TWI767589B - Control signaling in multiple beam operation - Google Patents

Abstract

Techniques for generating control signaling for multiple beam transmissions are discussed. One example apparatus comprises a processor configured to: generate one or more downlink control information (DCI) messages, wherein each of the one or more DCI messages is associated with a distinct transmit beam of a multiple beam transmission to a user equipment (UE), wherein the multiple beam transmission comprises N_b transmit beams, wherein N_b is at least 2; assign each of the one or more DCI messages to an associated search space of one or more search spaces; and output the one or more DCI messages for subsequent transmission via transmitter circuitry during a common subframe, wherein the processor is configured to output each of the one or more DCI messages for subsequent transmission via a distinct transmit beam of the N_b transmit beams.

Description

Controlled Signaling Techniques in Multiple Beam Operation

Field of Invention Disclosed herein is related to wireless technologies, and more particularly, to techniques for controlling signaling for multiple beam transmission communications.

BACKGROUND OF THE INVENTION In a high-capacity multiple-input-output (MIMO) system, an evolved Node B (eNB) can transmit downlink control and data by analogy to beamforming. In such a scenario, a user equipment (UE) may have _Nap receive (Rx) antenna panels and be capable of receiving _Nap beams from one or more transmit points (TPs).

According to an embodiment of the present invention, an apparatus configured to be employed in an evolved Node B (eNB) is specifically proposed, comprising: a processor configured to generate one or more downlinks Channel Control Information (DCI) messages, wherein each of the one or more DCI messages is associated with a separate transmit beam of a multi-beam transmission to a user equipment (UE), wherein the multi-beam transmitting includes _Nb transmit beams, where _Nb is at least 2; assigning each of the one or more DCI messages to a search space associated with one of the one or more search spaces; and in a common subspace The one or more DCI messages for subsequent transmission are output by the transmitter circuit during the frame, wherein the processor is configured to split the transmit beam by one of the N _b transmit beams for output for Each of the one or more DCI messages is then transmitted.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The present disclosure will now be described with reference to the accompanying drawings, in which like reference numerals are used to refer to like elements throughout, and in which the illustrated structures and devices are not necessarily drawn to scale. As exemplified herein, the terms "component," "system," "interface," etc. are intended to refer to computer-related entities, hardware, software (eg, in execution), and/or firmware. For example, a component can be a processor (eg, a microprocessor, controller, or other processing device), a process running on the processor, a controller, an object, an executable, a program, a storage device, a computer, Tablet PC and/or user equipment (eg, mobile phone, etc.) with a processing device. By way of example, applications and servers running on servers can also be components. One or more components may reside within the process, and components may be localized on one computer and/or distributed among two or more computers. The elements of a set or other components of a set may be described herein, where the term "set" can be interpreted as "one or more."

Also, these components may execute from various computer-readable storage media having various data structures stored thereon, such as using modules. These components may be processed locally and/or remotely, such as by having one or more data packets (eg, on a local system, a distributed system, and/or across networks such as the Internet, local area network, wide area network data from one component that interfaces with another component) through signals in a circuit, or similar network with other systems.

As another example, a component may be a device having a specific function provided by mechanical components operated by electrical or electronic circuits, software applications or firmware that are executable by one or more processors application operation. The one or more processors may be internal or external to the device and execute at least part of a software or firmware application. As yet another example, components may be devices that use no mechanical components to provide specific functions via electronic components; electronic components may include one or more processors therein to perform, at least in part, impart the functions of such electronic components software and/or firmware.

The use of the word instance is intended to present a concept in a concrete way. As used in this case, the term "or" is intended to mean an inclusive "or" rather than an exclusive "or". In other words, unless stated otherwise or clear from context, "X employs A or B" is intended to mean any of the permutations that are naturally included. In other words, if X employs A; X employs B; or X employs both A and B, then either of the foregoing satisfies "X employs A or B". In addition, the articles "a(a)" and "an(an)" as used in this case and in the scope of the appended claims are generally subject to interpretation unless otherwise stated or clear from the context to indicate a singular form to mean "one or more". Again, as for the terms "includes", "includes", "has", "has", and "with" are used in the detailed description and in the scope of claims, in a manner similar to the term "comprising", these terms Intended to be inclusive.

