TWI797072B - FIFTH GENERATION (5G) UPLINK CONTROL INFORMATION (xUCI) REPORT - Google Patents

Abstract

Techniques for generation of fifth generation (5G) Uplink Control Information (xUCI) messages are discussed. One example apparatus comprises a processor configured to process, for each of a plurality of transmit (Tx) beams, a set of channel state information (CSI) reference signal (CSI-RS) signals received over that Tx beam; determine, for each Tx beam, an associated distinct set of CSI parameters that comprises one or more channel quality indicators (CQIs), one or more precoding matrix indicators (PMIs), and a rank indicator (RI) for that Tx beam; generate a CSI report indicating a first set of CSI parameters associated with a first Tx beam and indicating a second set of CSI parameters associated with a second Tx beam; generate a xUCI message comprising the CSI report; and output the xUCI message for transmission to an Evolved NodeB (eNB).

Description

Fifth Generation (5G) Uplink Control Information (xUCI) Report

The present disclosure relates to wireless technologies, more precisely technologies for transmitting uplink control information in fifth generation (5G) systems.

In the traditional Long Term Evolution (LTE) system, the uplink information (UCI) transmitted by the user equipment (UE) can be transmitted via the physical uplink control channel (PUCCH) or the physical uplink shared channel (PUSCH), And it can carry scheduling request, hybrid automatic repeat request (HARQ) acknowledgment (ACK) feedback, and/or channel state information (CSI) feedback.

According to an embodiment of the present invention, a device configured to be used in a user equipment (UE) is specifically proposed, the device comprising: a processor configured to: for a plurality of transmissions (Tx Each of the plurality of Tx beams processes a set of channel state information (CSI) reference signal (CSI-RS) signals received through the Tx beam; A different set of CSI parameters, wherein each set of CSI parameters includes: one or more channel quality indicators (CQI), one or more precoding matrix indicators (PMI) and a level indicator associated with the Tx beam (RI); generating a CSI report indicating a first set of CSI parameters associated with a first Tx beam of the plurality of Tx beams and indicating a second set of CSI parameters two sets of CSI parameters associated with a second Tx beam of the plurality of Tx beams; generating a fifth generation (5G) uplink control information (xUCI) message including the CSI report; and outputting the xUCI message for transmission to an evolved Node B (eNB).

In accordance with another embodiment of the present invention, a non-transitory machine-readable medium containing instructions that, when executed, cause a user equipment (UE) to: transmit (Tx) beams via a plurality of each of them to receive a different set of Channel State Information (CSI) Reference Signal (CSI-RS) signals; a set of CSI parameters is calculated for each of the plurality of Tx beams, wherein each set of CSI parameters is based on Calculated through the different sets of CSI-RS signals received by the Tx beam, wherein each set of CSI parameters includes: one or more channel quality indicators (CQI) associated with the Tx beam, one or more precoding a matrix indicator (PMI) and a rank indicator (RI); selecting a first Tx beam and a second Tx beam among the plurality of Tx beams, wherein the first Tx beam is based at least in part on a first a set of CSI parameters is selected, the first set of CSI parameters is based on the different set of CSI-RS signals received through the first Tx beam, and the second Tx beam is selected based at least in part on a second set of CSI parameters, The second set of CSI parameters is based on the different set of CSI-RS signals received through the second Tx beam; a fifth generation (5G) uplink control information (xUCI) message is generated, which includes instructions for the first a CSI report of the set of CSI parameters and the second set of CSI parameters; and sending the CSI report to an evolved Node B (eNB).

According to yet another embodiment of the present invention, a device configured to be used in an evolved Node B (eNB) is specifically proposed, the device includes: a processor configured to: target one or more each of the transmit (Tx) beams generates a different set of channel state information (CSI) reference signal (CSI-RS) signals associated with the Tx beam; outputs each different set of CSI-RS signals for use in communication with the different transmission of Tx beams associated with a set of CSI-RS signals to a user equipment (UE); processing a CSI report received from the UE via a 5th generation uplink control information (xUCI) message, wherein, The CSI report indicates a first beam index (BI), one or more first channel quality indicators (CQI), one or more first precoding matrix indicators (PMI) associated with a first Tx beam and a first rank indicator (RI), and wherein the CSI report indicates a second BI associated with a different second Tx beam, one or more second CQIs, one or more second PMIs, and a Second RI.

The present disclosure will be described with reference to the accompanying drawing figures, wherein like reference numerals are used to refer to like elements throughout, and wherein the illustrated structures and devices are not necessarily drawn to scale. As used herein, the words "component," "system," "interface" and the like are intended to refer to computer-related entities, hardware, software (eg, when executed) and/or firmware. For example, a component may be a processor (eg, a microprocessor, controller, or other processing device), a processor with a processing device, a controller, an object, an executable, a program, a A program running on a storage device, a computer, a tablet and/or a user device (eg, a mobile phone, etc.). By way of example, an application running on a server and the server may also be a component. One or more components may reside within a program, and a component may be localized on one computer and/or distributed between two or more computers. A set of elements or a set of other components may be described herein, where the word "set" can be interpreted as "one or more".

Still further, these components can be implemented from various computer-readable storage media having various data structures stored thereon, eg, having a module. Components can communicate via local and/or remote processes, such as by having one or more data packets (e.g., via signals) with one component interacting with another component on a local system, distributed system and/or across a network, such as the Internet, local area network, wide area network, or similar network with other systems).

As another example, a component may be a device with a specific function provided by mechanical parts operated by electrical or electronic circuits that are operated by one or more processors executing software applications or firmware applications . The one or more processors may be internal or external to the device and may execute at least part of a software or firmware application. As another example, a component may be a device that provides specific functions through electronic components rather than through mechanical components; electronic components may include one or more processors to execute software and/or firmware, the Software and/or firmware are at least partially responsible for the functionality of the electronic component.

The use of the word instantiate is intended to present concepts in a concrete manner. As used in this application, the word "or" is intended to mean an inclusive "or" rather than an exclusive "or". That is, unless otherwise specified or clear from context, "X employs A or B" is intended to represent any natural inclusive ordering. That is, if X uses; X uses B; or X uses both A and B, then "X uses A or B" is satisfied in any of the foregoing cases. Furthermore, the terms "a" and "an" as used in this application and appended claims should generally be understood to mean "one or more" unless specifically stated otherwise or the context clearly refers to a single form. Furthermore, if the terms "comprise", "include", "have", "have", "with" or their variations are used in the detailed description or claims, these terms are intended to Means inclusiveness in a manner similar to the word "comprising".

As used herein, the word "circuit" may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (shared, dedicated or group) and/or to execute one or more software or Part of, or included in, firmware memory (shared, dedicated, or group), group and logic circuits, and/or other suitable circuit components that provide the described functionality. In some embodiments, the circuitry may be implemented in, or act in conjunction with, circuitry that may be implemented by one or more software or firmware modules. In some embodiments, circuitry may include logic at least partially operable in hardware.

