the coverage area, and wherein the bubble network is disconnected from a mobile operator core network.

Abstract: Provided are a method for skipping contention resolution. According to an embodiment of the present disclosure, the method includes: detecting data to be transmitted; receiving information informing that the data does not require a contention resolution; transmitting the data on a logical channel; and completing transmission of the data, based on an acknowledgement for the data or a number of transmission of the data.

Abstract: The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for performing an adaptive bundling transmission in wireless communication system, the method comprising: generating a uplink (UL) data to be transmitted for an uplink grant of a Hybrid-ARQ (HARQ) process; performing a new HARQ transmission of the UL data with resetting a counter of the HARQ process, performing a HARQ retransmission of the UL data, if the new HARQ transmission of the UL data fails, wherein the counter is counted each time a HARQ transmission of the UL data fails, wherein if the counter is equal to or larger than a threshold, the HARQ retransmission of the UL data is performed with bundling transmission.

Abstract: The ATSC 3.0 physical layer broadcast standard is extended with new OFDM numerology, L1 signaling and frame structure aligned with 5G. This is done to enable improved broadcast mobility and convergence 5G release 16 as a Non-3GPP access network. The 5G core network and Broadcast core network interwork over defined interfaces to enable convergence layer 3. This enables improvements of broadcast physical layer for physics of broadcast. The 5G unicast physical layer is enhanced for physics of unicast, and then both are converged at layer 3. This is novel and has many benefits compared to the legacy LTE broadcast method (e.g., Evolved Multimedia Broadcast Multicast Services (eMBMS)), which combines both broadcast and unicast into a single shared LTE frame at layer 1. The eMBMS method is then improved for dominate unicast mode in shared L1 frame. The result is the broadcast performance and efficiency in eMBMS are less than optimal.

Abstract: A signal sending method, a signal receiving method, and an apparatus are provided. The method includes: generating, by a terminal device, a first symbol group that carries a first preamble, where the first symbol group includes four groups of symbols; and sending, by the terminal device, the first symbol group to a network device in K groups of uplink subframes, where any two groups of uplink subframes in the K groups of uplink subframes are not adjacent, each group of uplink subframes in the K groups of uplink subframes include at least one uplink subframe, and uplink subframes included in the group of uplink subframes are continuous subframes, where K is a positive integer greater than 1 and less than or equal to 4.

Abstract: The disclosure relates to an electronic device and a wireless communication method in a wireless communication system. According to the disclosure, the electronic device comprises one or more processing circuits. The processing circuit is configured to execute the following operation: configure timing mapping information between a downlink subframe carrying uplink scheduling grant signaling and an uplink subframe carrying uplink transmission, comprising physical uplink shared channel PUSCH transmission, scheduled by the uplink scheduling grant signaling, and performed on an unlicensed channel by user equipment in the wireless communication system. By means of the electronic device and the wireless communication method in the disclosure, a timing mapping relationship between a downlink subframe carrying uplink scheduling grant signaling and an uplink subframe carrying uplink transmission comprising PUSCH transmission can be determined, thereby realizing effective utilization of an unlicensed channel.

Abstract: A method and device of transmitting a downlink control channel, a method and device of detecting and receiving a downlink control channel are provided. The method includes: determining a blind detection period parameter of the downlink control channel; and transmitting the downlink control channel based the blind detection period parameter of the downlink control channel.

Abstract: In wireless communication, uplink communication by a wireless communication system user equipment may include providing data packets by a data source in the user equipment, detecting a pattern relating to uplink transmission of the plurality of data packets, and scheduling transmission of the plurality of data packets by the user equipment. One or more aspects of scheduling transmission of the plurality of data packets may be based on the detected pattern.