ACK/NACK signals for next generation LTE devices and systems

    公开(公告)号:US10560229B2

    公开(公告)日:2020-02-11

    申请号:US15574681

    申请日:2015-12-18

    Abstract: Devices and methods of providing symmetric UL and DL ACK/NACKs is generally described. UL ACK/NACKs of different UEs are multiplexed and received by a UE with a PUSCH. The receiving UE in response transmits the DL ACK/NACK. The ACK/NACK may be transmitted in a localized or distributed manner among subbands that may be adjacent or each may have blocks separated by blocks of a different subband. The ACK and NACK may use independent resources or the NACK may not be transmitted on the single ACK/NACK resource, the lack of an ACK serving as a NACK. The ACK/NACK may be transmitted using a beamforming weight shaped by the received PUSCH/PDSCH. The ACK/NACK symbol may be located in the first symbol, adjacent to the PUSCH/PDSCH, or at the end of a TTI. If adjacent, the UL grant or UL assignment may indicate whether the ACK/NACK resource is used by the PUSCH/PDSCH.

    Low latency contention based scheduling request

    公开(公告)号:US10555322B2

    公开(公告)日:2020-02-04

    申请号:US15575320

    申请日:2015-12-24

    Abstract: Technology for decreasing latency for contention based scheduling request (SR) transmission is disclosed. A user equipment (UE) can process, for transmission to an enhanced node B (eNB), a DeModulation Reference Signal (DM-RS) that is randomly selected from a set of configured DM-RS sequences or configured by the eNB. The UE can select an SR transmission resource as a function of a DM-RS sequence index or cell identification (ID) based on a predefined mapping rule. The UE can process, for transmission to the eNB, a SR message having a buffer status report (BSR) and UE identification (UE-ID) information on the selected SR transmission resource.

    EVOLVED NODE-B AND USER EQUIPMENT AND METHODS FOR OPERATION IN A COVERAGE ENHANCEMENT MODE

    公开(公告)号:US20200037278A1

    公开(公告)日:2020-01-30

    申请号:US16538823

    申请日:2019-08-13

    Abstract: Embodiments of an eNB to operate in accordance with a coverage enhancement mode are disclosed herein. The eNB may comprise hardware processing circuitry to, during a legacy sub-frame, transmit a system information block (SIB) in legacy SIB frequency resources according to a legacy SIB transmission format and refrain from transmission of channel state information reference signals (CSI-RS). The hardware processing circuitry may be further to, during a first coverage enhancement sub-frame, transmit a first portion of the SIB in first SIB frequency resources included in the legacy SIB frequency resources. The hardware processing circuitry may be further to, during a first coverage enhancement sub-frame, transmit a first set of CSI-RS in first CSI-RS frequency resources that include at least a portion of the legacy SIB frequency resources.

    Device, system and method employing unified flexible 5G air interface

    公开(公告)号:US10548129B2

    公开(公告)日:2020-01-28

    申请号:US15542716

    申请日:2015-08-11

    Abstract: An eNodeB (eNB), user equipment (UE) and method of providing a flexible Radio Access Technology (FRAT) are generally described. The information (resource allocation, partition information and numerology) of at least one of a plurality of RATs used by the eNB is provided to a UE. Each RAT has a flexible subcarrier spacing and symbol duration, which are integer multiples of a base subcarrier spacing and symbol duration, and is associated with at least one of different temporal and frequency resources. The symbol and/or frame structure of each RAT are independent. A Transmission Time Interval (TTI) boundary between the RATs is common, and the RATs comprise a common reference TTI duration. The information of the RATs is provided either via a different RAT than the RAT used by the UE for communication or via a dedicated carrier in the RAT used by the UE for communication.

    SCHEDULING AND HYBRID AUTOMATIC REPEAT REQUEST OPERATION FOR CARRIER AGGREGATION WITH MIXED NUMEROLOGIES

    公开(公告)号:US20200022175A1

    公开(公告)日:2020-01-16

    申请号:US16465530

    申请日:2018-03-22

    Abstract: An apparatus of a base station, system and method. The apparatus includes a memory and processing circuitry configured to: determine a physical downlink control channel (PDCCH) on a first component carrier; encode a first signal to be transmitted on the PDCCH, the first signal including downlink control information (DCI) on resources for a second signal to be transmitted on a second component carrier, wherein the DCI is based on a predetermined numerology, and wherein respective numerologies of the first component carrier and the second component carrier are different from one another. The processing circuitry is further to cause transmission of the first signal on the PDCCH, wherein a receiver of the second signal is to process the second signal based on the control information in the first signal.

    RESOURCE MAPPING AND MULTIPLEXING OF UPLINK CONTROL CHANNEL AND UPLINK DATA CHANNEL

    公开(公告)号:US20190335449A1

    公开(公告)日:2019-10-31

    申请号:US16476040

    申请日:2018-02-06

    Abstract: Described is an apparatus of a User Equipment (UE). The apparatus may comprise a first circuitry, a second circuitry, and a third circuitry. The first circuitry may be operable to process a Physical Downlink Control Channel (PDCCH) within a bandwidth at a start of a slot. The second circuitry may be operable to allocate a Guard Period (GP) within the bandwidth and subsequent to the PDCCH. The third circuitry may be operable to generate a Physical Uplink Control Channel (PUCCH) within the bandwidth and in one or more Orthogonal Frequency-Division Multiplexing (OFDM) symbols at the end of the slot. The third circuitry may also be operable to generate a Physical Uplink Shared Channel (PUSCH) within the bandwidth and in one or more OFDM symbols extending between the GP and the PUCCH, the PUSCH being time-division multiplexed with the PUCCH.

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