The embodiments described herein may be implemented in a system using any suitable configuration of hardware and/or software. FIG. 1 illustrates, for one example, example components of a user equipment (UE) device 100 . In some embodiments, UE device 100 may include application circuitry 102, baseband circuitry 104, radio frequency (RF) circuitry 106, front end module (FEM) circuitry 108 and one or more antennas 110 coupled at least in part as shown. together.

Application circuitry 102 may include one or more application processors. For example, application circuitry 102 may include one or more single-core or multi-core processor circuits such as but not limited to. The processor(s) may include any combination of general purpose processors and special purpose processors (eg, graphics processors, applications processors, etc.). The processor may be coupled to or include memory/storage, and may be configured to execute instructions stored in the memory/storage to enable various applications and/or operating systems to run on the system run.

Baseband circuitry 104 may include circuitry such as, but not limited to, one or more single-core or multi-core processors. The baseband circuit 104 may include one or more baseband processors and/or control logic to process the baseband signal received from a receive signal path of the RF circuit 106 and may generate a signal for a transmit signal path of the RF circuit 106. baseband signal. The baseband processing circuit 104 can interface with the application circuit 102 to generate and process baseband signals and to control the operation of the RF circuit 106 . For example, in some embodiments, the baseband circuit 104 may include a second generation (2G) baseband processor 104a, a third generation (3G) baseband processor 104b, a fourth generation (4G) baseband processor 104c And/or other baseband processors 104d for other generations that exist, are in development, or will be developed in the future (eg, fifth generation (5G), 6G, etc.). Baseband circuitry 104 (eg, one or more baseband processors 104 a - 104 d ) may handle various radio control functions that enable communication with one or more radio networks via RF circuitry 106 . Radio control functions may include but not limited to signal modulation/demodulation, encoding/decoding, RF frequency shifting, and so on. In some embodiments, the modulation/demodulation circuit of the baseband circuit 104 may include Fast Fourier Transform (FFT), precoding, and/or constellation mapping/demapping functions. In some embodiments, the encoding/decoding circuitry of the baseband circuit 104 may include convolution, tail-biting convolution, turbo, Viterbi and/or low density parity check (LDPC) encoding/decoding functions. Embodiments of modulation/demodulation and encoding/decoding functions are not limited to these examples, and other suitable functions may be included in other embodiments.

In some embodiments, baseband circuitry 104 may include elements of a protocol stack, such as, for example, the Evolved Universal Terrestrial Radio Access Network (EUTRAN) protocol, including, for example, Physical (PHY), Media Access Control (MAC) , Radio Link Control (RLC), Packaging Data Convergence Protocol (PDCP) and/or Radio Resource Control (RRC) elements. A central processing unit (CPU) 104e of the baseband circuit 104 can be configured as a component capable of running a protocol stack for PHY, MAC, RLC, PDCP and/or RRC layer signaling. In some embodiments, the baseband circuit may include one or more audio digital signal processors (DSPs) 104f. Audio DSP 104f may include elements for compression/decompression and echo cancellation, and in other embodiments may include other suitable processing elements. In some embodiments, the components of the baseband circuit may be suitably combined on a single chip, a single chip set, or disposed on the same circuit board. In some embodiments, some or all of the constituent components of the baseband circuit 104 and the application circuit 102 may be implemented together, such as, for example, on a system-on-chip (SOC).

In some embodiments, baseband circuitry 104 may provide for communication compatible with one or more radio technologies. For example, in some embodiments, the baseband circuit 104 may support communication with an Evolved Universal Terrestrial Radio Access Network (EUTRAN) and/or other Wireless Metropolitan Area Networks (WMAN), Wireless Local Area Networks (WLAN), wireless Personal Area Network (WPAN) communications. Radio communications in embodiments where the baseband circuit 104 is configured to support more than one wireless protocol may be referred to as a multi-mode baseband circuit.

RF circuitry 106 may enable communication with a wireless network using modulated electromagnetic radiation through a non-physical medium. In various embodiments, RF circuitry 106 may include switches, filters, amplifiers, etc. to facilitate communication with the wireless network. The RF circuit 106 may include a receive signal path, which may include circuitry for down-converting the RF signal received from the FRM circuit 108 and providing a baseband signal to the baseband circuit 104 . RF circuitry 106 may also include a transmit signal path, which may include circuitry for up-converting the baseband signal provided by baseband circuitry 104, and provide an RF output signal to FEM circuitry 108 for use in transmission.

In some embodiments, the RF circuit 106 may include a receive signal path and a transmit signal path. The receive signal path of the RF circuit 106 includes a mixer circuit 106a, an amplifier circuit 106b and a filter circuit 106c. The transmission path of the RF circuit 106 may include a filter circuit 106c and a mixer circuit 106a. The RF circuit 106 may also include a synthesizer circuit 106d for synthesizing a frequency used by the mixer circuit 106a of the receive signal path and the transmit signal path. In some embodiments, the mixer circuit 106a of the receive signal path may be configured to down convert the RF signal received from the FEM circuit 108 based on the synthesized frequency provided by the synthesizer circuit 106d. Amplifier circuit 106b may be a low-pass filter (LPF) or band-pass filter (BPF) configured to remove unwanted signals from the down-converted signal to generate an output baseband signal. The output baseband signal can be provided to the baseband circuit 104 for further processing. In some embodiments, the output baseband signal may be a zero-frequency baseband signal, although this is not required. In some embodiments, the mixer circuit 106a of the receive signal path may comprise a passive mixer, although the scope of the embodiments is not limited in this respect.

In some embodiments, the mixer circuit 106a of the transmit signal path may be configured to upconvert the input baseband signal based on the synthesized frequency provided by the synthesizer circuit 106d to generate an RF output signal for the FEM circuit 108 . The baseband signal may be provided by the baseband circuit 104 and may be filtered by the filter circuit 106c. The filter circuit 106c may include a low pass filter (LPF) although the scope of the present embodiment is not limited in this respect.

In some embodiments, the mixer circuit 106a of the receive signal path and the mixer circuit 106a of the transmit signal path may include two or more mixers and may be combined to perform quadrature down-conversion and/or up-conversion, respectively. In some embodiments, the mixer circuit 106a of the receive signal path and the mixer circuit 106a of the transmit signal path may include two or more mixers and may be configured for image rejection (eg, Hartley image rejection). In some embodiments, the mixer circuit 106a of the receive signal path and the mixer circuit 106a of the transmit signal path may be configured for down-conversion and/or for up-conversion, respectively. In some embodiments, the mixer circuit 106 a of the receive signal path and the mixer circuit 106 a of the transmit signal path can be configured to perform super-heterodyne operation.

In some embodiments, the output baseband signal and the input baseband signal may be analog baseband signals, although the scope of the embodiments is not limited in this respect. In some alternative embodiments, the output baseband signal and the input baseband signal may be digital baseband signals. In such alternative embodiments, the RF circuit 106 may include analog-to-digital converter (ADC) and digital-to-analog converter (DAC) circuits and the baseband circuit 104 may include a digital baseband interface to communicate with the RF circuit 106 .

In some dual-mode embodiments, a separate radio IC circuit may be provided for processing signals for each frequency spectrum, although the scope of the embodiments is not limited in this respect.

