Abstract: Methods, apparatuses, and systems for determining and communicating positioning information in a wireless communication network are provided. For example, a method implemented by a wireless transmit/receive unit (WTRU) includes receiving information indicating a set of position reference signal (PRS) configurations and cluster information. Each PRS configuration is associated with a respective cluster and respective cluster information. The method also includes determining a first location of the WTRU using a first PRS configuration, selecting a cluster that encompasses the first location and is associated with a second PRS configuration, determining a second location of the WTRU based on the second PRS configuration, and transmitting second information indicating the second location of the WTRU and respective cluster information of the selected cluster.

Abstract: A wireless transmit/receive unit (WTRU) may monitor a common physical downlink control channel (PDCCH) search space for a downlink control information (DCI) signal and a first radio network terminal identifier (RNTI). In an example, the DCI signal may include an uplink (UL)/downlink (DL) configuration indication. In a further example, the first RNTI may be associated with UL/DL configuration information. The WTRU may transmit UL data or receive DL data based on the received UL/DL configuration indication. In another example, the DCI may include a plurality of UL/DL configuration indications. In an additional xample, a plurality of WTRUs may monitor the common PDCCH search space for the first RNTI. Also, the UL/DL configuration indication may indicate UL/DL configuration information on a symbol basis. Further, the WTRU may receive a second RNTI which is associated with the UL/DL configuration indication.

Abstract: A wireless transmit/receive unit (WTRU) may receive first measurement indication information indicating an activation of measurement reporting. The WTRU may determine a first set of resource elements (REs) based on the first measurement indication information. Further, the first set of REs may be associated with measurement-related time and frequency resources. Also, the WTRU may receive one or more measurement-related signals in the indicated first set of REs. Additionally, the WTRU may perform a measurement of each measurement-related signal. The WTRU may transmit, based on the first measurement indication information, a measurement report based on the measurement of each measurement-related signal. Further, the WTRU may receive second measurement indication information indicating a deactivation of measurement reporting.

Abstract: Reference signals configured for use with extension carriers and/or carrier segments are described. Reference signals for extension carriers and/or carrier segments may include demodulation reference signals (e.g., user equipment-specific reference signals), cell-specific reference signals, and channel-state information reference signals. Methods, systems and apparatuses for configuring extension carriers and/or carrier segments with one or more of the reference signals (e.g., positioning one or more reference signal symbols in extension carriers and/or carrier segments) are described.

Abstract: Methods, apparatus, systems, architectures and interfaces for receiving system information performed by a wireless transmit receive unit (WTRU) having reduced capacity, are provided.

Abstract: Systems and methods are disclosed for determining a first downlink control indicator (DCI) and a second DCI, determining a set of active aperiodic channel state information reference signals (A-CSI-RSs) based on the first DCI, and determining a subset of the set of active A-CSI-RSs based on the second DCI. A WTRU may perform resource element (RE) muting based on a set of active A-CSI-RSs. A WTRU may perform channel state information (CSI) measurement based on a subset of a set of active A-CSI-RSs.

Abstract: Methods and apparatus for wireless transmit/receive unit (WTRU) power control are described. A method includes receiving a time domain resource allocation (TDRA) list configuration including entries, each including a resource allocation that includes a slot offset value. L1 signaling is received indicating a minimum slot offset value. Downlink control information (DCI) is decoded on a physical downlink control channel in a slot. An index is obtained from the decoded DCI, identifying an entry in the TDRA list. A particular slot offset value identified by the index is retrieved from the TDRA list and compared with the minimum slot offset value. If the particular slot offset value is less than the minimum slot offset value, the entry is invalid. If the particular slot offset value is greater than or equal to the minimum slot offset value, a physical downlink shared channel is received.

Abstract: Methods and apparatus for changing cell range coverage are disclosed. A wireless transmit/receive unit (WTRU) may include circuitry configured to transmit subframes of radio frames using a physical uplink shared channel (PUSCH), where the subframes are divided into first and second sets. The circuitry may include a first power control loop utilized for the first set of subframes and a second power control loop utilized for the second set of subframes. The first power control loop may set transmission power levels for transmission over the PUSCH for the first set of subframes, and the second power control loop may set transmission power levels for transmission over the PUSCH for the second set of subframes. The circuitry may be configured with a first physical uplink control channel (PUCCH) for a first eNodeB and a second PUCCH for a second eNodeB to simultaneously communicate with the first and the second eNodeBs.