As used herein, the term "circuitry" may refer to, be part of, or include a particular specification of executing one or more software or firmware programs, combinational logic circuits, and/or other suitable hardware components that provide the described functionality Application integrated circuits (ASICs), electronic circuits, processors (shared, dedicated, or group), and/or memory (shared, dedicated, or group). In some embodiments, the circuitry may be implemented in one or more software or firmware modules, or may be functions associated with circuitry that may be implemented by the modules. In some embodiments, logic that is at least partially operable in hardware may be included.

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

The application circuit 102 may include one or more application processors. For example, 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 (eg, graphics processors, application processors, etc.). The processor may be coupled to and/or may include memory/storage, and may be configured to execute instructions stored in the memory/storage to enable applications and/or operating systems to run on the system.

Baseband circuitry 104 may include circuitry such as, but not limited to, one or more single-core or multi-core processors. Baseband circuit 104 may include one or more baseband processors and/or control logic for processing the baseband signal received from the receive signal path of RF circuit 106 and generating the baseband signal for the transmit signal path of RF circuit 106 . The baseband processing circuit 104 can interface with the application circuit 102 for generation and processing of baseband signals, and for control operations 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 existing generations, developing generations, or future generations (eg, fifth generation (5G), 6G, etc.). Baseband circuitry 104 (eg, one or more of baseband processors 104a-d) may handle various radio control functions that enable it to communicate through RF circuitry 106 with one or more radio networks. Radio control functions may include, but are not limited to, signal modulation/demodulation, encoding/decoding, radio frequency shifting, and the like. In some embodiments, the modulation/demodulation circuitry of the baseband circuit 104 may include Fast Fourier Transform (FFT), precoding, and/or cluster mapping/de-mapping functions. In some embodiments, the encoding/decoding circuitry of baseband circuitry 104 may include convolution, tail-biting convolution, turbo boost, Viterbi, and/or low density parity check (LDPC) encoder/decoder Function. 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 several embodiments, baseband circuitry 104 may include elements of a protocol stack such as elements of the 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. The central processing unit (CPU) 104e of the baseband circuit 104 may be configured to run a protocol stack of components for signaling at the PHY, MAC, RLC, PDCP and/or RRC layers. 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 can be conveniently 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 baseband circuit 104 and application circuit 102 may be implemented together, such as on a system-on-a-chip (SOC).

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

RF circuitry 106 may enable communication with wireless networks using modulated electromagnetic radiation via non-solid media. In various embodiments, RF circuitry 106 may include switches, filters, amplifiers, etc. to facilitate communication with wireless networks. RF circuit 106 may include a receive signal path, which may include circuitry to downconvert the RF signal received from FEM circuit 108 and provide a baseband signal to baseband circuit 104 . RF circuit 106 may also include a transmit signal path, which may include circuitry to upconvert the baseband signal provided by baseband circuit 104 and provide an RF output signal to FEM circuit 108 for transmission.

In some embodiments, the RF circuit 106 may include a receive signal path and a transmit signal path. The receive signal path of RF circuit 106 may include mixer circuit 106a, amplifier circuit 106b, and filter circuit 106c. The transmit signal path of RF circuit 106 may include filter circuit 106c and mixer circuit 106a. The RF circuit 106 may also include a synthesizer circuit 106d for synthesizing a frequency for use by the mixer circuit 106a of the receive signal path and the transmit signal path. In several 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 synthesis frequency provided by the synthesizer circuit 106d. Amplifier circuit 106b may be configured to amplify the down-converted signal, and filter circuit 106c may be a low-pass filter (LPF) or band-pass filter (BPF) configured to convert the down-converted signal from the The output fundamental frequency signal is generated by removing the undesired signal. The output baseband signal may be provided to baseband circuit 104 for further processing. In some embodiments, the output fundamental frequency signal may be a null frequency fundamental frequency signal, but it is not necessary. In some embodiments, the mixer circuit 106a of the receive signal path may comprise a passive mixer, although the scope of embodiments is not limited in this respect.

In several embodiments, the mixer circuit 106a of the transmit signal path may be configured to upconvert the incoming fundamental frequency signal based on the synthesis frequency provided by the synthesizer circuit 106d to generate the RF output signal for the FEM circuit 108 . The baseband signal may be provided by baseband circuit 104 and may be filtered by filter circuit 106c. The filter circuit 106c may include a low pass filter (LPF), although the scope of 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 include two or more mixers and may be configured for quadrature downconversion and/or upconversion, respectively. In several 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 carrier suppression (eg, Hartley) image carrier suppression). In some embodiments, the mixer circuit 106a and the mixer circuit 106a of the receive signal path may be configured for direct down-conversion and/or direct 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 be configured for superheterodyne operation.

