CN108476051B

CN108476051B - Fifth generation (5G) uplink control information (xUCI) reporting

Info

Publication number: CN108476051B
Application number: CN201680079505.9A
Authority: CN
Inventors: 张羽书; 昌文婷; 熊岗; 比斯沃尔普·蒙达尔; 朱源
Original assignee: Apple Inc
Current assignee: Apple Inc
Priority date: 2016-02-19
Filing date: 2016-05-18
Publication date: 2022-03-25
Anticipated expiration: 2036-05-18
Also published as: CN108476051A; TWI797072B; TW201731242A; HK1258296A1; WO2017142574A1

Abstract

Techniques for generating a fifth generation (5G) uplink control information (xUCI) message are discussed. One example apparatus includes: a processor configured to: processing, for each of a plurality of transmit (Tx) beams, a set of Channel State Information (CSI) reference signal (CSI-RS) signals received through the Tx beam; for each Tx beam, determining an associated different set of CSI parameters comprising one or more Channel Quality Indicators (CQIs), one or more Precoding Matrix Indicators (PMIs), and a Rank Indicator (RI) for the Tx beam; generating a CSI report indicating a first set of CSI parameters associated with the first Tx beam and indicating a second set of CSI parameters associated with the second Tx beam; generating an xUCI message including a CSI report; and outputting the xUCI message for transmission to an evolved node b (enb).

Description

Fifth generation (5G) uplink control information (xUCI) reporting

Cross Reference to Related Applications

This application claims the benefit of united states provisional application serial No. 62/297,414 entitled UPLINK CONTROL INFORMATION REPORT (UPLINK CONTROL INFORMATION REPORT), filed on month 2, 19 of 2016, the contents of which are incorporated herein by reference in their entirety.

Technical Field

The present disclosure relates to wireless technology, and more particularly, to a technique for transmitting Uplink Control Information (UCI) in a fifth generation (5G) system.

Background

Uplink Control Information (UCI) transmitted by a User Equipment (UE) in a legacy Long Term Evolution (LTE) system may be transmitted through a Physical Uplink Control Channel (PUCCH) or a Physical Uplink Shared Channel (PUSCH), and may carry scheduling requests, hybrid automatic repeat request (HARQ) Acknowledgement (ACK) feedback, and/or Channel State Information (CSI) feedback.

Drawings

Fig. 1 is a block diagram illustrating an example User Equipment (UE) that may be used in conjunction with various aspects described herein.

Fig. 2 is a block diagram illustrating a system that facilitates generating a fifth generation (5G) uplink control information (xUCI) report by a User Equipment (UE) in accordance with various aspects described herein.

Fig. 3 is a block diagram illustrating a system that facilitates receiving an xUCI message including a Channel State Information (CSI) report at a base station in accordance with various aspects described herein.

Fig. 4 is a flow diagram illustrating an example method that facilitates generating a CSI report at a UE based on CSI reference signal (CSI-RS) signals received over multiple transmit (Tx) beams in accordance with various aspects described herein.

Fig. 5 is a flow diagram illustrating an example methodology that facilitates receiving, by a base station, an xUCI message including a CSI report over a 5G physical uplink shared channel (xPUSCH), in accordance with various aspects described herein.

Detailed Description

The present disclosure will now be described with reference to the drawings, 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 terms "component," "system," "interface," and the like are intended to refer to a computer-related entity, hardware, software (e.g., in execution), and/or firmware. For example, a component may be a processor (e.g., a microprocessor, controller, or other processing device), a process running on a processor, a controller, an object, an executable, a program, a storage device, a computer, a tablet, and/or a user device (e.g., a cell phone) with a processing device. By way of illustration, both an application running on a server and the server can be a component. One or more components can reside within a process and a component can 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, wherein the term "a set" may be interpreted as "one or more.

In addition, these components can execute from various computer readable storage media having various data structures stored thereon, such as in modules. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from one component interacting with another component in a local system, distributed system, and/or across a network such as the internet, a local area network, wide area network, or the like with other systems by way of the signal).

As another example, a component may be an apparatus having a particular functionality provided by mechanical portions operated by electrical or electronic circuitry, where the electrical or electronic circuitry may be operated by a software application or firmware application executed by one or more processors. The one or more processors may be internal or external to the apparatus and may execute at least a portion of a software application or a firmware application. As another example, a component may be a device that provides a specific function through an electronic component without using a mechanical part; the electronic components may include one or more processors therein to execute software and/or firmware that at least partially impart functionality to the electronic components.

Use of the word exemplary is intended to present concepts in a concrete fashion. As used in this application, the term "or" is intended to mean an inclusive "or" rather than an exclusive "or". That is, unless specified otherwise, or clear from context, "X employs A or B" is intended to mean any of the natural inclusive permutations. That is, if X employs A; x is B; or X employs both A and B, then "X employs A or B" is satisfied under any of the foregoing circumstances. In addition, the articles "a" and "an" as used in this application and the appended claims should generally be construed to mean "one or more" unless specified otherwise or clear from context to be directed to a singular form. Furthermore, to the extent that the terms "includes," including, "" has, "" containing, "or variants thereof are used in either the detailed description and the claims, these terms are intended to be inclusive in a manner similar to the term" comprising.

As used herein, the term "circuitry" may refer to, may be part of, or may include the following: an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (shared, dedicated, or group) and/or memory (shared, dedicated, or group) that executes one or more software or firmware programs, a combinational logic circuit, and/or other suitable hardware components that provide the described functionality. In some embodiments, the circuitry may be implemented in, or functions associated with, one or more software or firmware modules. In some embodiments, the circuitry may comprise logic operable, at least in part, in hardware.