In some embodiments, the synthesizer circuit 106d may be a fractional N synthesizer or a fractional N/N+1 synthesizer, as other types of frequency synthesizers may also be suitable, although the scope of the embodiments is not limited in this respect. For example, the synthesizer circuit 106d may be a delta-sigma synthesizer, a frequency multiplier, or a synthesizer including a phase-locked loop with a frequency divider.

The synthesizer circuit 106d may be configured to synthesize the output frequency for use by the mixer circuit 106a of the RF circuit 106 based on a frequency input and a frequency divider control input. In some embodiments, the combiner circuit 106d may be a fractional N/N+1 combiner.

In some embodiments, the frequency input may be provided by a voltage controlled oscillator (VCO), although this is not required. The frequency divider control input can be provided by the baseband circuit 104 or the application processor 102 depending on the desired output frequency. In some embodiments, the divider control input (eg, N) may be determined by a lookup table based on a channel indicated by the application processor 102 .

The synthesizer circuit 106d of the RF circuit 106 may include a frequency divider, a delay locker (DLL), a multiplexer and a phase accumulator. In some embodiments, the divider can be a dual analog-to-digital divider (DMD) and the phase accumulator can be a digital phase accumulator (DPA). In some embodiments, the DMD can be configured to divide the input signal into N or N+1 (eg, based on implementation) to provide fractional division ratios. In some example embodiments, the DLL may include a set of cascaded, adjustable, delay elements, a phase detector, a charge pump, and a D-type flip-flop. In these embodiments, delay elements can be configured to disrupt the phase of VCO cycles by as many as Nd equal packets, where Nd is the number of delay elements in the delay line. In this way, the DLL provides negative feedback to help ensure that the total delay through the delay line is one VCO cycle.

In some embodiments, the synthesizer circuit 106d can be configured to generate a carrier frequency, while in other embodiments, the output frequency can be a multiple of the carrier frequency (eg, twice the carrier frequency and four times the carrier frequency) and Used in conjunction with quadrature generator and frequency divider circuits to generate multiple signals at a carrier frequency having various phases relative to each other. In some embodiments, the output frequency may be the LO frequency (Flo). In some embodiments, RF circuit 106 may include an IQ/polarization converter.

FEM circuitry 108 may include a receive path signal, which may include circuitry configured to operate on RF signals received from one or more antennas 110, amplify the received signal and provide an amplified version of the received signal to RF circuitry 106 for further processing. The FEM circuitry 108 may also include a transmit signal path, which may include circuitry configured to amplify the signal provided by the RF circuitry 106 for transmission for transmission by one or more of the one or more antennas 110 .

In some embodiments, FEM circuit 108 may include a TX/RX switch to switch between transmit mode and receive mode operation. The FEM circuit may also include a receive signal path and a transmit signal path. The receive signal path of the FEM circuit may include a low noise amplifier (LNA) to amplify the received RF signal and provide the amplified received RF signal as an output (eg, to the RF circuit 106 ). The transmission signal path of the FEM circuit 108 may include a power amplifier (PA) for amplifying the input RF signal (for example, provided by the RF circuit 106) and for generating the RF signal for subsequent transmission (for example, by one or more One or more filters of one or more of the antennas 110)).

In some embodiments, the UE device 100 may include additional components such as, for example, memory/storage, a display, a video camera, sensors, and/or input/output (I/O) interfaces.

Furthermore, although the above example of the device 100 is discussed in the context of a UE device, in various aspects a similar device may be used in conjunction with a base station (BS), such as an evolved node (eNB).

A number of multiple-input and multiple-output (MIMO) techniques can be used in 5G systems to enhance coverage and improve spectral efficiency. In a massive MIMO system, the eNB maintains the number of transmit (Tx) and receive (Rx) beams. UE can report channel state information (CSI) and beam information. Beam information may include Tx beam index and beam reference signal received power (BRS-RP).

If an uplink grant is received, uplink control information (xUCI) can be reported via the 5G physical uplink shared channel (xPUSCH). In various embodiments, techniques may be used to facilitate reporting of xUCI via xPUSCH. Aspects described herein may facilitate xUCI reporting and various aspects such as xUCI reporting context, mechanisms for beam information reporting, eg 5G.

Referring to FIG. 2 , illustrated is a block diagram of a system 200 that facilitates generation of a fifth generation (5G) uplink control information (xUCI) report by a user equipment (UE) according to various aspects described herein. System 200 may include a processor 210 (eg, a baseband processor such as one of the baseband processors discussed in connection with FIG. 1 ), receiver circuitry 220, transmitter circuitry 230, and memory 240 (which may includes any of a variety of storage media and may store instructions and/or data associated with one or more of the processor 210, receiver circuit 220, or transmitter circuit 230). In various aspects, system 200 can be included in a user equipment (UE). As described further below, system 200 may facilitate reception of channel state information (CSI) reference signal (CSI-RS) signals via one or more transmit (Tx) beams and xUCI signals generated based on received SCI-RS signals.

The processor 210 can process the CSI-RS signal received by the receiver circuit 220 . The CSI-RS signals received by the processor circuit may include a different set of CSI-RS signals for each of the plurality of Tx beams. Based on the CSI-RS signal received through each of the plurality of Tx beams, the processor 210 can determine a set of CSI parameters associated with the beam. Each set of CSI parameters determined by processor 210 for a Tx beam may include one or more of the following: At least one channel quality indicator (CQI), at least one precoding matrix indicator (PMI) associated with the Tx beam (eg, a wideband PMI and/or one or more subband differential PMIs, etc.), or for The rank indicator (RI) of this beam.

Based on the different sets of CSI parameters for the nth (e.g., n=2) Tx beam (e.g., the nth best Tx beam based on the set of measured CSI parameters), the processor 210 may generate a CSI report (e.g., as a set of CSI bits) indicating the nth different set of CSI parameters for each nth Tx beam. Depending on the particular CSI report, what is included in the different sets of CSI parameters may vary. Examples of CSI reporting discussed herein may include example wideband CQI reports and subband CQI reports assembled via higher layer signaling such as higher layer configuration subband CQI reports and higher layer configuration subband CQI reports CQI and sub-band PMI report.

Additionally, in some aspects, the processor 210 can process different sets of beam reference signals (BRS) received by the receiver circuit 220 via respective Tx beams of at least a subset of the Tx beams. Based on the set of BRS signals received through a given Tx beam, the processor 210 may determine a BRS received power (BRS-RP) associated with the Tx beam. Depending on the type of signal or message received, processing (e.g., by processor 210, processor 310, etc.) may include one or more of the following: identifying a physical resource associated with the signal/message, detecting the signal/message , the resource element group deinterleaving, demodulation, descrambling and/or decoding.