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

In several dual-mode embodiments, separate radio IC circuits may be provided for processing signals of each spectrum, but 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, although the scope of the embodiments is not limited in this respect, as other types of frequency synthesizers may be suitable. . For example, the synthesizer circuit 106d may be a sigma-delta 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 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 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), but is not required. The divider control input may be provided by base frequency circuit 104 or application circuit 102 depending on the desired output frequency. In some embodiments, the divider control input (eg, N) may be determined from a look-up table based on the channel indicated by the application circuit 102 .

The synthesizer circuit 106d of the RF circuit 106 may include a divider, a delay locked loop (DLL), a multiplier, and a phase accumulator. In some embodiments, the divider may be a dual modulo divider (DMD), and the phase accumulator may be a digital phase accumulator (DPA). In some embodiments, the DMD may be configured to divide the input signal by N or N+1 (eg, based on a carry-out) to provide a fractional divide ratio. In some embodiments, the DLL may include a set of cascaded tunable delay elements, phase detectors, charge pumps, and D-type flip-flops. In these embodiments, delay elements can be configured to break a VCO cycle into Nd equal phase 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 may be configured to generate the carrier frequency as the output frequency, while in other embodiments, the output frequency may be a multiple of the carrier frequency (eg, twice the carrier frequency, four times the carrier frequency, etc.). multiples) and joint quadrature generator and divider circuits are used to generate multiple signals at the carrier frequency that have multiple different phases relative to each other. In some embodiments, the output frequency may be the LO frequency (fLO). In some embodiments, the RF circuit 106 may include an IQ/polarity converter.

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

In some embodiments, the FEM circuit 108 may include a TX/RX switch to switch between transmit mode and receive mode operation. The FEM circuit may 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 RF circuit 106). The transmit signal path of FEM circuit 108 may include a power amplifier (PA) to amplify the incoming RF signal (eg, provided by RF circuit 106 ), and one or more filters to generate the RF signal for subsequent transmission (eg, by One or more of the one or more antennas 110 .

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

Furthermore, although the above examples of device 100 are discussed in the context of UE devices, in various aspects, similar devices may be employed in connection with a base station (BS) such as an evolved node B (eNB).

2, an example of a multiple (dual in the example shown) beam transmission scenario within a TP (transmission point) is schematically illustrated in accordance with various aspects described herein, where a serving TP can transmit control signaling. In the example scenario of FIG. 2 , each receive (Rx) antenna panel of a user equipment (UE) may have different target transmit (Tx) beams from a single TP, the serving TP in FIG. 2 . 3, an example of a multiple (dual in the example shown) beam transmission scenario between TPs (transmit points) is schematically illustrated in accordance with various aspects described herein, wherein the serving TP and/or the auxiliary TP can transmit control signaling. In the example scenario of Figure 3, the two beams are from different TPs, and the TPs can be linked with ideal or non-ideal idle transmissions. Critically controlled signaling is designed to address these and other multi-beam transmission scenarios, which cannot be addressed by conventional Long Term Evolution (LTE) systems.

In various aspects, the discussion can be applied to any multi-beam transmission scenario, such as intra-TP multi-beam transmission and inter-TP multi-beam transmission with ideal or non-ideal empty transmission, for multi-beam transmission. Control beam signaling technology. In various embodiments, the techniques discussed herein are used to generate and/or communicate (1) downlink control signaling for xPDSCH (Fifth Generation (5G) Physical Downlink Shared Channel) and/or (2) Uplink Control Information (UCI) feedback for multi-beam transmission.

Referring to FIG. 4, a block diagram of a system 400 for assisting in the generation and communication of downlink control signaling for multiple beam transmissions from a base station is illustrated in accordance with various aspects described herein. System 400 may include a processor 410 (eg, a baseband processor, such as one of the baseband processors discussed in connection with FIG. 1), transmitter circuitry 420, and memory 430 (which may include any of a variety of storage media). One, and may store instructions and/or data associated with one or more of processor 410 or transmitter circuit 420). In various aspects, system 400 may be incorporated 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, processor 410, transmitter circuit 420, and memory 430 may be included within a single device, while in other aspects, they may be included within different devices, such as components of a distributed architecture. As described in more detail below, system 400 can assist in scheduling downlink assignments and/or uplink grants for one or more UEs linked to multiple beam transmissions.