The embodiments described herein may be implemented as a system using any suitably configured hardware and/or software. Fig. 1 illustrates example components of a User Equipment (UE) device 100 for one embodiment. In some embodiments, the 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 together at least as shown.

The application circuitry 102 may include one or more application processors. For example, the application circuitry 102 may include circuitry such as, but not limited to: one or more single-core or multi-core processors. The processor(s) may include any combination of general-purpose processors and special-purpose processors (e.g., graphics processors, application processors, etc.). The processor may be coupled with and/or may 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.

The baseband circuitry 104 may include circuitry such as, but not limited to: one or more single-core or multi-core processors. Baseband circuitry 104 may include one or more baseband processors and/or control logic to process baseband signals received from the receive signal path of RF circuitry 106 and to generate baseband signals for the transmit signal path of RF circuitry 106. Baseband processing circuitry 104 may interface with application circuitry 102 for generating and processing baseband signals and for controlling the operation of RF circuitry 106. For example, in some embodiments, baseband circuitry 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 processor(s) 104d for other existing generations, generations in development, or generations to be developed in the future (e.g., fifth generation (5G), 6G, etc.). The baseband circuitry 104 (e.g., one or more of the baseband processors 104 a-d) may handle various radio control functions that support communication with one or more radio networks via the RF circuitry 106. The radio control functions may include, but are not limited to: signal modulation/demodulation, encoding/decoding, radio frequency shifting, etc. In some embodiments, the modulation/demodulation circuitry of the baseband circuitry 104 may include Fast Fourier Transform (FFT), precoding, and/or constellation mapping/demapping functions. In some embodiments, the encoding/decoding circuitry of baseband circuitry 104 may include convolution, tail-biting convolution, turbo, Viterbi (Viterbi), and/or Low Density Parity Check (LDPC) encoder/decoder functionality. Embodiments of modulation/demodulation and encoder/decoder 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, e.g., elements of an Evolved Universal Terrestrial Radio Access Network (EUTRAN) protocol, including, for example: physical (PHY), Medium Access Control (MAC), Radio Link Control (RLC), Packet Data Convergence Protocol (PDCP), and/or Radio Resource Control (RRC) elements. A Central Processing Unit (CPU)104e of the baseband circuitry 104 may be configured to run elements of a protocol stack for signaling of the PHY, MAC, RLC, PDCP, and/or RRC layers. In some embodiments, the baseband circuitry may include one or more audio Digital Signal Processors (DSPs) 104 f. The audio DSP(s) 104f may include elements for compression and/or decompression and/or echo cancellation, and may include other suitable processing elements in other embodiments. In some embodiments, components of the baseband circuitry may be suitably combined in a single chip, a single chipset, or suitably arranged on the same circuit board. In some embodiments, some or all of the constituent components of the baseband circuitry 104 and the application circuitry 102 may be implemented together, for example, on a system on a chip (SOC).

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

The RF circuitry 106 may support communication with a wireless network using modulated electromagnetic radiation through a non-solid medium. In various embodiments, the RF circuitry 106 may include switches, filters, amplifiers, and the like to facilitate communication with the wireless network. RF circuitry 106 may include a receive signal path, which may include circuitry to down-convert RF signals received from FEM circuitry 108 and provide baseband signals to baseband circuitry 104. RF circuitry 106 may also include a transmit signal path, which may include circuitry to up-convert baseband signals provided by baseband circuitry 104 and provide RF output signals to FEM circuitry 108 for transmission.

In some embodiments, RF circuitry 106 may include a receive signal path and a transmit signal path. The receive signal path of the RF circuitry 106 may include a mixer circuit 106a, an amplifier circuit 106b, and a filter circuit 106 c. The transmit signal path of the RF circuitry 106 may include a filter circuit 106c and a mixer circuit 106 a. The RF circuitry 106 may also include synthesizer circuitry 106d for synthesizing frequencies for use by the mixer circuitry 106a of the receive signal path and the transmit signal path. In some embodiments, the mixer circuitry 106a of the receive signal path may be configured to down-convert the RF signal received from the FEM circuitry 108 based on the synthesized frequency provided by the synthesizer circuitry 106 d. The amplifier circuit 106b may be configured to amplify the downconverted signal, and the filter circuit 106c may be a Low Pass Filter (LPF) or a Band Pass Filter (BPF) configured to remove unwanted signals from the downconverted signal to generate an output baseband signal. The output baseband signal may be provided to baseband circuitry 104 for further processing. In some embodiments, the output baseband signal may be a zero frequency baseband signal, but this is not required. In some embodiments, 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, mixer circuitry 106a of the transmit signal path may be configured to upconvert the input baseband signal based on a synthesis frequency provided by synthesizer circuitry 106d to generate an RF output signal for FEM circuitry 108. The baseband signal may be provided by the baseband circuitry 104 and may be filtered by the filter circuitry 106 c. Filter circuit 106c may include a Low Pass Filter (LPF), although the scope of the embodiments 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 comprise two or more mixers and may be arranged for 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 arranged for image rejection (e.g., Hartley (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 arranged for direct down-conversion and/or direct up-conversion, respectively. In some embodiments, the mixer circuitry 106a of the receive signal path and the mixer circuitry 106a of the transmit signal path may be configured for super-heterodyne (super-heterodyne) operations.

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 these alternative embodiments, RF circuitry 106 may include analog-to-digital converter (ADC) and digital-to-analog converter (DAC) circuitry, and baseband circuitry 104 may include a digital baseband interface in communication with RF circuitry 106.

In some dual-mode embodiments, separate radio Integrated Circuit (IC) circuits may be provided to process signals for one or more frequency spectrums, although the scope of the embodiments is not limited in this respect.