Processor 210 may generate an xUCI message that includes a CSI report (e.g., that indicates the nth different set of CSI parameters for the nth Tx beam. In some aspects (e.g., when the xUCI message would be transmitted while without data, etc.) xUCI message may also include a BRS-RP report indicating the BRS-RP for x beam (e.g., with x predefined or configured via higher layer signaling). In other aspects, Processor 210 may output BRS-RP reports for transmission by eg MAC (Media Access Control) control elements. Processor 210 may output xUCI messages for transmission to a serving eNB via xPUSCH by transmitter circuit 230. Depends In the type of message or message generated, generation (e.g., by processor 210, processor 310, etc.) may include one or more of the following: generating a set of associated bits (e.g., xUCI bits) which indicate Data of the signal or message (for example, for xUCI messages this may include CSI reports and/or BRS-RP reports), encoding (for example, it may include adding a cyclic redundancy check (CRC) and/or via one or more Turbo codes, low-density parity-check (LDPC) codes, tail-biting convolutional codes (TBCC), etc.), scrambling (e.g., based on a scrambling seed), modulation (e.g., via binary phase shift keying ( BPSK), Quadrature Phase Shift Keying (QPSK), or some Quadrature Amplitude Modulation (QAM), etc.) and/or resource mapping (e.g., to the A set of time and frequency resources).

An example of wideband CQI reporting may include, for each nth (eg, n=2) beam: a beam indicator (BI) (eg, indicated via 3 bits), wideband CQI (eg, via 4 bits), a PMI (eg, indicated via 2N bits for class 1 or N bits for class 2, where N can be predefined or via higher layers and signaling and/or or based on system bandwidth, etc.) and an RI (eg, indicated via 1 bit). In some aspects, the wideband CQI report may include, in order: BI for the first Tx beam of the nth Tx beam, wideband CQI, PMI and RI, the first Tx beam for the nth Tx beam BI, wideband CQI, PMI and RI, etc. for the two Tx beams; to BI, wideband CQI, PMI and RI for the nth Tx beam for the nth Tx beam. In an aspect, the wideband CQI report may contain a sequence of bits in the order indicated herein, e.g., starting with the first bit of the BI of the first Tx beam and ending with the RI of the nth Tx beam A bit ends. In some of these aspects, the PMI may be in increasing order of subband indices (or an alternative order, eg, decreasing order of subband indices) and the number of bit fields may range from most significant bit (MSB) to Least significant bit (LSB) (or alternatively, LSB to MSB).

An example of higher layer configuration sub-band CQI reporting may include, for each n-th (eg, n=2) beam: BI (eg, indicated via 3 bits), wideband CQI (eg, via 4 bits bits), a sub-band differential CQI (eg, indicated via 2N bits, with N described here), PMI (eg, indicated via 2 bits for class 1 or via 1 bit for class 2 bits to indicate, and an RI (eg, indicated via 1 bit). In some aspects, higher layer configuration sub-band CQI reports may include, in order: BI for the first Tx beam, wideband CQI, one or more subband differential CQI, PMI and RI, BI for the second Tx beam of the nth Tx beam, wideband CQI, one or more subband differential CQI, PMI, and RI, etc.; BI, wideband CQI, one or more sub-band differential CQI, PMI, and RI to the nth Tx beam for the nth Tx beam. In the aspect, the higher layer configuration The sub-band CQI report may contain a sequence of bits in the order indicated here, eg starting with the first bit of the BI of the first Tx beam and ending with the last bit of the RI of the nth Tx beam. In some of these aspects, the subband CQIs may be in increasing order of subband index (or an alternative order, eg, decreasing order of subband index) and the number of bit fields may be from most significant bit ( MSB) to least significant bit (LSB) (or alternatively, LSB to MSB).

An example of higher layer configuration sub-band CQI and sub-band PMI reporting may include for each nth (eg, n=2) beam: BI (eg, indicated via 3 bits), wideband CQI (eg, Indicated via 4 bits), a sub-band differential CQI (eg, indicated via 2N bits to N as described herein), sub-band PMI (eg, indicated via 2N bits for class 1 or Indicated via N bits for level 2, and an RI (eg, indicated via 1 bit). In some aspects, higher layer configuration sub-band CQI and sub-band PMI reports may include, in order: : BI for the first Tx beam of the nth Tx beam, wideband CQI, subband differential CQI, subband PMI and RI, BI for the second Tx beam of the nth Tx beam, wideband CQI, sub-band differential CQI, sub-band PMI and RI, etc.; to BI for the n-th Tx beam of the n-th Tx beam, wideband CQI, sub-band differential CQI, sub-band PMI and RI. In aspect , the higher layer configuration sub-band CQI report and sub-band PMI report may contain a sequence of bits in the order indicated here, e.g. starting with the first bit of the BI of the first Tx beam and starting with the nth The last bit of the RI for the Tx beam ends. In some of these aspects, the subband differential CQI and/or subband PMI may be in order of increasing subband index (or an alternative order, e.g., decreasing order of subband index order) and the number of bit fields may be from most significant bit (MSB) to least significant bit (LSB) (or alternatively, LSB to MSB).

Referring to FIG. 3, illustrated is a block diagram of a system 300 that facilitates receiving xUCI messages including CSI reports at a base station in accordance with various aspects described herein. System 300 may include a processor 310 (eg, a baseband processor such as one of the baseband processors discussed in connection with FIG. 1 ), transmitter circuitry 320, receiver circuitry 330, and memory 340 (which may includes any of a variety of storage media and may store instructions and/or data associated with one or more of the processor 310, the transmitter circuit 320, or the receiver circuit 330). In various aspects, system 300 can be included in an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) Node B (evolved Node B, ENode B, or eNB) or in a wireless communication network other base stations. In some aspects, processor 310, transmitter circuit 320, receiver circuit 330, and memory 340 may be included in a single device, while in other aspects they may be included in different devices, such as Part of a decentralized architecture. As described further below, system 300 can facilitate processing of xUCI messages received from a UE indicating CSI associated with one or more Tx beams.

Processor 310 may generate different sets of CSI-RS signals for each of the one or more Tx beams, and may output different sets of CSI-RS signals to transmitter circuit 320 for transmission via the associated Tx beam to a UE.

The processor 310 can process an xUCI message received by the receiver circuit 330 from the UE. The xUCI may contain a CSI report (and optionally a BRS-RP report) that indicates a different set of CSI parameters for each of the nth Tx beams (eg, n=2, etc.). The nth Tx beam in an aspect may include at least one of the one or more Tx beams transmitted by the transmitter circuit 320, or may not include the one or more Tx beams. Depending on the type of CSI reporting, different sets of CSI parameters for each of the nth Tx beams may vary. As an example, for wideband CQI reporting, each different set of CSI parameters may include BI, wideband CQI, PMI, and RI for the Tx beam associated with that set of CSI parameters; for higher layer configuration (e.g., by processor 310 Generated higher layer signaling, etc.) sub-band CQI report, each different set of CSI parameters may include BI, wideband CQI, one or more sub-band differential CQI, PMI and RI for the Tx beam associated with the set of CSI parameters; for Higher layer configuration (e.g., higher layer signaling generated by processor 310, etc.) sub-band CQI and PMI reporting, each different set of CSI parameters may include BI, wideband CQI, One or more sub-band differential CQIs, one or more sub-band differential PMIs and RIs, etc.