One or more downlink control information (DCI) messages may be generated for a user equipment processor 410 . Each of the DCI messages may be associated with a separate transmit beam of multiple beams (eg, including _Nb beams, where _Nb is an integer greater than 1) transmitted to the UE, such as each with one or more transmit beams A different transmit beam is associated through which the eNB using system 400 communicates with the UE. In the case where the _Nb transmit beams each originate from a single TP (eg, a TP of the eNB), the multi-beam transmission is an intra-TP transmission, and the processor 410 may generate _Nb DCI messages, _Nb transmissions The beams each have a message. On the other hand, if at least two of the _Nb transmit beams originate from separate TPs, then the multi-beam transmission is an inter-TP transmission, and processor 410 may generate fewer than _Nb DCI messages.

Processor 410 may assign each of the DCI messages to a search space associated with the DCI message of one or more search spaces. In certain aspects, one or more search spaces may comprise a single common search space, and each of the DCI messages may be assigned to a single common search space. In these aspects, each of the DCI messages may include a beam indicator that indicates which transmit beam the DCI is associated with. With a common search space, in some aspects DCI messages can be assigned to separate control channel elements (CCEs), while in other aspects some or all of the DCI messages can be assigned to it and other DCI messages One or more common CCE indices to share.

In other aspects, one or more search spaces may include N search spaces, which in various embodiments may be consecutive (e.g., such that the beginning CCE of _a search space for the next transmit beam may be from the previous transmit). beam search space decision, etc.). In these aspects, each of the _Nb search spaces may be associated with _a separate transmit beam of the Nb transmit beams, and the processor 410 may assign each DCI message to the transmit beam associated with the DCI message. associated search space.

Processor 410 may also output one or more DCI messages for transmission (eg, through transmitter circuitry 420) during a common subframe, which may be associated with each of the _Nb transmit beams A subframe during which the associated DCI message is transmitted.

In orientation, processor 410 may also generate and output one or more higher layer (eg, Radio Resource Control (RRC) or Medium Access Control (MAC), etc.) messages associated with multi-beam transmission, thereby adding or shifting One or more secondary transmit beams other than multi-beam transmits.

Various characteristics of the DCI messages generated by processor 410 may vary, depending on the embodiment.

In the first set of embodiments, each of the _Nb transmit beams may be associated with separate hybrid automatic repeat request (HARQ) processing and independent HARQ operation. In these embodiments, each DCI message may include a HARQ process that indicates one of the total number of HARQ processes (eg, N) associated with the separate transmit beams associated with the DCI message. In various such aspects, the indicated HARQ process can be identified based on the combination of the indicated HARQ process IDs and which transmit beam the DCI message is associated with.

In the second set of embodiments, the corresponding HARQ process may be indicated by the HARQ process ID of the DCI message to indicate one of the HARQ processes with a larger number of shares. For example, the total number of HARQ processes may be _Nb x N, where N is the number of processes for single-beam operation, and may be indicated by _Nb x M bits, where M is employed to indicate the number of processes in single-beam operation. The number of bits of the HARQ process ID.

位元，於該處

為頂函數。Embodiments of the second set facilitate forwarding through xPDSCH from different beams originally transmitted, which can provide diversity gain. For example, in several aspects, one of the DCI messages generated by processor 410 may be a DCI message associated with a forwarding of a primary transmission previously transmitted through a transmit beam different from the transmit beam associated with the DCI message. In the case where forwarding occurs, the DCI associated with the forwarding may include a HARQ process swap indicator, which may indicate the HARQ process associated with the forwarding. The HARQ process swap indicator may include a 1-bit (eg, a flag) for dual beam transmission, and may generally include

bits, there

is the top function.

Referring to FIG. 5, there are illustrated blocks of a system 500 directed to assisting the reception of downlink control messages and the generation of uplink control messages associated with multiple beam transmissions received at a user equipment (UE) in accordance with various blocks described herein picture. System 500 may include receiver circuitry 510, processor 520 (eg, a baseband processor, such as one of the baseband processors discussed in connection with FIG. 1), transmitter circuitry 530, and memory 540 (which may include various Any of storage media, and may store instructions and/or data associated with one or more of receiver circuit 510, processor 520, or transmitter circuit 530). In various aspects, system 500 may be embodied within a user equipment (UE). As described in more detail below, system 500 can facilitate the receipt and reply of one or more downlink control channel messages from one or more search spaces associated with multi-beam transmission.