In some embodiments, synthesizer circuit 106d may be a fractional-N synthesizer or a fractional-N/N +1 synthesizer, although the scope of embodiments is not limited in this respect as other types of frequency synthesizers may be suitable. For example, 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 an output frequency based on the frequency input and the divider control input for use by the mixer circuit 106a of the RF circuit 106. In some embodiments, the synthesizer circuit 106d may be a fractional-N/N +1 type synthesizer.

In some embodiments, the frequency input may be provided by a Voltage Controlled Oscillator (VCO), but this is not required. The divider control input may be provided by either baseband circuitry 104 or application processor 102, depending on the desired output frequency. In some embodiments, the divider control input (e.g., N) may be determined from a look-up table based on the channel indicated by application processor 102.

Synthesizer circuit 106d of RF circuit 106 may include a frequency divider, a Delay Locked Loop (DLL), a multiplexer, and a phase accumulator. In some embodiments, the divider may be a dual-mode divider (DMD) and the phase accumulator may be a Digital Phase Accumulator (DPA). In some embodiments, the DMD may be configured to divide an input signal by N or N +1 (e.g., carry out based) to provide a fractional division ratio. In some example embodiments, a DLL may include a set of cascaded, tunable delay elements, a phase detector, a charge pump, and a D-type flip-flop. In these embodiments, the delay elements may be configured to decompose the VCO period into at most Nd equal phase groups, where Nd is the number of delay elements in the delay line. In this manner, the DLL provides negative feedback to help ensure that the total delay through the delay line is one VCO cycle.

In some embodiments, synthesizer circuit 106d may be configured to generate a carrier frequency as the output frequency, while in other embodiments the output frequency may be a multiple of the carrier frequency (e.g., twice the carrier frequency, four times the carrier frequency), and may be used in conjunction with a quadrature generator and divider circuit to generate multiple signals at the carrier frequency having multiple phases that are different from each other. In some embodiments, the output frequency may be the LO frequency (fLO). In some embodiments, the RF circuitry 106 may include an IQ and/or a polar converter.

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

In some embodiments, FEM circuitry 108 may include TX/RX switches to switch between transmit mode and receive mode operation. FEM circuitry 108 may include a receive signal path and a transmit signal path. The receive signal path of the FEM circuitry may include a Low Noise Amplifier (LNA) to amplify the received RF signal and provide the amplified received RF signal as an output (e.g., to the RF circuitry 106). The transmit signal path of FEM circuitry 108 may include a Power Amplifier (PA) to amplify an input RF signal (e.g., provided by RF circuitry 106), and may include one or more filters to generate an RF signal for subsequent transmission (e.g., by one or more antennas 110).

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

Moreover, while the above example discussion of the apparatus 100 is in the context of a UE device, in various aspects similar apparatus may be employed in connection with a Base Station (BS), such as an evolved node b (enb).

Massive Multiple Input Multiple Output (MIMO) techniques can be employed in 5G systems to enhance coverage and improve spectral efficiency. In massive MIMO systems, an eNB may maintain multiple transmit (Tx) and receive (Rx) beams. The UE may report Channel State Information (CSI) as well as beam information. The beam information may include a Tx beam index and a beam reference signal received power (BRS-RP).

If the uplink grant is received, 5G uplink control information (xUCI) may be reported through a 5G physical uplink shared channel (xPUSCH). In various embodiments, techniques may be employed to facilitate reporting of xUCI over xPUSCH. Aspects described herein may facilitate xUCI reporting and various aspects, e.g., xUCI reporting context, mechanism(s) for beam information reporting, and the like.

Referring to fig. 2, fig. 2 illustrates a block diagram of a system 200 that facilitates generating a fifth generation (5G) uplink control information (xUCI) report by a User Equipment (UE) in accordance with various aspects described herein. System 200 may include a processor 210 (e.g., a baseband processor, such as one of the baseband processors discussed in conjunction with fig. 1), receiver circuitry 220, transmitter circuitry 230, and memory 240 (which memory 240 may include any of a variety of storage media and may store instructions and/or data associated with one or more of processor 210, receiver circuitry 220, or transmitter circuitry 230). In various aspects, system 200 can be included within a User Equipment (UE). As described in more detail below, system 200 can facilitate receiving a Channel State Information (CSI) reference signal (CSI-RS) signal over one or more transmit (Tx) beams and generating an xUCI message based on the received CSI-RS signal. .

Processor 210 may process the CSI-RS signal received by receiver circuitry 220. The CSI-RS signals received by the receiver circuit may include a different set of CSI-RS signals for each of the plurality of Tx beams. Based on the CSI-RS signals received through each of the plurality of Tx beams, processor 210 may 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) (e.g., wideband CQI, and/or one or more subband differential CQIs, etc.) associated with the Tx beam, at least one Precoding Matrix Indicator (PMI) (e.g., wideband PMI, and/or one or more subband differential PMIs, etc.) associated with the Tx beam, or a rank indicator (R1) for the beam.

Based on a different set or sets of CSI parameters for n (e.g., n-2) Tx beams (e.g., n-best Tx beams based on the measured sets of CSI parameters), processor 210 may generate a CSI report (e.g., as a set of CSI bits) indicating the different n sets of CSI parameters for each of the n Tx beams. The different sets of CSI parameters may include different content depending on the particular CSI report. Examples of CSI reporting discussed herein include example wideband CQI reports and subband CQI reports configured by higher layer signaling, e.g., higher layer configured subband CQI reports, and higher layer configured subband CQI and subband PMI reports.

Further, in some aspects, the processor 210 may process a different set of Beam Reference Signals (BRSs) received by the receiver circuit 220 through each of at least a subset of the Tx beams. Based on a 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, the processing (e.g., performed by processor 210, processor 310, etc.) may include one or more of the following: identifying physical resources associated with the signal/message, detecting the signal/message, deinterleaving, demodulating, descrambling, and/or decoding the set of resource elements.

