Abstract: A logical channel data packet transmission method for a user equipment (UE) is provided. The UE includes a processor configured to perform the following instructions. A packet data control protocol (PDCP) packet data unit (PDU) is duplicated to generate a first PDCP PDU and a second PDCP PDU in a PDCP entity. The first PDCP PDU is transmitted to a first radio link control (RLC) bearer. The second PDCP PDU is transmitted to a second RLC bearer. A first RLC PDU is generated in response to the first PDCP PDU in the first RLC bearer. A second RLC PDU is generated in response to the PDCP PDU in the second RLC bearer. The first RLC PDU and the second RLC PDU are received in a medium access control (MAC) entity associated to the first and second RLC bearers.

Abstract: Various aspects described herein relate to techniques for using orthogonal demodulation reference signals (DMRSs) for downlink control channels in wireless communications systems. In an aspect, a method for a user equipment (UE) includes receiving one or more DMRSs over a multi-symbol downlink control channel. The method may further include identifying a time-first control channel element (CCE)-to-resource element group (REG) mapping for the multi-symbol downlink control channel, and identifying an orthogonal DMRS of the one or more DMRSs based on the time-first CCE-to-REG mapping, and decoding the multi-symbol downlink control channel based on at least the identified orthogonal DMRS.

Abstract: A method for communications is disclosed. The method includes determining, at a terminal device, status information of at least one of a first frequency band and a second frequency band. The terminal device is operable in the first frequency band and the second frequency band. The method further includes performing an allocation of multiple antennas of the terminal device between the first frequency band and the second frequency band, based at least in part on the status information.

Abstract: At least a portion of a physical layer (PHY) preamble of a PHY protocol data unit (PPDU) for transmission in a vehicular communication network is generated to span a first bandwidth a) based on a first orthogonal frequency division multiplexing (OFDM) numerology that is defined for a second bandwidth greater than the first bandwidth and b) down-clocked to generate the at least the portion to span the first bandwidth. The at least the portion includes a legacy portion decodable by a legacy device operating in the network. A data portion is generated based on a second OFDM numerology defined to span the second bandwidth. The PPDU is generated to include the at least the legacy portion of the PHY preamble in a first sub-band, a duplicate of the at least the portion of the preamble in a second sub-band, and the data portion that spans the second bandwidth.

Abstract: The disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The disclosure discloses a method and apparatus for reducing overhead of an Ethernet frame, a method and apparatus for efficiently performing a connection resume procedure of a terminal, and a method and apparatus for preventing a loss of data when performing an uplink user data compression procedure.

Abstract: A method performed by a User Equipment (UE) for managing Time Alignment (TA) for Uplink (UL) transmissions between the UE and a network node in a wireless communications network. The network node serves a cell comprising at least a first UL carrier (111) and a second UL carrier (112). The UE is configured (502) with a first TA configuration for the first UL carrier (111) in the cell. The UE is further configured (503) with a second TA configuration for the second UL carrier in the cell. The UE then activates (504) at least one of the first and second TA configuration for the UE.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a plurality regulation requirement parameters corresponding to an unlicensed carrier, where the unlicensed carrier spans at least a portion of a first unlicensed band associated with a first set of regulation requirements and at least a portion of a second unlicensed band associated with a second set of regulation requirements. The UE may identify, from the plurality of regulation requirement parameters, a set of regulation requirement parameters for an uplink transmission based at least in part on whether a set of frequency resources for the uplink transmission overlaps with the first unlicensed band and the second unlicensed band. The UE may transmit the uplink transmission using the set of regulation requirement parameters.

Abstract: A technique may include controlling downlink transmission of an uplink grant for one or more uplink data transmissions by a communication device. The uplink grant identifies one combination from a set of predetermined combinations of one or more transmission time intervals and one or more uplink reference signal transmissions, including at least one combination of two or more transmission time intervals and one or more uplink reference signal transmissions. The technique may also include using the one or more uplink reference signal transmissions of the identified combination to assist the recovery of data from the one or more uplink radio data transmissions by the communication device in the one or more transmission time intervals of the identified combination.

Abstract: Provided are a method for data transmission and apparatus. The method includes: receiving configuration information from a base station, the configuration information indicating whether a data packet deletion function is enabled at a PDCP entity corresponding to a preset data bearer. When the data packet deletion function is enabled, a duration for transmission of SDUs is recorded when the SDUs are transmitted from the PDCP entity corresponding to the preset data bearer to a RLC layer. A first SDU that has not yet been transmitted to the RLC layer is determined from the SDUs in a case that the duration for transmission of the SDUs is longer than a preset duration. The first SDU is deleted.

Abstract: Wireless communications systems and methods related to providing subchannel selection or recommendation and/or channel state information (CSI) for sidelink communications (e.g., operating in mode-1 radio resource allocation (RRA) via a buffer status report (BSR) are provided. A first user equipment (UE) transmits, to a base station (BS), a BSR indicating subchannel information associated with one or more UEs. The UE receives, from the BS in response to the BSR report, a grant for transmitting a first sidelink transmission to a second UE of the one or more UEs. The UE transmits, to the second UE based on the grant, the first sidelink transmission.

