Abstract:
Technology for a user equipment (UE) operable to perform reference signal received power (RSRP) measurements in an enhanced Machine Type Communication in an unlicensed spectrum (eMTC-U) system is disclosed. The UE can decode a presence-detection reference signal (PD-RS) received on one or more data channels from a Next Generation NodeB (gNB) in the eMTC-U system. The UE can perform an RSRP measurement using the PD-RS received on the one or more data channels from the gNB. The RSRP measurement can be performed over a selected measurement period and a selected measurement frequency bandwidth.
Abstract:
Downlink transmissions can be generated to schedule one or more Internet of Things (IoT) devices for communication on unlicensed channels via frequency hopping operations / procedures. An evolved NodeB (eNB) or a next generation NodeB (gNB) can perform a listen before talk (LBT) on the unlicensed channels that are scheduled for transmission by at least one of: one or more IoT devices or one or more user equipments (UEs). A preamble or a common physical downlink control channel (CPDCCH) can be transmitted to reserve the unlicensed channels for the IoT devices / UEs. The preamble or the PDCCH can include a duration of the duration to provide notice to other eNBs / gNBs or trigger the IoT devices of a successful LBT corresponding to the unlicensed channels.
Abstract:
Technology for an eNodeB operable to perform physical random access channel (PRACH) transmissions in an unlicensed frequency band, in the context of 3GPP LTE eLAA, i.e. MuLTEfire, is disclosed. The eNodeB can identify a PRACH configuration being utilized by a MuLTEfire system that operates in an unlicensed spectrum. The PRACH configuration can define a number of continuous physical resource blocks (PRBs) in the unlicensed spectrum to be used for PRACH transmissions. The eNodeB can decode a PRACH transmission received from a user equipment (UE) in accordance with the PRACH configuration. The PRACH transmission can include a PRACH preamble that is transmitted using the number of continuous PRBs defined in the PRACH configuration. The eNB configures the performance of Clear Channel Assessment, CCA, before preamble transmission by the UE. In case the uplink transmission frame is configured with short PUCCH, sPUCCH, only a short CCA is configured. Otherwise, for example when the frame allows ePUCCH to be configured, CCA is followed by a self-deferring period.
Abstract:
Technology for a user equipment (UE) configured to operate in a massive multiple-input multiple-output (MIMO) system is disclosed. The UE can establish a source eNodeB connection with a source eNodeB in the massive MMO system. A source UE beam used to communicate with the source eNodeB can be derived from a first antenna array of the UE. The UE can establish a target eNodeB connection with a target eNodeB in the massive MIMO system during a handover of the UE from the source eNodeB to the target eNodeB. A target UE beam used to communicate with the target eNodeB can be derived from the first antenna array of the UE or a second antenna array of the UE. The UE can maintain the source eNodeB connection with the source eNodeB during the handover of the UE from the source eNodeB to the target eNodeB.
Abstract:
Embodiments of a high-efficiency WLAN (HEW) station (STA) and methods for communication between HEW access points (APs) and STAs in a wireless network are generally described herein. In some embodiments, a HEW STA initiates communications with a second STA in the wireless communication network to form a first communication pair with the second STA. The HEW STA can determine a threshold for a maximum percentage of available transmission opportunities (TXOPs) that will be permitted to be shared with another communication pair in the wireless communication network. The HEW STA can initialize a shared count value, based on the threshold, for counting shared TXOPs. The HEW STA can configure a sharing notification message to initiate sharing of a TXOP of the available TXOPs subsequent to receiving the TXOP, based on the shared count value. Other embodiments and methods are also described.
Abstract:
Embodiments of computer-implemented methods, systems, computing devices, and computer-readable media are described herein for monitoring, by a mobile proxy associated with a control system of a cloud radio access network ("C-RAN"), application layer data traffic between the control system and a wireless communication device. In various embodiments, the mobile proxy may, based on the monitoring, facilitate alteration of data plane or control plane processing by the wireless communication device or a remote radio head ("RRH") associated with the C-RAN.
Abstract:
A method to support an asymmetric time-division duplex (TDD) configuration at a macro node in a heterogeneous network (HetNet) is disclosed. The method at the macro node comprises transmitting a half blank subframe (HBS) of a downlink subframe during an uplink subframe of a low power node in the HetNet. An effective transmission range of the macro node can overlap with an effective transmission range of the low power node. The downlink subframe and the uplink subframe can occur on a substantially same carrier frequency. The HBS can have a reduced transmission power during an uplink control channel or a random access channel of the uplink subframe of a mobile device transmission to the low power node.
Abstract:
A physical channel processor on a wireless device and method for precoding for spatial multiplexing in an open-loop multiple-input multiple-output (MIMO) mobile communication system is disclosed. The method comprises the operation of receiving an input vector block from a layer mapper. The input vector block includes user equipment-specific reference signals (UE-RSs) or data in a physical downlink shared channel (PDSCH). The operation of generating a large delay cyclic delay diversity (CDD) vector block from the input vector block using a precoder configured for large delay CDD on an antenna port follows. The data can be resource element mapped with UE-RSs or channel-state information reference signals (CSI-RSs) in a physical resource block (PRB).
Abstract:
Embodiments of a system and method for transmitting data from an access point in a multiple user multiple input multiple output (MU-MIMO) system are provided. A first indication of signal quality (ISQ) is received at the access point from a first station and a second ISQ is received from a second station. The access point sets a first power level and a first modulation and coding scheme (MCS) for transmission of a first aggregated media access control (MAC) protocol data unit (A-MPDU) to the first station as a function of the first ISQ and an amount of payload data corresponding to the first A-MPDU. The access point also sets a second power level and a second MCS for transmission of a second A-MPDU as a function of the second ISQ and an amount of payload data corresponding to the second A-MPDU.
Abstract:
Briefly, a mechanism to performing beam tracking during an exchange of data packets disclosed. A perturbation on a transmit or receive beamforming vector is added for the transmission or reception of each data packet. The perturbation may be a minimum allowed phase rotation.