The processor 210 may generate an xUCI message that may include CSI reports (e.g., indicating different n sets of CSI parameters for n Tx beams). In some aspects (e.g., when the xUCI message is to be sent without data, etc.), the xUCI message may also include a BRS-RP report indicating BRS-RPs for the x beams (e.g., where x is predefined or configured through higher layer signaling). In other aspects, the processor 210 may output the BRS-RP report for transmission as a MAC (media access control) control element. Processor 210 may output the xUCI message for transmission by transmitter circuitry 230 to the serving eNB via xPUSCH. Depending on the type of signal or message generated, the generation (e.g., performed by processor 210, processor 310, etc.) may include one or more of the following: generating data indicative of a signal or message (e.g., for an xUCI message, the data may include a CSI report and/or a BRS-RP report) a set of associated bits (e.g., xUCI bits), encoding (e.g., encoding may include adding a Cyclic Redundancy Check (CRC), and/or encoding by one or more of a turbo code, a Low Density Parity Check (LDPC) code, a tail-biting convolutional code (TBCC), etc.), scrambling (e.g., scrambling based on a scrambling seed), modulating (e.g., modulating by one of Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), or some form of Quadrature Amplitude Modulation (QAM), etc.), and/or resource mapping (e.g., mapping to a set of time and frequency resources authorized for uplink transmission of the xUCI report).

For each of n (e.g., n-2) beams, an example wideband CQI report may include: a Beam Indicator (BI) (e.g., indicated by 3 bits), a wideband CQI (e.g., indicated by 4 bits), a PMI (e.g., indicated by 2N bits for rank 1 or N bits for rank 2, where N may be predetermined, or configured by higher layer signaling and/or based on system bandwidth, etc.), and an RI (e.g., indicated by 1 bit). In some aspects, the wideband CQI report may include, in order: BI, wideband CQI, PMI, and RI for a first Tx beam of the n Tx beams; BI, wideband CQI, PMI, and RI for a second Tx beam of the n Tx beams; and so on; up to the BI for the nth of the n Tx beams, wideband CQI, PMI, and RI. In aspects, the wideband CQI report may include 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 last bit of the RI of the nth Tx beam. In some such aspects, the PMI may be in an order of increasing subband index (or an alternative order, e.g., an order of decreasing subband index), and the plurality of bit fields may be in an order of Most Significant Bit (MSB) to Least Significant Bit (LSB) (or alternatively, an order of LSB to MSB).

For each of n (e.g., n-2) beams, an example higher layer configured subband CQI report may include: BI (e.g., indicated by 3 bits), wideband CQI (e.g., indicated by 4 bits), subband differential CQI(s) (e.g., indicated by 2N bits, where N is as described herein), PMI(s) (e.g., indicated by 2 bits for rank 1 or 1 bit for rank 2), and RI (e.g., indicated by 1 bit). In some aspects, the higher layer configured sub-band CQI reports may include, in order: BI for a first Tx beam of the n Tx beams, wideband CQI, one or more subband differential CQIs, PMI, and RI; BI for a second Tx beam of the n Tx beams, wideband CQI, one or more subband differential CQIs, PMI, and RI; and so on; up to the BI for the nth of the n Tx beams, wideband CQI, one or more subband differential CQIs, PMI, and RI. In aspects, the higher layer configured subband CQI reports may include 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 last bit of the RI of the nth Tx beam. In some such aspects, the subband differential CQI(s) may be in an order of increasing subband index (or an alternative order, e.g., an order of decreasing subband index), and the plurality of bit fields may be in an order of MSB to LSB (or alternatively, an order of LSB to MSB).

For each of n (e.g., n-2) beams, an example higher layer configured subband CQI and subband PMI report may include: BI (e.g., indicated by 3 bits), wideband CQI (e.g., indicated by 4 bits), subband differential CQI(s) (e.g., indicated by 2N bits, where N is as described herein), subband PMI(s) (e.g., indicated by 2N bits for rank 1 or N bits for rank 2), and RI (e.g., indicated by 1 bit). In some aspects, the higher layer configured subband CQI and subband PMI reports may include, in order: BI for a first Tx beam of the n Tx beams, wideband CQI, subband differential CQI(s), subband PMI(s), and RI; BI for a second Tx beam of the n Tx beams, wideband CQI, subband differential CQI(s), subband PMI(s), and RI; and so on; up to BI for the nth of the n Tx beams, wideband CQI, subband differential CQI(s), subband PMI(s), and RI. In some aspects, the higher layer configured subband CQI and subband PMI reports may include 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 last bit of the RI of the nth Tx beam. In some such aspects, the subband differential CQI(s) and/or the subband PMI(s) may be in an order of increasing subband index (or an alternative order, e.g., an order of decreasing subband index), and the plurality of bit fields may be in an order of MSB to LSB (or alternatively, an order of LSB to MSB).

Referring to fig. 3, fig. 3 illustrates a block diagram of a system 300 that facilitates receiving an xUCI message including a CSI report at a base station in accordance with various aspects described herein. System 300 may include a processor 310 (e.g., a baseband processor, such as one of the baseband processors discussed in conjunction with fig. 1), transmitter circuitry 320, receiver circuitry 330, and memory 340 (which memory 340 may include any of a variety of storage media and may store instructions and/or data associated with one or more of processor 310, transmitter circuitry 320, or receiver circuitry 330). In various aspects, system 300 may be included within an evolved universal terrestrial radio access network (E-UTRAN) node B (evolved node B, eNodeB or eNB) or other base station in a wireless communication network. In some aspects, the processor 310, the transmitter circuitry 320, the receiver circuitry 330, and the memory 340 may be included in a single device, while in other aspects they may be included in different devices (e.g., part of a distributed architecture). As described in more detail below, system 300 can facilitate processing an xUCI message received from a UE that indicates CSI associated with one or more Tx beams.