In some aspects, processor 310 can determine some or all transmit parameters for the nth Tx beam, which can be determined based at least in part on a different set of CSI parameters associated with that Tx beam.

The following discussion provides specific examples of CSI reports that may be generated at the UE or processed at the eNB along with the various aspects described herein.

In various aspects, for wideband CQI reporting, the UE may report CSI for the two best beams measured from the CSI-RS received by the eNB. The UE may report the following information in the wideband CQI report: BI for beam 1; wideband CQI, PMI and RI for beam 1; BI for beam 2; wideband CQI, PMI and RI for beam 2. Table 1 below shows the corresponding bit widths of fields and examples of CQI feedback for wideband reporting of xPDSCH (5G Physical Downlink Shared Channel) transmission. N in Table 1 below may be configured by higher layer signaling and/or determined by system bandwidth. Table 1 : Fields for Channel Quality Information Feedback for Wideband CQI Reporting

Table 2 below shows the corresponding bit widths of the fields and examples of the level indication feedback for the wideband CQI report for xPDSCH transmission. Table 2 : Level Indication Fields for Wideband CQI Reporting

The channel quality bits in Tables 1 and 2 can form the bit sequence o ₀ , o ₁ , o ₂ , ..., o _0-1 , where o ₀ corresponds to the first bit in the first column in each table element, o ₁ corresponds to the second bit of the first column in each table, and o _0-1 corresponds to the last bit of the first column in each table. The fields of the PMI may be in increasing order of subband index. The first bit of each field corresponds to the MSB for that field and the last bit may correspond to the LSB for that field.

In various aspects, CQI reporting is configured for higher layers, UE may report CSI for the two best beams measured from CSI-RS. The UE may report the following information: BI for beam 1, sub-band CQI and PMI for beam 1, RI for beam 1, BI for beam 2, sub-band CQI and PMI for beam 2, and RI for beam 2. Table 3 below shows the corresponding bit widths of fields and examples of channel quality information feedback for the higher layer configuration report of xPDSCH transmission. Table 3 : Fields for Channel Quality Information Feedback for Higher Layer Configuration Subband CQI Reporting

Table 4 below shows the corresponding bit widths of the fields and examples of the channel quality information feedback for the higher layer configuration report for xPDSCH transmission in sub-band PMI/RI report configuration. Table 4 : Fields for Channel Quality Information Feedback for Higher Layer Configuration Subband CQI and Subband PMI Reports

Table 5 below shows the corresponding bit width of fields and examples for higher layer configuration sub-band CQI report or higher layer configuration sub-band CQI and sub-band PMI report level indication feedback for xPDSCH transmission. Table 5 : Fields for Higher Layer Configuration Subband CQI Reporting or Level Indication Feedback for Higher Layer Subband CQI and Subband PMI Reporting

The channel quality bits in Tables 3, 4 and 5 can form bit sequences o ₀ , o ₁ , o ₂ , ..., o _0-1 , o ₀ corresponds to the first column in the first column of each table The units bit, o ₁ corresponds to the second bit of the first column in each table, and o _0-1 corresponds to the last bit of the first column in each table. The fields of PMI and sub-band differential CQI may be in increasing order of sub-band index. The first bit of each field corresponds to the MSB for that field and the last bit may correspond to the LSB for that field.

In various aspects, the BRS-RP for x beams can be reported by a UE to the eNB via xPUSCH when triggered, where x can be provided by higher layer signaling or predefined in the specification. BRS-RP can be reported as a MAC control element. Alternatively, BRS-RP can be reported as a component of xUCI, eg, when xUCI is sent without data.

Referring now to FIG. 4 , illustrated is a flowchart of a method 400 that facilitates CSI reporting based on CSI-RS signals received at a UE via a plurality of Tx beams in accordance with various aspects described herein. In some aspects, method 400 can be performed at a UE. In other aspects, a machine-readable medium may store instructions associated with the method 400 that, when executed, cause the UE to perform the actions of the method 400 .

At 410, different sets of CSI-RS signals can be received through each of the plurality of Tx beams.

At 420, a different set of CSI parameters can be calculated for each of the plurality of Tx beams based on the CSI-RS received via the corresponding Tx beam. Depending on the embodiment, the different set of CSI parameters for each Tx beam may include one or more of the following: a wideband CQI, one or more subband differential CQI, PMI, one or more subband PMI or RI.

At 430, the nth Tx beam (eg, n=2) may be selected from the plurality of Tx beams to report CSI parameters to the eNB. The nth Tx beam may be selected based on a different set of CSI parameters associated with the nth Tx beam (eg, the nth beam with the best channel quality, etc.).

At 440, an xUCI message including a CSI report indicating an nth set of CSI parameters associated with an nth Tx beam can be generated. In some aspects (eg, if xUCI would be sent without data) xUCI messages may also include BRS-RP reports generated as described herein.

At 450, a CSI report can be sent to an eNB (eg, via xPUSCH).

Referring now to FIG. 5 , illustrated is a flowchart of a method 500 that facilitates reception of xUCI messages including CSI reports by a base station via xPUSCH in accordance with various aspects described herein. In some aspects, method 500 can be performed at an eNB. In other aspects, a machine-readable medium may store instructions associated with the method 500 that, when executed, cause the eNB to perform the actions of the method 500 .

At 510, a different set of CSI-RS signals can be generated for each of the one or more Tx beams.

At 520, different sets of CSI-RS signals can be sent to a UE via associated Tx beams.

At 530, an xUCI message can be received from the UE, wherein the xUCI report can include a CSI report indicating an nth set of CSI parameters associated with a different Tx beam. In various aspects, depending on the type of CSI report, the CSI parameter set may include one or more of the following: a wideband CQI, one or more sub-band differential CQI, PMI, one or more sub-band PMI or RI. In some aspects, the xUCI message may also include a BRS-RP report.

Alternatively, based on the received set of CSI parameters, transmission characteristics or parameters associated with one or more of the n Tx beams may be determined.

Examples herein may include subject matter such as a method, means for performing an action or a block, at least one machine-readable medium containing executable instructions when executed by a machine (e.g., a processor with memory, a specific Application of integrated circuits (ASICs), field programmable gate arrays (FPGAs) or the like) to cause the machine to perform actions according to the method of the described embodiments and examples, or devices or synchronization using multiple communication technologies Communication system.

Example 1 is an apparatus configured for use in a user equipment (UE), the apparatus comprising: a processor configured to: process transmission (Tx) beams for each of a plurality of transmit (Tx) beams through A set of channel state information (CSI) reference signal (CSI-RS) signals received by the Tx beam; determining for each of the plurality of transmit (Tx) beams a different set of CSI parameters associated with the Tx beam , wherein each set of CSI parameters includes: one or more channel quality indicators (CQI), one or more precoding matrix indicators (PMI) and a level indicator (RI) associated with the Tx beam; generate a CSI report indicating a first set of CSI parameters associated with a first Tx beam of the plurality of Tx beams and a second set of CSI parameters associated with the associating with a second Tx beam of the plurality of Tx beams; generating a fifth generation (5G) uplink control information (xUCI) message including the CSI report; and outputting the xUCI message for use in an evolution transmission by a single Node B (eNB).

