Abstract: Techniques and apparatus for differential channel state information (CSI) reporting for high resolution CSI are provided. One technique includes receiving a CSI reference signal (CSI-RS). First feedback components associated with first CSI feedback for a first CSI feedback stage are determined based on the CSI-RS, and the first feedback components are reported to a base station. Second feedback components associated with at least one second CSI feedback for at least one second CSI feedback stage are determined based in part on the first feedback components, and the second feedback components are reported to the base station. A precoding for multiple input multiple output (MIMO) communications is determined based on the first feedback components and the second feedback components.

Abstract: The present invention discloses a method and an apparatus for channel calibration among multiple RRUs, and pertains to the field of communications technologies. The method includes self-calibrating two RRUs to obtain two self-calibration coefficient, exchanging calibration sequences between the two RRUs through an air interface, returning, by one RRU, the calibration sequence received from another RRU to the another RRU in the air interface, and acquiring a calibration coefficient of the another RRU according to the calibration sequences and the self-calibration coefficients.

Abstract: An apparatus and method for communication including determining an assignment for one of a plurality of symbol durations in a format combination; determining if at least one bit from one or more first upper channels is available if the assignment is associated with the one or more first upper channels and occupying the one of the plurality of symbol durations with the at least one bit, or if unavailable, occupying the one of the plurality of symbol durations with at least one bit from one or more second upper channels or another first upper channel, wherein the first upper channels and the second upper channels are different; and disabling transmission of format information; or including enabling a BTFD hypothesis testing mode; receiving one or more symbol durations on a physical channel; and attempting to decode the received symbol duration with a first hypothesis that a DCCH channel is not transmitted.

Abstract: An apparatus and method for communication including determining an assignment for one of a plurality of symbol durations in a format combination; determining if at least one bit from one or more first upper channels is available if the assignment is associated with the one or more first upper channels and occupying the one of the plurality of symbol durations with the at least one bit, or if unavailable, occupying the one of the plurality of symbol durations with at least one bit from one or more second upper channels or another first upper channel, wherein the first upper channels and the second upper channels are different; and disabling transmission of format information; or including enabling a BTFD hypothesis testing mode; receiving one or more symbol durations on a physical channel; and attempting to decode the received symbol duration with a first hypothesis that a DCCH channel is not transmitted.

Abstract: An apparatus and method for communication including determining an assignment for one of a plurality of symbol durations in a format combination; determining if at least one bit from one or more first upper channels is available if the assignment is associated with the one or more first upper channels and occupying the one of the plurality of symbol durations with the at least one bit, or if unavailable, occupying the one of the plurality of symbol durations with at least one bit from one or more second upper channels or another first upper channel, wherein the first upper channels and the second upper channels are different; and disabling transmission of format information; or including enabling a BTFD hypothesis testing mode; receiving one or more symbol durations on a physical channel; and attempting to decode the received symbol duration with a first hypothesis that a DCCH channel is not transmitted.

Abstract: Certain aspects of the present disclosure provide a method for wireless communications by a UE. The method generally includes sharing a single transmit chain for communication by at least a first RAT and second RAT, determining a tolerable puncturing rate for the first RAT, and providing assistance information, based on the determined tolerable puncturing rate, to a base station of the second RAT to assist the base station in avoiding scheduling transmissions that would lead to conflict with uplink transmissions in the first RAT. Numerous other aspects are provided.

Abstract: The present invention discloses a method and an apparatus for channel calibration among multiple RRUs, and pertains to the field of communications technologies. The method includes self-calibrating two RRUs to obtain two self-calibration coefficient, exchanging calibration sequences between the two RRUs through an air interface, returning, by one RRU, the calibration sequence received from another RRU to the another RRU in the air interface, and acquiring a calibration coefficient of the another RRU according to the calibration sequences and the self-calibration coefficients.

Abstract: Methods, systems, and apparatuses are described for channel estimation in wireless communications. The method, systems, and apparatuses operate in a time-division duplex (TDD) scheme. A first transmission may be received in a first sub-frame of a channel according to the TDD scheme. A time auto-correlation function may be applied to the first transmission to obtain a first auto-correlation sample. At least one characteristic of the channel may be estimated based at least in part on the first auto-correlation sample.

Abstract: An apparatus and method for communication including determining an assignment for one of a plurality of symbol durations in a format combination; determining if at least one bit from one or more first upper channels is available if the assignment is associated with the one or more first upper channels and occupying the one of the plurality of symbol durations with the at least one bit, or if unavailable, occupying the one of the plurality of symbol durations with at least one bit from one or more second upper channels or another first upper channel, wherein the first upper channels and the second upper channels are different; and disabling transmission of format information; or including enabling a BTFD hypothesis testing mode; receiving one or more symbol durations on a physical channel; and attempting to decode the received symbol duration with a first hypothesis that a DCCH channel is not transmitted.