The processor 310 may generate a different set of CSI-RS signals for each of the one or more Tx beams and may output the different sets of CSI-RS signals to the transmitter circuitry 320 for transmission to the UE over the associated Tx beam.

The processor 310 may process the xUCI message received by the receiver circuitry 330 from the UE. The xUCI message may include a CSI report (and optionally a BRS-RP report) indicating a different set of CSI parameters for each of the n Tx beams (e.g., n-2, etc.). In some aspects, the n Tx beams may include at least one of the one or more Tx beams transmitted by the transmitter circuit 320, or may not include any of the one or more Tx beams. Depending on the type of CSI report, the different set of CSI parameters for each of the n Tx beams may be different. As an example, for wideband CQI reporting, each different set of CSI parameters may include a BI for the Tx beam associated with that set of CSI parameters, a wideband CQI, a PMI, and an RI; for higher-layer configured (e.g., through higher-layer signaling generated by processor 310, etc.) subband CQI reports, each different set of CSI parameters may include a BI for the Tx beam associated with the set of CSI parameters, a wideband CQI, one or more subband differential CQIs, a PMI, and an RI; for higher-layer configured (e.g., through higher-layer signaling generated by processor 310, etc.) subband CQI and PMI reports, each different set of CSI parameters may include a BI for the Tx beam associated with the set of CSI parameters, a wideband CQI, one or more subband differential CQIs, one or more subband differential PMIs, and an RI, among others.

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

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

In various aspects, for wideband CQI reporting, a UE may report CSI for two best beams measured from CSI-RSs received by an eNB. The UE may report the following information in a wideband CQI report: a BI for beam 1; wideband CQI, PMI, and R1 for beam 1; BI for beam 2; and wideband CQI, PMI, and R1 for beam 2. Table 1 below shows fields and example corresponding bit widths for CQI feedback for wideband reporting for xPDSCH (5G physical downlink shared channel) transmission. N in table 1 below may be determined by higher layer signaling configuration and/or by system bandwidth.

Table 1: fields for channel quality information feedback for wideband CQI reports

Table 2 below shows fields and example corresponding bit widths for rank indication feedback for wideband CQI reporting for xPDSCH transmissions.

Table 2: fields for rank indication feedback for wideband CQI reports

Field(s)	Bit width
		Rank indicating first beam	1
Rank indicating second beam	1

The channel quality bits in tables 1 and 2 may form a bit sequence o₀,o₁,o₂,…,o_o-1Wherein o is₀A first bit, o, corresponding to a first field in each table₁Second bit, o, corresponding to the first field in each table_o-1The last bit corresponding to the last field in each table. The fields of the PMI may be in order of increasing subband index. The first bit of each field may correspond to the MSB of the field and the last bit may correspond to the LSB of the field.

In various aspects, for higher layer configured CQI reporting, the UE may report CSI for the two best beams measured from the CSI-RS. The UE may report the following information: BI for beam 1, subband CQI and PMI for beam 1, RI for beam 1, BI for beam 2, subband CQI and PMI for beam 2, and RI for beam 2. Table 3 below shows fields and example corresponding bit widths for reported channel quality information feedback for higher layer configurations of xPDSCH transmissions.

Table 3: fields for channel quality information feedback for higher layer configured sub-band CQI reports

Table 4 below shows fields and example corresponding bit widths for reported channel quality information feedback for higher layer configurations of xPDSCH transmissions with subband PMI/RI reporting configurations.

Table 4: fields for channel quality information feedback for higher layer configured subband CQI and subband PMI reporting

Table 5 below shows fields and example corresponding bit widths for rank indication feedback for higher layer configured sub-band CQI reports or higher layer configured sub-band CQI and sub-band PMI reports for xPDSCH transmission.

Table 5: fields for rank indication feedback for higher layer configured sub-band CQI reports or higher layer configured sub-band CQI and sub-band PMI reports

Field(s)	Bit width
		Rank indicating first beam	1
Rank indicating second beam	1

The channel quality bits in tables 3, 4 and 5 may form a bit sequence o₀,o₁,o₂,…,o_o-1Wherein o is₀A first bit, o, corresponding to a first field in each table₁Second bit, o, corresponding to the first field in each table_o-1The last bit corresponding to the last field in each table. The fields of PMI and subband differential CQI may be in order of increasing subband index. The first bit of each field may beThe last bit may correspond to the LSB of the field, corresponding to the MSB of the field.

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

Referring to fig. 4, fig. 4 illustrates a flow diagram of a method 400 that facilitates generating a CSI report at a UE based on CSI-RS signals received over multiple Tx beams in accordance with various aspects described herein. In some aspects, the method 400 may be performed at a UE. In other aspects, a machine-readable medium may store instructions associated with the method 400 that, when executed, may cause a UE to perform the actions of the method 400.

At 410, a different set of CSI-RS signals may be received through each of a plurality of Tx beams.

At 420, a different set of CSI parameters may be calculated for each of a plurality of Tx beams based on the CSI-RS received through that Tx beam. According to an embodiment, the different set of CSI parameters for each Tx beam may comprise one or more of: wideband CQI, one or more subband differential CQIs, PMI, one or more subband PMIs, or RI.

At 430, n Tx beams (e.g., n-2, etc.) may be selected from the plurality of Tx beams to report CSI parameters to the eNB. The n Tx beams may be selected based on different sets of CSI parameters associated with the n Tx beams (e.g., the n beams with the best channel quality, etc.).