Abstract: Systems, methods, and devices for addressing power savings signals in wireless communication. A wireless transmit receive unit (WTRU) may monitor for an energy saving signal (ESS) while the WTRU is asleep (e.g., prior to a discontinuous reception (DRX) ON duration that includes one or more search spaces). The WTRU may measure the energy of the ESS. If the ESS is below a threshold, the WTRU fallback to a default operation or continue in a current operating mode (e.g., remain asleep to save power). If the ESS is above a threshold, the ESS may be received using a coverage enhancement (CE) level based on a parameter associated with a search space. The parameter may be the highest aggregation level of the one or more search spaces.

Abstract: A method performed by a base station includes transmitting configuration information indicating a plurality of physical uplink control channel (PUCCH) resources for transmitting uplink control information (UCI) and one or more thresholds associated with a number of hybrid automatic repeat request (HARQ) bits to be included in the UCI. Each of the plurality of PUCCH resources is associated with at least one PUCCH format and a respective number of orthogonal frequency division multiplexing (OFDM) symbols. The base station transmits a physical downlink control channel (PDCCH) transmission indicating to transmit the UCI. The base station receives a PUCCH transmission that includes the UCI, using one of the PUCCH resources and an associated PUCCH format. The UCI includes a number of HARQ bits that satisfies one of the indicated thresholds, and the PUCCH transmission includes a number of OFDM symbols corresponding to the PUCCH format.

Abstract: A wireless transmit receive unit (WTRU) may receive a set of candidate resources, which may be used for transmission. The WTRU may periodically perform CCA on a channel (e.g., before transmitting on the channel). When the channel is determined to be free, the WTRU may determine a resource for transmission from the candidate resources. The resource may be determined based on the time remaining in the time period. For example, when the time remaining in the time period is shorter, the WTRU may determine to transmit on a resource that comprises more frequency resources. The WTRU may determine a Multiple Input Multiple Output (MIMO) scheme based on the number of frequency resources. The WTRU may send a transmission on the resource, which may include a demodulation reference signal (DM-RS). The DM-RS may indicate the resource used from transmission to a receiver of the transmission.

Abstract: A method and apparatus for supporting communication buffer status reports (BSRs) are disclosed. A wireless device may transmit a first buffer status report (BSR) and a second BSR in a medium access control (MAC) protocol data unit (PDU) to a first base station. In an example, the first BSR may be associated with first data for transmission to the wireless device from at least one wireless transmit/receive unit (WTRU). Also, the second BSR may be associated with second data for transmission to the first base station from the wireless device. Further, the wireless device may receive at least a portion of the first data from the at least one WTRU. Moreover, the wireless device may transmit at least a portion of the second data to the first base station. In a further example, the transmitting the first BSR and the second BSR may be based on a priority associated with the first BSR and a priority associated with the second BSR.

Abstract: A wireless transmit/receive unit (WTRU) may receive a time division duplex (TDD) uplink (UL)/downlink (DL) configuration. Also, the WTRU may receive restriction pattern indication information. The WTRU may determine, based on both the received TDD UL/DL configuration information and the received restriction pattern indication information, one or more time intervals to use for transmitting one or more physical uplink shared channel (PUSCH) repetition transmissions. Further, the WTRU may transmit a PUSCH. Also, the WTRU may transmit at least one PUSCH repetition transmission. In addition, the WTRU may transmit at least one PUSCH repetition transmission in at least one of the determined one or more time intervals to use for transmitting UL repetitions, wherein the at least one PUSCH repetition transmission is a repetition of the PUSCH transmission. In an example, the TDD UL/DL configuration information may be included in a system information block (SIB).

Abstract: A wireless transmit/receive unit (WTRU) may receive downlink control information (DCI) including a downlink grant. Further, the WTRU may receive a downlink transmission scheduled by the downlink grant. Also, the WTRU may determine a start time for an uplink transmission, wherein the uplink transmission includes hybrid automatic repeat request (HARQ)-acknowledgment (ACK) information, wherein the HARQ-ACK information is based on the downlink transmission. In addition, the WTRU may determine an available processing time associated with the HARQ-ACK information. On a condition that the determined start time for the uplink transmission is later than an uplink symbol time that is at least the determined available processing time after the end of a time unit at the end of the downlink transmission, the WTRU may transmit the uplink transmission including the HARQ-ACK information.