Example 2 includes the subject matter of any variation of Example 1, wherein the first set of CSI parameters includes a first wideband CQI associated with the first Tx beam and the second set of CSI parameters includes a CQI associated with the second Tx beam. associated with a second wideband CQI.

Example 3 includes any variation of Example 2, wherein the CSI report indicates the first wideband CQI and the second wideband CQI via four bits respectively.

Example 4 includes the subject matter of any variation of any one of Examples 1 to 3, wherein the CSI report is a wideband CSI report.

Example 5 includes the subject matter of any variation of Example 4, wherein the CSI report indicates a first BI, a first wideband CQI, a first PMI, and a first RI associated with the first Tx beam, and indicates A second BI, a second broadband CQI, a second PMI and a second RI associated with the second Tx beam.

Example 6 includes the subject matter of any variation of Example 5, wherein the CSI report indicates the first PMI and the second PMI via 2N bits each when a class 1 transmission is received via an associated Tx beam, And when the class 2 transmission is received via the associated Tx beam, the first PMI and the second PMI are indicated via N bits each.

Example 7 includes the subject matter of any variation of Example 6, wherein N is assembled via higher layer signaling.

Example 8 includes any variation of Example 6, wherein N is determined based on system bandwidth.

Example 9 includes the subject matter of any variation of any of Examples 1-3, wherein the CSI report is a sub-band CSI report assembled via higher layer signaling.

Example 10 includes the subject matter of any variation of Example 9, wherein the CSI report indicates a first set of subband differential CQIs associated with the first Tx beam and a second set of subbands associated with the second Tx beam Differential CQI.

Example 11 includes the subject matter of any variation of Example 1, wherein the CSI report is a wideband CSI report.

Example 12 includes the subject matter of any variation of Example 1, wherein the CSI report is a sub-band CSI report assembled via higher layer signaling.

Example 13 is a machine-readable medium comprising instructions that, when executed, cause a user equipment (UE) to: receive a different set of channels over each of a plurality of transmit (Tx) beams a status information (CSI) reference signal (CSI-RS) signal; a set of CSI parameters is calculated for each of the plurality of Tx beams, wherein each set of CSI parameters is based on the different set received through the Tx beam The CSI-RS signal is calculated, wherein each set of CSI parameters includes: one or more channel quality indicators (CQI), one or more precoding matrix indicators (PMI) and level indicators associated with the Tx beam (RI); selecting a first Tx beam and a second Tx beam among the plurality of Tx beams, wherein the first Tx beam is selected based at least in part on a first set of CSI parameters, the first set of CSI parameters are based on the different set of CSI-RS signals received through the first Tx beam, and the second Tx beam is selected based at least in part on a second set of CSI parameters based on the The different sets of CSI-RS signals received by the two Tx beams; generate a fifth generation (5G) uplink control information (xUCI) message, the message includes indicating the first set of CSI parameters and the second set of CSI parameters a CSI report; and sending the CSI report to an evolved Node B (eNB).

Example 14 includes the subject matter of any variation of Example 13, wherein the first set of CSI parameters includes a first BI, a first wideband CQI, and a first RI associated with the first Tx beam, and wherein the The second set of CSI parameters includes a second BI, a second broadband CQI and a second RI associated with the second Tx beam.

Example 15 includes the subject matter of any variation of Example 13, wherein the CSI report includes a plurality of bits that sequentially indicate a first BI, one or more first Tx beams associated with the first Tx beam A CQI, one or more first PMIs and a first RI, and a second BI associated with the second Tx beam, one or more second CQIs, one or more second PMIs and a second RI.

Example 16 includes the subject matter of any variation of any of Examples 13 to 15, wherein the CSI report is a sub-band CSI report assembled via higher layer signaling.

Example 17 includes the subject matter of any variation of Example 16, wherein the CSI report indicates a first set of subband differential CQIs associated with different subbands of the first Tx beam and associated with different subbands of the second Tx beam A second set of sub-band differential CQIs associated.

Example 18 includes the subject matter of any variation of Example 16, wherein the CSI report indicates one or more first sub-band differential CQIs and one or more second sub-band differential CQIs in order of increasing sub-band index.

Example 19 includes the subject matter of any variation of Example 16, wherein the CSI report indicates one or more first subband PMIs associated with different subbands of the first Tx beam and associated with different subbands of a second Tx beam The associated one or more second sub-band PMIs.

Example 20 includes the subject matter of any variation of any one of Examples 13 to 15, wherein the CSI report is a wideband CSI report.

Example 21 includes the subject matter of any variation of any of Examples 13 to 15, wherein the xUCI message includes a beam reference signal (BRS) received power (BRS-RP) report indicating An associated BRS-RP for each of these, wherein each of the associated BRS-RPs is calculated based on a set of BRS received via the associated Tx beam.

Example 22 includes the subject matter of any variation of Example 21, wherein the number of BRS-RPs indicated in the BRS-RP report is assembled via higher layer signaling.

Example 23 includes the subject matter of any variation of Example 21, wherein the number of BRS-RPs indicated in the BRS-RP report is predefined.

Example 24 includes the subject matter of any variation of Example 13, wherein the CSI report is a sub-band CSI report assembled via higher layer signaling.

Example 25 includes the subject matter of any variation of Example 13, wherein the CSI report is a wideband CSI report.

Example 26 includes the subject matter of any variation of Example 13, wherein the xUCI message includes a beam reference signal (BRS) received power (BRS-RP) report indicating a associated BRS-RPs, wherein each of the associated BRS-RPs is calculated based on a set of BRSs received via the associated Tx beam.

Example 27 is an apparatus configured for use in an evolved Node B (eNB), the apparatus comprising: a processor configured to: target one or more transmit (Tx) beams each generating a different set of channel state information (CSI) reference signal (CSI-RS) signals associated with the Tx beam; outputting each different set of CSI-RS signals for via association with the different set of CSI-RS signals transmission to a user equipment (UE) made by the Tx beam of the UE; processing a CSI report received from the UE via a fifth-generation uplink control information (xUCI) message, wherein the CSI report indication is related to a A first beam index (BI), one or more first channel quality indicators (CQI), one or more first precoding matrix indicators (PMI) and a first level indication associated with the first Tx beam Symbol (RI), and wherein the CSI report indicates a second BI, one or more second CQIs, one or more second PMIs, and a second RI associated with a different second Tx beam.

Example 28 includes the subject matter of any variation of Example 27, wherein the CSI report is a wideband CSI report.

Example 29 includes the subject matter of any variation of Example 27, wherein the CSI report is a sub-band CSI report generated based at least in part on configuration via higher layer signaling.

Example 30 includes the subject matter of any variation of Example 29, wherein the one or more first CQIs comprise a first wideband CQI and one or more first subband differential CQIs, and wherein the one or more second The CQI includes a second wideband CQI and one or more second sub-band differential CQIs.

Example 31 includes the subject matter of any variation of any of Examples 29 to 30, wherein the one or more first PMIs comprise one or more first subband PMIs, and wherein the one or more second PMIs comprise a or a plurality of second sub-band PMIs.