At 440, an xUCI message may be generated, which may include CSI reports indicating n sets of CSI parameters associated with the n Tx beams. In some aspects (e.g., when the xUCI is to be sent without data), the xUCI message may also include a BRS-RP report generated as described herein.

At 450, the CSI report may be sent to the eNB (e.g., via xPUSCH).

Referring to fig. 5, fig. 5 illustrates a flow diagram of a method 500 that facilitates receiving, by a base station through an xPUSCH, an xUCI message that includes a CSI report, in accordance with various aspects described herein. In some aspects, method 500 may be performed at an eNB. In other aspects, a machine-readable medium may store instructions associated with the method 500 that, when executed, may cause an eNB to perform the actions of the method 500.

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

At 520, different one or more sets of CSI-RS signals may be transmitted to the UE through the associated Tx beam.

At 530, an xUCI message may be received from the UE, where the xUCI report may include CSI reports indicating n sets of CSI parameters each associated with a different Tx beam. In various aspects, depending on the type of CSI report, the one or more sets of CSI parameters may include one or more of: wideband CQI, one or more subband differential CQIs, PMI, one or more subband PMIs, or RI. In some aspects, the xUCI message may also include a BRS-RP report.

Optionally, based on the received one or more sets 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, e.g., a method; means for performing the acts or blocks of the method; and at least one machine readable medium comprising executable instructions that when executed by a machine (e.g., a processor with memory, an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), etc.) cause the machine to perform acts of a method for parallel communication using multiple communication technologies, or acts of an apparatus or system, in accordance with the described embodiments and examples.

Example 1 is an apparatus configured to be used within a User Equipment (UE), comprising: a processor configured to: processing, for each of a plurality of transmit (Tx) beams, a set of Channel State Information (CSI) reference signal (CSI-RS) signals received through the Tx beam; determining, for each of a plurality of 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 (CQIs), one or more Precoding Matrix Indicators (PMIs), and a Rank Indicator (RI) associated with the Tx beam; 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 associated with a second Tx beam of the plurality of Tx beams; generating a fifth generation (5G) uplink control information (xUCI) message including a CSI report; and outputting the xUCI message for transmission to an evolved node b (enb).

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

Example 3 includes the subject matter of any variation of example 2, wherein the CSI reports indicate the first wideband CQI and the second wideband CQI by four bits, respectively.

Example 4 includes the subject matter of any variation of any of examples 1-3, 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 wideband 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 by 2N bits, respectively, when a rank 1 transmission is received through the associated Tx beam, and indicates the first PMI and the second PMI by N bits, respectively, when a rank 2 transmission is received through the associated Tx beam.

Example 7 includes the subject matter of any variation of example 6, wherein N is configured by higher layer signaling.

Example 8 includes the subject matter of 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 subband CSI report configured by 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 subband differential CQIs associated with the second Tx beam.

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 subband CSI report configured by higher layer signaling.

Example 13 is a machine-readable medium comprising instructions that when executed cause a User Equipment (UE) to: receiving a different set of Channel State Information (CSI) reference signal (CSI-RS) signals through each of a plurality of transmit (Tx) beams; calculating a set of CSI parameters for each Tx beam of a plurality of Tx beams, wherein each set of CSI parameters is calculated based on a different set of CSI-RS signals received through the Tx beam, wherein each set of CSI parameters comprises one or more Channel Quality Indicators (CQIs), one or more Precoding Matrix Indicators (PMIs), and a Rank Indicator (RI) associated with the Tx beam; selecting a first Tx beam and a second Tx beam of 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 a 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 a different set of CSI-RS signals received through the second Tx beam; generating a fifth generation (5G) uplink control information (xUCI) message including a CSI report, the CSI report indicating a first set of CSI parameters and a second set of CSI parameters; 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 comprises a first BI associated with the first Tx beam, a first wideband CQI, and a first RI, and wherein the second set of CSI parameters comprises a second BI associated with the second Tx beam, a second wideband CQI, and a second RI.

Example 15 includes the subject matter of any variation of example 13, wherein the CSI report includes a plurality of bits indicating, in order, a first BI, one or more first CQIs, one or more first PMIs, and a first RI associated with the first Tx beam, and a second BI, one or more second CQIs, one or more second PMIs, and a second RI associated with the second Tx beam.

Example 16 includes the subject matter of any variation of any of examples 13-15, wherein the CSI report is a subband CSI report configured by higher layer signaling.

Example 17 includes the subject matter of any variation of example 16, wherein the CSI report indicates one or more first subband differential CQIs associated with different subbands of the first Tx beam and one or more second subband differential CQIs associated with different subbands of the second Tx beam.

Example 18 includes the subject matter of any variation of example 16, wherein the CSI report indicates the one or more first subband differential CQIs and the one or more second subband differential CQIs in an order of increasing subband 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 one or more second subband PMIs associated with different subbands of the second Tx beam.

Example 20 includes the subject matter of any variation of any of examples 13-15, wherein the CSI report is a wideband CSI report.

Example 21 includes the subject matter of any variation of any of examples 13-15, wherein the xUCI message includes a Beam Reference Signal (BRS) received power (BRS-RP) report indicating, for each of the one or more Tx beams, an associated BRS-RP, wherein each associated BRS-RP is calculated based on a set of BRSs received over 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 configured by 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 subband CSI report configured by 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, for each of the one or more Tx beams, an associated BRS-RP, wherein each associated BRS-RP is calculated based on a set of BRSs received through the associated Tx beam.