Abstract: In a terminal, a signal allocation unit allocates uplink control information including at least one of a response signal responsive to downlink data and an uplink radio resource allocation request signal to a resource for an uplink control channel on the basis of a mode selected from among a plurality of modes relating to the channel configuration of the uplink control channel in accordance with an operating environment of the terminal. A transmitting unit transmits the uplink control information.

Abstract: Embodiments of this disclosure provide a contention window size determining method and apparatus, and relate to the communications field. One method includes: sending, by a first device, one or more data packets to one or more second devices during a reference time unit, wherein the one or more data packets occupy a first subband; receiving, by the first device from the one more second devices, one or more hybrid automatic repeat request-acknowledgements (HARQ-ACKs) corresponding to the one or more data packets; and determining, by the first device, a contention window size of the first subband based on the one or more HARQ-ACKs.

Abstract: The disclosure concerns a communication system where adaptive antenna systems with algorithm are used to provide improved channel selection management in Wireless Local Area Network (WLAN) and other multi-node communication systems. The adaptive antenna systems can be integrated into multiple nodes of a communication network, such as access points used in WLAN, and multiple radiation modes generated and tracked to determine optimal mode for access point to client communication links to assist in channel selection across the nodes in the network. Adaptive antenna system modes are selected and Signal to Noise Ratio (SNR) is measured across available frequency channels to determine channels to assign per access point along with radiation modes to be implemented that results in improved SNR for the communication links established in the network.

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for pilot design for Narrow-Band Internet of Things (NB-IoT). In certain aspects, the method generally includes determining at least one binary code sequence to use as a demodulation reference signal (DMRS) for a channel transmitted across one or more subframes using one or more tones within a resource block (RB) allocated to the UE for narrowband communication, and transmitting the channel including the DMRS using the one or more tones and the determined binary code sequence. In certain aspects, the binary code sequence may be determined based on a binary random sequence, such as pseudo noise (PN) or Gold sequence.

Abstract: To improve utilization efficiency of radio resources in a case that uplink control channels of a plurality of user terminals having different durations and/or starting symbols are multiplexed in the same slot. A user terminal of the present invention includes a transmitting section that transmits uplink control information (UCI) by using an uplink control channel, and a control section that controls a hopping timing of a frequency resource to which the uplink control channel is mapped, based on whether an index of a starting symbol of the uplink control channel is an even number or an odd number and a duration of the uplink control channel.

Abstract: Disclosed are a method for transmitting a reference signal, a network device, and a terminal device. The method comprises: the network device determines target resources for transmitting the reference signal, the target resource being some of transmission resources which can be used for transmitting the reference signal, and the target resources comprising at least one of frequency domain resources, time domain resources, and space domain resources; the network device transmits the reference signal to the terminal device on the target resources. According to the method for transmitting the reference signal, the network device, and the terminal device of embodiments of the present invention, energy saving of the network device can be realized, and meanwhile, interference between cells is avoided.

Abstract: Methods and apparatuses are disclosed for reducing image interference in uplink transmission. In one embodiment, a wireless device (WD) is configured to receive an indication of a resource allocation from the network node; determine an uplink center frequency based at least in part on a center frequency of a resource allocated by the received indication of the resource allocation; and transmit uplink information according to the determined uplink center frequency.

Abstract: A user equipment (UE) may perform multiple searches within a specified search period to locate the wireless band that provides the most throughput. For instance, if the UE finds a low band with time remaining in the search period, the UE continues to search for a higher frequency wireless. In some examples, the UE attempts to locate a high band within a next portion of the search period. If the UE finds the high band, then the UE will use that band since it provides the most throughput of the available bands. If the UE does not find the high band, then the UE searches for a mid-band for another portion of the search time. By prioritizing higher bands over the first available band that is located in the initial search, the UE will connect to the band that provides the best user experience and the most throughput.

Abstract: A method and apparatus are disclosed from the perspective of a network node. In one embodiment, the method includes receiving a resource request to allocate SPS resource from a UE, wherein the resource request indicates a first logical channel. The method also allocating the UE with a first SPS resource and a second SPS resource for the first logical channel and a second logical channel associated with the first logical channel based on the resource request.

Abstract: A terminal apparatus includes: a monitor unit configured to monitor a first PDCCH candidate with aggregation level 8 and a second PDCCH candidate with aggregation level 16 in a CORESET mapped to one OFDM symbol; and a receiver configured to receive a PDSCH, by assuming that a symbol of the PDSCH is mapped to a resource element that is not overlapping the second PDCCH candidate, based on a PDCCH detected in the first PDCCH candidate, the PDCCH scheduling the PDSCH, wherein a CCE that constitutes the first PDCCH candidate and has a lowest index is identical to a CCE that constitutes the second PDCCH candidate and has a lowest index, and a plurality of the CCEs constituting the CORESET each include six contiguous REGs in a frequency domain.