Example 32 includes the subject matter of any variation of Example 29, wherein the one or more first PMIs comprise one or more first subband PMIs, and wherein the one or more second PMIs comprise one or more second Subband PMI.

Example 33 is an apparatus configured for use in a user equipment (UE), the apparatus comprising: means for receiving configured to transmit via each of a plurality of transmit (Tx) beams receiving a different set of channel state information (CSI) reference signal (CSI-RS) signals; means for processing configured to calculate a set of CSI parameters for each of the plurality of Tx beams, wherein , each set of CSI parameters is calculated based on the different sets of CSI-RS signals received through the Tx beam, wherein each set of CSI parameters includes: one or more channel quality indicators (CQI) associated with the Tx beam , one or more precoding matrix indicators (PMI) and rank indicators (RI); selecting a first Tx beam and a second Tx beam among the plurality of Tx beams, wherein the first Tx beam is selected based at least in part on a first set of CSI parameters based on the different set of CSI-RS signals received through the first Tx beam, and the second Tx beam is based at least in part on a second selected by a set of CSI parameters, the second set of CSI parameters is based on the different set of CSI-RS signals received through the second Tx beam; a fifth generation (5G) uplink control information (xUCI) message is generated, the The message includes a CSI report indicating the first set of CSI parameters and the second set of CSI parameters; and means for sending configured to send the CSI report to an evolved Node B (eNB).

Example 34 includes the subject matter of any variation of Example 33, wherein the first set of CSI parameters includes a first BI, a first wideband CQI, and a first RI associated with the first Tx beam, and wherein the The second set of CSI parameters includes a second BI, a second broadband CQI and a second RI associated with the second Tx beam.

Example 35 includes the subject matter of any variation of Example 33, wherein the CSI report includes bits that sequentially indicate a first BI, one or more first Tx beams associated with the first Tx beam. A CQI, one or more first PMIs and a first RI, and a second BI associated with the second Tx beam, one or more second CQIs, one or more second PMIs and a second RI.

Example 36 includes the subject matter of any variation of any of Examples 33 to 35, wherein the CSI report is a sub-band CSI report assembled via higher layer signaling.

Example 37 includes the subject matter of any variation of Example 36, wherein the CSI report indicates a first set of subband differential CQIs associated with different subbands of the first Tx beam and associated with different subbands of the second Tx beam A second set of sub-band differential CQIs associated.

Example 38 includes the subject matter of any variation of Example 36, wherein the CSI report indicates one or more first sub-band differential CQIs and one or more second sub-band differential CQIs in order of increasing sub-band index.

Example 39 includes the subject matter of any variation of Example 36, wherein the CSI report indicates one or more first subband PMIs associated with different subbands of the first Tx beam and associated with different subbands of a second Tx beam The associated one or more second sub-band PMIs.

Example 40 includes the subject matter of any variation of any one of Examples 33 to 35, wherein the CSI report is a wideband CSI report.

Example 41 includes the subject matter of any variation of any of Examples 33 to 35, wherein the xUCI message includes a beam reference signal (BRS) received power (BRS-RP) report indicating An associated BRS-RP for each of these, wherein each of the associated BRS-RPs is calculated based on a set of BRS received via the associated Tx beam.

Example 42 includes the subject matter of any variation of Example 41, wherein the number of BRS-RPs indicated in the BRS-RP report is assembled via higher layer signaling.

Example 43 includes the subject matter of any variation of Example 41, wherein the number of BRS-RPs indicated in the BRS-RP report is predefined.

Example 44 includes the subject matter of any variation of any one of Examples 1 to 12, wherein the processor is configured to generate the xUCI message, including the processor configured to: generate a message indicative of the CSI report A set of xUCI bits; encoding the set of xUCI bits; scrambling the set of xUCI bits; demodulating the set of xUCI bits; and determining a set of physical resources to map to the set of xUCI bits.

The description of the above exemplary embodiments of the subject disclosure, including what is described in the Abstract, is not intended to be exhaustive or to limit the disclosed embodiments to the particular form disclosed. Although specific embodiments and examples are described herein for illustrative purposes, various modifications are possible that are deemed to fall within the scope of these embodiments and examples, as those skilled in the art will appreciate.

In this regard, while the described subject matter has been described in connection with various embodiments and corresponding drawings, although applicable, it is to be understood that other similar embodiments may be used or that changes and additions to the described embodiments may be used in order to Perform the same, similar, alternative or alternate functions of the disclosed subject matter without departing from it. Accordingly, the disclosed subject matter should not be limited to any single embodiment described herein, but rather should be construed in breadth and scope in light of the appended claims.

Especially with regard to the various functions performed by the components or structures (assemblies, devices, circuits, systems, etc.) described above, the terms used to describe such components (including references to "components") unless otherwise specified, Any component or structure that performs the specified function (eg, is functionally equivalent) to the described component is intended to correspond, even if not structurally equivalent, to performing the exemplary implementations exemplified herein. Furthermore, although a particular feature may be disclosed with respect to only one of several implementations, such feature may be combined with one or more other features of other implementations, as desired and advantageous for any given or particular application.

100‧‧‧User Equipment (UE) Device 102‧‧‧Application Circuit 104‧‧‧Baseband Circuit 104a‧‧‧Second Generation (2G) Baseband Processor 104b‧‧‧Third Generation (3G) Baseband Processor 104c‧‧‧Fourth Generation (4G) Baseband Processor 104d‧‧‧Other Baseband Processor 104e‧‧‧CPU104f‧‧‧Audio Digital Signal Processor (DSP) 106‧‧‧Radio Frequency (RF) Circuit 106a‧‧‧Mixer Circuit 106b‧‧‧Amplifier Circuit 160c‧‧‧Filter Circuit 106d‧‧‧Synthesizer Circuit 108‧‧‧Front-End Module (FEM) Circuit 110‧‧‧Antenna 200, 300‧‧‧System 210, 310‧‧‧processor 220, 330‧‧‧receiver circuit 230, 320‧‧‧transmitter circuit 240, 340‧‧‧memory 400‧‧‧method 410, 420, 430, 440, 450, 500 , 510, 520, 530‧‧‧Process

FIG. 1 is a block diagram illustrating an example user equipment (UE) used in conjunction with various aspects described herein;

2 is a block diagram illustrating a system that facilitates generation of fifth generation (5G) uplink control information (xUCI) reports by a user equipment (UE) according to various aspects described herein ;

3 is a block diagram illustrating a system that facilitates reception of xUCI messages including a channel state information (CSI) report at a base station according to aspects described herein;

4 is a flowchart illustrating an example method that facilitates generating CSI reports based on CSI reference signal (CSI-RS) signals via a plurality of transmit (Tx) beams in accordance with various aspects described herein Received at one of the UEs;

5 is a flowchart illustrating an example method of facilitating reception by a base station of an xUCI message including CSI via a 5G Physical Uplink Shared Channel (xPUSCH) according to various aspects described herein. Report.