Example 27 is an apparatus configured to be used within an evolved node b (enb), comprising: a processor configured to: generating, for each of one or more transmit (Tx) beams, 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 transmission to a User Equipment (UE) through a Tx beam associated with the different set of CSI-RS signals; processing a CSI report received from a UE via a fifth generation uplink control information (xUCI) message, wherein the CSI report indicates a first Beam Index (BI) associated with a first Tx beam, one or more first Channel Quality Indicators (CQIs), one or more first Precoding Matrix Indicators (PMIs), and a first Rank Indicator (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 subband CSI report generated based at least in part on a configuration by 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 sub-band differential CQIs, and wherein the one or more second CQIs comprise 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 29-30, 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 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 PMIs.

Example 33 is a device configured to be used within a User Equipment (UE), comprising: means for receiving configured to receive a different set of Channel State Information (CSI) reference signal (CSI-RS) signals through each of a plurality of transmit (Tx) beams; an apparatus for processing configured to: calculating a set of CSI parameters for each Tx beam of a plurality of Tx beams, wherein each set of CSI parameters is calculated based on a different set of CSI-RS signals received through the Tx beam, wherein each set of CSI parameters comprises one or more Channel Quality Indicators (CQIs), one or more Precoding Matrix Indicators (PMIs), and a Rank Indicator (RI) associated with the Tx beam; selecting a first Tx beam and a second Tx beam of 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 a 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 a different set of CSI-RS signals received through the second Tx beam; and generating a fifth generation (5G) uplink control information (xUCI) message including a CSI report, the CSI report indicating the first set of CSI parameters and the second set of CSI parameters; and means for transmitting configured to transmit 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 comprises a first BI associated with the first Tx beam, a first wideband CQI, and a first RI, and wherein the second set of CSI parameters comprises a second BI associated with the second Tx beam, a second wideband CQI, and a second RI.

Example 35 includes the subject matter of any variation of example 33, wherein the CSI report includes a plurality of bits indicating, in order, a first BI, one or more first CQIs, one or more first PMIs, and a first RI associated with the first Tx beam, and a second BI, one or more second CQIs, one or more second PMIs, and a second RI associated with the second Tx beam.

Example 36 includes the subject matter of any variation of any of examples 33-35, wherein the CSI report is a subband CSI report configured by higher layer signaling.

Example 37 includes the subject matter of any variation of example 36, wherein the CSI report indicates one or more first subband differential CQIs associated with different subbands of the first Tx beam and one or more second subband differential CQIs associated with different subbands of the second Tx beam.

Example 38 includes the subject matter of any variation of example 36, wherein the CSI report indicates the one or more first subband differential CQIs and the one or more second subband differential CQIs in order of increasing subband 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 one or more second subband PMIs associated with different subbands of the second Tx beam.

Example 40 includes the subject matter of any variation of any of examples 33-35, wherein the CSI report is a wideband CSI report.

Example 41 includes the subject matter of any variation of any of examples 33-35, wherein the xUCI message includes a Beam Reference Signal (BRS) received power (BRS-RP) report indicating, for each of the one or more Tx beams, an associated BRS-RP, wherein each associated BRS-RP is calculated based on a set of BRSs received over 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 configured by 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 of examples 1-12, wherein the processor being configured to generate the xUCI message comprises the processor being configured to: generating a set of xUCI bits indicating a CSI report; encoding the set of xUCI bits; scrambling the set of xUCI bits; modulating the set of xUCI bits; and determining a set of physical resources to map the set of xUCI bits to the set of physical resources.

The above description of illustrated 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 precise forms disclosed. While specific embodiments of, and examples for, the invention are described herein for illustrative purposes, various modifications are possible which are considered within the scope of such embodiments and examples, as those skilled in the relevant art will recognize.

In this regard, while the presently disclosed subject matter has been described in connection with various embodiments and corresponding figures as appropriate, it is to be understood that other similar embodiments may be used or modifications and additions may be made to the described embodiments for performing the same, similar, alternative or alternative functions of the presently disclosed subject matter without deviating therefrom. Thus, the disclosed subject matter should not be limited to any single embodiment described herein, but rather construed in breadth and scope in accordance with the appended claims.

In particular regard to the various functions performed by the above described components or structures (assemblies, devices, circuits, systems, etc.), the terms (including a reference to a "means for … …") used to describe such components are intended to correspond, unless otherwise indicated, to any component or structure which performs the specified function of the described component (e.g., that is functionally equivalent), even though not structurally equivalent to the disclosed structure which performs the function in the herein illustrated exemplary implementations of the disclosure. In addition, while a particular feature may have been disclosed with respect to only one of several implementations, such feature may be combined with one or more other features of the other implementations as may be desired and advantageous for any given or particular application.

Claims

1. An apparatus configured for use within a user equipment, UE, comprising:

a processor configured to:

processing, for each of a plurality of transmit Tx beams, a set of channel state information, CSI, reference signal, CSI-RS, signals received through the Tx beam;

determining, for each of the plurality of 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 (CQIs), one or more Precoding Matrix Indicators (PMIs), and a Rank Indicator (RI) associated with the Tx beam;

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 associated with a second Tx beam of the plurality of Tx beams;

generating a fifth generation 5G uplink control information (xUCI) message comprising the CSI report; and

outputting the 5G xUCI message for transmission to a base station;

wherein the first set of CSI parameters comprises a first wideband CQI associated with the first Tx beam and the second set of CSI parameters comprises a second wideband CQI associated with the second Tx beam,

wherein the CSI report is a sub-band CSI report configured by higher layer signaling,

wherein the CSI report indicates a first set of subband differential CQIs associated with the first Tx beam and a second set of subband differential CQIs associated with the second Tx beam,

wherein the CSI report indicates a first BI, a first set of subband PMIs, and a first RI associated with the first Tx beam, and indicates a second BI, a second set of subband PMIs, and a second RI associated with the second Tx beam,

wherein the CSI report indicates the first set of subband PMIs and the second set of subband PMIs by 2N bits, respectively, when a rank 1 transmission is received over an associated Tx beam, and indicates the first set of subband PMIs and the second set of subband PMIs by N bits, respectively, when a rank 2 transmission is received over an associated Tx beam, where N is based on a system bandwidth.

