In an embodiment, a method includes: wirelessly transmitting power using a transmitter LC tank to a wireless power receiver having a receiver LC tank; receiving a first received power packet from the wireless power receiver, the first received power packet including a received power value field indicative of a power level; determining a first power difference between transmitted power and received power based on the first received power packet; calculating a first received power compensation factor based on the first power difference; interrupting wirelessly transmitting power for a first slot period after receiving the first received power packet; performing a first measurement of a first signal associated with the transmitter LC tank during the first slot period; determining a first Q factor value based on the first measurement; comparing the first Q factor value with a reference Q factor value; and detecting a metallic object based on the comparison.

A user equipment (UE) establishes a connected discontinuous reception cycle including one or more onDurations with a currently camped base station. When the one or more onDurations is scheduled, the UE utilizes an active mode of processing and when the one or more onDurations are not scheduled the UE utilizes a sleep mode of inactivity. The UE receives an indication of a plurality of reference signals that are to be transmitted during a first onDuration, each reference signal is (i) to be included in a transmitter beam and (ii) associated with an uplink resource, receives a plurality of reference signals, each reference signal being associated with one of the transmitter beams, selects one of the plurality of transmitter beams based on measuring the included reference signal and transmits an indication of the selected one of the plurality of transmitter beams on the uplink resource associated with the included reference signal.

Example techniques for data retransmission in systems that do not utilize explicit hybrid automatic repeat request (HARQ) feedback are presented, including an example method (400) by a wireless device (102) that includes starting (402) a timer for a hybrid automatic repeat request (HARQ) process associated with a transport block (TB) transmission (105) by the wireless device (102) to the network node 106). The method (400) includes identifying (404) a HARQ policy (113) for the HARQ process, the HARQ policy (113) governing whether the wireless device (102) is to retransmit the TB or transmit a new TB where no HARQ feedback responsive to the TB transmission (105) is received from the network node (106) before the timer expires. Furthermore, the method (400) includes retransmitting (406) the TB or transmitting the new TB according to the HARQ policy (113) at a next periodic transmission occasion (307) for the HARQ process after the timer expires. Methods at a network node (106) and related apparatuses and computer programs are also presented.

A method, wireless device and network node are disclosed. According to one aspect, a wireless device includes a radio interface configured to obtain a timer value, T, for measuring time elapsed from a start of a semi-persistent scheduled, SPS, uplink, UL, data transmission. The wireless device includes processing circuitry configured to perform an SPS UL data transmission associated with a hybrid automatic repeat request, HARQ, process identification, ID, wherein the HARQ process ID is one of a plurality of HARQ process IDs. The processing circuitry is configured to perform a new data transmission or autonomous retransmission with said HARQ process ID at the next available time for said HARQ process ID after elapsed time T.

This disclosure relates to techniques for performing wireless communications including schedules for multiple communications between a user equipment device (UE) and a base station. Techniques for updating such schedules are disclosed. The update may be explicitly signaled or may be determined implicitly. The UE and the base station may perform communications according to the updated schedule.

This invention aims to appropriately transmit HARQ-ACK in future wireless communication systems. A user equipment includes a reception unit which receives a DL signal, and a control unit which controls transmission of a delivery acknowledgement signal for the DL signal, wherein the reception unit receives information concerning an instruction to transmit the delivery acknowledgement signal and the control unit controls transmission of the delivery acknowledgement signal on the basis of the information concerning the instruction to transmit the delivery acknowledgement signal. The reception unit of the user equipment further receives downlink control information including the information concerning the instruction to transmit the delivery acknowledgement signal.

For example, an apparatus may be configured to cause an Access Point (AP) to transmit a frame over a wireless communication channel, the frame including a field according to a first Physical layer Protocol Data Unit (PPDU) version decodable by a wireless communication (STA) of a first STA type, the field configured to indicate to the STA of the first STA type that the wireless communication channel is to be reserved for a reserved duration; and to communicate a low-overhead PPDU with a STA of a second STA type over the wireless communication channel during a Synchronized Transmit Opportunity (S-TxOP), wherein the S-TxOP is within the reserved duration, wherein the low-overhead PPDU is configured according to a second PPDU version decodable by the STA of the second STA type, the low overhead PPDU including a low-overhead preamble excluding one or more preamble fields of the first PPDU version.

A method, wireless device and network node are disclosed. According to one aspect, a wireless device includes a radio interface configured to obtain a timer value, T, for measuring time elapsed from a start of a semi-persistent scheduled, SPS, uplink, UL, data transmission. The wireless device includes processing circuitry configured to perform an SPS UL data transmission associated with a hybrid automatic repeat request, HARQ, process identification, ID, wherein the HARQ process ID is one of a plurality of HARQ process IDs. The processing circuitry is configured to perform a new data transmission or autonomous retransmission with said HARQ process ID at the next available time for said HARQ process ID after elapsed time T.

A wireless communication apparatus comprising: a frame configuration circuit that generates a transmission frame including DMG beacons, wherein sector ID fields in SSW fields included in the respective DMG beacons indicate one or more transmit sectors used for directional transmissions of the respective DMG beacons, and a field different from the sector ID field included in each DMG beacon indicates whether or not there is quasi-omni transmission; and a transmission wireless circuit that performs, by using the transmit sector indicated by the sector ID field, directional transmission on a first DMG beacon that is included in the DMG beacons and in which the field different from the sector ID field indicates non-quasi-omni transmission and performs quasi-omni transmission on a second DMG beacon that is included in the DMG beacons and in which the different field indicates quasi-omni transmission, in a BTI.

Joint estimation of the framer index and the frequency offset in an optical communication system are described among various other features. A transmitter can transmit data frames using pilot and framer symbols. A receiver can estimate the framer index and frequency offset using the pilot and framer symbols, and identify the beginning of a header portion of a data frame. By identifying the beginning of the header portion of a data frame, the receiver can synchronize, with less error, the data transmitted by the transmitter and the data it received. To further improve the framer index estimation, a lock indicator signal can be generated to signal to other receiver components that the estimated framer indices are reliable. The receiver can determine frequency offset and additional framer index estimations with increased reliability when performed after the lock indicator signal is generated.