400‧‧‧method

410‧‧‧Process

420‧‧‧Process

430‧‧‧Process

440‧‧‧Process

450‧‧‧Process

Claims (11)

An apparatus configured for use in a user equipment (UE), the apparatus comprising: a processor configured to: process for each of a plurality of transmit (Tx) beams transmitted through the Tx beam A set of channel state information (CSI) reference signal (CSI-RS) signals received; for each of the plurality of Tx beams, a corresponding set of CSI parameters associated with the Tx beam is determined, wherein each set of CSI The parameters include: one or more channel quality indicators (CQIs), one or more precoding matrix indicators (PMIs), and a rank indicator (RI) associated with the Tx beam; generating a first set of CSIs indicating a parameters and a CSI report indicating a second set of CSI parameters associated with a first Tx beam of the plurality of Tx beams and the second set of CSI parameters associated with the plurality of Tx beams associated with a second Tx beam in the CSI; generate a fifth generation (5G) uplink control information (xUCI) message including the CSI report; output the xUCI message for use in an evolved Node B (eNB) wherein the first set of CSI parameters includes a first wideband CQI associated with the first Tx beam and the second set of CSI parameters includes a second wideband CQI associated with the second Tx beam; Wherein the CSI report is a sub-band CSI report assembled via higher layer signaling; wherein the CSI report indicates a first set of sub-band differential CQI associated with the first Tx beam and associated with the second Tx beam A second group of sub-band differential CQI; wherein the CSI report indicates a first BI, a first set of sub-band PMI, and a first RI associated with the first Tx beam, and indicates a second BI associated with the second Tx beam, a second set of sub-band PMIs and a second RI; and wherein the CSI report indicates the first set of sub-bands PMI and the second RI via 2N bits each when a level 1 transmission is received via the associated Tx beam set of sub-band PMIs, and each indicate the first set of sub-band PMIs and the second set of sub-band PMIs via N bits when a class 2 transmission is received via the associated Tx beam, where N is based on the system bandwidth . The apparatus of claim 1, wherein the CSI report indicates the first wideband CQI and the second wideband CQI via four bits respectively. The apparatus of claim 1, wherein N is configured via higher layer signaling. A non-transitory machine-readable medium comprising instructions that, when executed, cause a user equipment (UE) to: receive a corresponding set of channel state information via each of a plurality of transmit (Tx) beams (CSI) reference signal (CSI-RS) signal; a set of CSI parameters is calculated for each of the plurality of Tx beams, wherein each set of CSI parameters is based on the corresponding set of CSI-RS received through the Tx beam RS signal to calculate, wherein each set of CSI parameters includes: one or more channel quality indicators (CQI), one or more precoding matrix indicators (PMI) and a class indicator ( RI); selecting a first Tx beam and a second Tx beam among the plurality of Tx beams, wherein the first Tx beam is selected based at least in part on a first set of CSI parameters, the first set of CSI parameters is based on the corresponding set of CSI-RS signals received through the first Tx beam, and the The second Tx beam is selected based at least in part on a second set of CSI parameters based on the corresponding set of CSI-RS signals received through the second Tx beam; generating a fifth generation (5G) an uplink control information (xUCI) message, the message including a CSI report indicating the first set of CSI parameters and the second set of CSI parameters; and sending the CSI report to an evolved Node B (eNB); wherein the first set a set of CSI parameters comprising a first wideband CQI associated with the first Tx beam, and the second set of CSI parameters comprising a second wideband CQI associated with the second Tx beam; wherein the CSI report is a sub-band CSI report assembled via higher layer signaling; wherein the CSI report indicates a first set of sub-band differential CQIs associated with the first Tx beam and a second set of sub-band differential CQIs associated with the second Tx beam sub-band differential CQI; wherein the CSI report indicates a first BI, a first set of sub-band PMI, and a first RI associated with the first Tx beam, and indicates a first RI associated with the second Tx beam two BIs, a second set of sub-band PMIs, and a second RI; and wherein the CSI report indicates the first set of sub-bands PMI and a second RI via 2N bits each when a level 1 transmission is received via the associated Tx beam The second set of sub-band PMIs, and each indicates the first set of sub-band PMIs and the second set of sub-bands PMIs via N bits when a class 2 transmission is received via the associated Tx beam, where N is based on System bandwidth. The machine-readable medium of claim 4, wherein the CSI report includes a plurality of bits, and the bits indicate in sequence a first BI, one or more first CQIs associated with the first Tx beam, One or more first PMIs and a first RI, and a second BI, one or more second CQIs, one or more second PMIs and a second RI associated with the second Tx beam. The machine-readable medium of claim 4, wherein the CSI report indicates the one or more first sub-band differential CQIs and the one or more first sub-band differential CQIs in order of increasing sub-band index Two sub-band differential CQI. The machine-readable medium of claim 4, wherein the CSI report indicates one or more first sub-band PMIs associated with corresponding sub-bands of the first Tx beam and associated with corresponding sub-bands of the second Tx beam One or more second sub-band PMIs. The machine-readable medium of claim 4, wherein the xUCI message includes a beam reference signal (BRS) received power (BRS-RP) report indicating an associated for each of the one or more Tx beams BRS-RP, wherein each of the associated BRS-RPs is calculated based on a set of BRS received via the associated Tx beam. The machine-readable medium of claim 8, wherein the number of the BRS-RPs indicated in the BRS-RP report is assembled via higher layer signaling. The machine-readable medium of claim 8, wherein the number of the BRS-RPs indicated in the BRS-RP report is predefined. An apparatus configured for use in an evolved Node B (eNB), the apparatus comprising: a processor configured to: generate for each of one or more transmit (Tx) beams and the A corresponding set of channel state information (CSI) reference signal (CSI-RS) signals associated with the Tx beam; outputting each corresponding set of CSI-RS signals for arriving via the Tx beam associated with the corresponding set of CSI-RS signals Transmission by a user equipment (UE); processing a CSI report received from the UE via a fifth generation uplink control information (xUCI) message, wherein the CSI report indicates that it is associated with a first Tx beam A first beam index (BI), one or more first channel quality indicators (CQI), one or more first precoding matrix indicators (PMI) and a first level indicator (RI), and Wherein the CSI report indicates a corresponding second Tx beam associated with a Second BI, one or more second CQIs, one or more second PMIs, and one second RI; wherein the CSI report is a sub-band CSI report assembled via higher layer signaling; wherein the one or more The first CQI includes a first wideband CQI and a first set of sub-band differential CQIs associated with the first Tx beam, and the one or more second CQIs include a first CQI associated with the second Tx beam Two wideband CQIs and a second set of sub-band differential CQIs; wherein the CSI report indicates a first BI, a first set of sub-band PMIs, and a first RI associated with the first Tx beam, and indicates the relationship with the first Tx beam a second BI, a second set of sub-band PMI, and a second RI associated with the second Tx beam; and wherein the CSI report is each 2N bits when the level 1 transmission is received via the associated Tx beam Indicate the first set of sub-band PMI and the second set of sub-band PMI, and each indicate the first set of sub-band PMI and the second set of sub-band PMI via N bits when a class 2 transmission is received via the associated Tx beam Group sub-band PMI, where N is based on the system bandwidth.

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