2. The apparatus of claim 1, wherein the CSI report indicates the first wideband CQI and the second wideband CQI by four bits, respectively.

3. The apparatus of claim 1, wherein N is configured by higher layer signaling.

4. The apparatus of claim 1, wherein N is determined based on a system bandwidth.

5. An apparatus configured for use within a user equipment, UE, comprising:

means for receiving configured to receive a different set of channel state information, CSI, reference signal, CSI-RS, signals over each of a plurality of transmit Tx beams;

an apparatus for processing configured to:

calculating a set of CSI parameters for each Tx beam of the plurality of Tx beams, wherein each set of CSI parameters is calculated based on a different set of CSI-RS signals received through the Tx beam, wherein each set of CSI parameters comprises one or more Channel Quality Indicators (CQIs), one or more Precoding Matrix Indicators (PMIs), and a Rank Indicator (RI) associated with the Tx beam;

selecting a first Tx beam and a second Tx beam of 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 a 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 a different set of CSI-RS signals received through the second Tx beam; and

generating a fifth generation 5G uplink control information (xUCI) message comprising a CSI report indicating the first set of CSI parameters and the second set of CSI parameters; and means for transmitting configured to transmit the CSI report to a base station,

wherein the CSI report indicates the first and second sets of subband PMIs by 2N bits, respectively, when a rank 1 transmission is received through an associated Tx beam, and indicates the first and second sets of subband PMIs by N bits, respectively, when a rank 2 transmission is received through an associated Tx beam.

6. The device of claim 5, wherein the CSI report includes a plurality of bits indicating, in order, the first BI, one or more first CQIs, one or more first PMIs, and the first RI associated with the first Tx beam, and the second BI, one or more second CQIs, one or more second PMIs, and the second RI associated with a second Tx beam.

7. The device of claim 5, wherein the CSI report indicates one or more first subband differential CQIs and the one or more second subband differential CQIs in order of increasing subband index.

8. The device of claim 5, wherein the CSI report indicates one or more first subband PMIs associated with different subbands of the first Tx beam and one or more second subband PMIs associated with different subbands of the second Tx beam.

9. The device of any of claims 5-8, wherein the 5G xUCI message comprises a beam reference signal, BRS, received power, BRS-RP, report indicating, for each of one or more Tx beams, an associated BRS-RP, wherein each associated BRS-RP is calculated based on a set of BRSs received over the associated Tx beam.

10. The device of claim 9, wherein the number of BRS-RPs indicated in the BRS-RP report is configured by higher layer signaling.

11. The device of claim 9, wherein the number of BRS-RPs indicated in the BRS-RP report is predefined.

12. An apparatus configured for use within a base station, comprising:

a processor configured to:

generating, for each of one or more transmit Tx beams, 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 transmission to a user equipment, UE, over a Tx beam associated with the different set of CSI-RS signals;

processing a CSI report received from the UE through a fifth generation uplink control information (xUCI) message, wherein the CSI report indicates a first Beam Index (BI) associated with a first Tx beam, one or more first Channel Quality Indicators (CQI), one or more first Precoding Matrix Indicators (PMIs), and a first Rank Indicator (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,

wherein the one or more first CSIs comprise a first wideband CQI and a first set of subband differential CQIs associated with the first Tx beam, and the second set of CSI parameters comprise a second wideband CQI and a second set of subband differential CQIs associated with the second Tx beam,

wherein the CSI report indicates a first BI, a first set of subband PMIs, and a first RI associated with the first Tx beam, and indicates a second BI, a second set of subband PMIs, and a second RI associated with the second Tx beam

13. A machine-readable medium comprising instructions that when executed cause a user equipment, UE, to:

receiving a different set of channel state information, CSI, reference signal, CSI-RS, signals through each of a plurality of transmit Tx beams;

selecting a first Tx beam and a second Tx beam of 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 a 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 a different set of CSI-RS signals received through the second Tx beam;

generating a fifth generation 5G uplink control information (xUCI) message comprising a CSI report indicating the first set of CSI parameters and the second set of CSI parameters; and

transmitting the CSI report to a base station,

14. The machine-readable medium of claim 13, wherein the CSI report includes a plurality of bits indicating, in order, the first BI, one or more first CQIs, one or more first PMIs, and the first RI associated with the first Tx beam, and the second BI, one or more second CQIs, one or more second PMIs, and the second RI associated with a second Tx beam.

15. The machine-readable medium of claim 13, wherein the CSI report indicates one or more first subband differential CQIs associated with different subbands of the first Tx beam and one or more second subband differential CQIs associated with different subbands of the second Tx beam.

16. The machine-readable medium of claim 13, wherein the CSI report indicates one or more first subband differential CQIs and one or more second subband differential CQIs in increasing order of subband index.

17. The machine-readable medium of claim 13, wherein the CSI report indicates one or more first subband PMIs associated with different subbands of the first Tx beam and one or more second subband PMIs associated with different subbands of the second Tx beam.

18. The machine readable medium of any of claims 13-17, wherein the 5G xUCI message includes a beam reference signal, BRS, received power, BRS-RP, report indicating, for each of one or more Tx beams, an associated BRS-RP, wherein each associated BRS-RP is calculated based on a set of BRSs received over the associated Tx beam.

19. The machine-readable medium of claim 18, wherein the number of BRS-RPs indicated in the BRS-RP report is configured through higher layer signaling.

20. The machine-readable medium of claim 18, wherein the number of BRS-RPs indicated in the BRS-RP report is predefined.