Abstract: Methods and systems for transmitting uplink control information in an LTE Advanced system are disclosed. A user device may determine whether uplink control information and/or available channels meet certain criteria and determine whether the uplink control information should be transmitted on a physical uplink control channel, a physical uplink shared channel, or both, based on the criteria. Criteria may include the size of the uplink control information (absolute size or relative to space available on a channel or a threshold value), the type of control information bits, the number of available (i.e., active or configured) component carriers, and the amount of power that may be required to transmit the uplink control information on more than one channel.

Abstract: A method to reserve a directional channel, such as in an unlicensed spectrum for instance, is disclosed. In an example embodiment, the method may be performed by a receiving node, such as a user equipment (UE) for instance. In such method, the receiving node may receive an enhanced directional transmit request message from a transmitting node and transmit an enhanced directional transmit confirmation message using one or more first beams, with at least one first beam being directed in a first direction towards the transmitting node. Further, the receiving node may transmit at least one additional enhanced directional transmit confirmation message using one or more second beams, with at least one second beam being directed in a second direction towards a potentially interfering node. In the method, the second direction is a different direction than the first direction.

Abstract: Systems, methods, and instrumentalities are described herein for enabling positioning, for example, in unlicensed spectrum. A wireless transmit/receive unit (WTRU) may monitor for reference signals (e.g., positioning reference signals) in the unlicensed spectrum. The WTRU may fallback to a different positioning configuration. For example, the WTRU may fallback to monitor for reference signals in the unlicensed spectrum within a discovery reference signal window. For example, the WTRU may fallback to monitor for reference signals in a licensed spectrum. The WTRU may determine to fallback to a different positioning configuration, for example, based on whether reference signals are determined to be missing (e.g., consecutive missing reference signals).

Abstract: Methods and apparatuses are described herein for paging procedures in wireless systems. For example, a wireless transmit receive unit (WTRU) may monitor one or more physical downlink control channels (PDCCHs) for paging resources associated with a first subset of synchronization signal (SS) blocks that corresponds to a first beam tracking area (BTA). On a condition that at least one measurement of at least one beam associated with the first subset of SS blocks is less than a predetermined threshold, the WTRU may transmit, to a base station (BS), a signal indicating a second BTA that is associated with a second subset of SS blocks. The signal includes a physical random access channel (PRACH) resource associated with a second group of SS blocks that corresponds to the second BTA.

Abstract: A wireless transmit/receive unit, WTRU, receives a plurality of positioning reference signals from a plurality of terrestrial transmission points, the positioning reference signals including at least one positioning reference signal from a first terrestrial transmission point and at least one positioning signal from a second terrestrial transmission point, on condition that at least one value based on first measurements of the plurality of positioning reference signals satisfies a condition, transmits a request to initiate, at the WTRU, positioning using positioning reference signals received from satellites, received, in response to the request, information about a set of satellites, selects at least one satellite from the set of satellites, determines a second position estimate for the WTRU based on at least one positioning reference signal received from at least one selected satellite, and sends to a network node a message comprising information indicating the second position estimate for the WTRU.

Abstract: A wireless transmit/receive unit (WTRU) may receive first uplink (UL)-downlink (DL) configuration information indicating a first UL-DL configuration for a first set of physical resource blocks (PRBs), and may receive second UL-DL configuration information indicating a second UL-DL configuration for a second set of PRBs. The second set of PRBs is next to, in frequency, the first set of PRBs. The WTRU may receive a physical downlink shared channel (PDSCH) transmission in a DL direction of first time units in the first set of PRBs, based on the first UL-DL configuration. The WTRU may transmit first acknowledgement (ACK)/negative ACK (NACK) information, based on the PDSCH transmission, in a UL direction of second time units in the second set of PRBs. The UL direction of the one or more second time units is based on the second UL-DL configuration. The second UL-DL configuration is based on the first UL-DL configuration.