Receiver circuit 510 can receive multiple beam transmissions on _Nb transmit beams from one or more TPs (eg, a single TP for intra-TP scenarios, and more than one TP for inter-TP scenarios), and can provide multiple The beam is transmitted to processor 520 .

The processor 520 can receive the multi-beam transmission from the receiver circuit 510, and can reply _Nb separate DCI messages from one or more search spaces, each associated with _a separate transmit beam of the Nb transmit beams. Depending on the embodiment, the DCI message can be replied from a common search space, or from N _b consecutive search spaces, and the content of the DCI message can vary in different embodiments.

The processor 520 can also generate one or more uplink control information (UCI) messages, and output the one or more UCI messages for subsequent transmission to at least one of the TPs. One or more UCI messages may include some or all of the following information associated with the _Nb transmit beams: Beam Reference Signal Received Power (BRS-RP), Channel Status Information (CSI), HARQ-ACK (HARQ-ACK) )Wait.

In several aspects, the one or more UCI messages may be a single UCI message that includes feedback information associated with the _Nb transmit beams. In other aspects, the one or more UCI messages may be _Nb UCI messages, each associated with _a separate transmit beam of the Nb transmit beams.

Furthermore, depending on the embodiment, the TP or TPs of the UCI message output for subsequent transmission may vary. In some embodiments, where each UCI includes feedback information associated with a single transmit beam (or with one or more transmit beams from a common TP), each UCI message can be output for subsequent transmission to TP from which the transmit beam or beams are received. In other embodiments, each of the one or more UCI messages may be output for subsequent transmission to a single TP. The single TP may be the TP where the main beam of the _Nb beams is received, or may be the TP received via higher layer signaling (eg, RRC, etc.) as indicated by the configuration.

To provide specific examples of the techniques discussed herein, specific embodiments and techniques are discussed below in the context of dual beam transmission. However, it should be understood that these embodiments and techniques can be extended to other numbers of transmit beams (eg, _Nb > 2).

In the dual beam (or _Nb -beam) mode of operation, the UE may assume that downlink signals need to be received from two (or _Nb ) transmit (Tx) beams. The Tx beams from the serving TP may be referred to as primary Tx beams, and the Tx beams from the secondary TP(s) may be referred to as secondary Tx beams.

For the intra-TP multiple beam operation case, the primary Tx beam may be the Tx beam with the strongest BRS-RP measured from one or more antenna panels of the UE, and the secondary Tx beam may be the one with the strongest BRS measured from another antenna panel - The Tx beam of the RP, or the next strongest from one or more antenna panels when the primary Tx beam is the strongest from all antenna panels.

In various aspects, the addition or removal of secondary Tx beams may be indicated through higher layer signaling, such as through MAC control elements, RRC signaling, and the like. Higher layer signaling may indicate that the transmit beam is transparent to the beam's BRS index to add or remove, which index may be explicitly indicated by the UE with the BRS-RP for the secondary transmit beam.

For downlink (DL) control signaling, DCI can be used to carry downlink assignments and/or uplink grants. In orientation, one DCI message can be used to carry information for one beam. Thus, in dual beam mode, the UE may assume that two DCIs are available for detection in one subframe (and in Nb beam mode, _{Nb DCIs} are available for detection).

In a first set aspect, the UE may have additional search space for each of the secondary transmit beams when decoding the 5G Physical Downlink Control Channel (xPDCCH). The search spaces for the primary and secondary transmit beams may be contiguous, wherein the CCE indices for both (or all N _b ) search spaces may be contiguous. In these aspects, given the maximum search space size among all possible aggregation levels, the starting CCE index for the (primary) secondary transmit beam may be the subsequent CCE after the last CCE in the primary transmit beam (and For embodiments with _Nb > 2, the starting CCE for each additional secondary transmit beam may similarly follow the previous secondary transmit beam).

As an example of the orientation of such a set, if the search space is defined as 3rd Generation Partnership Project (3GPP) Technical Specification (TS) 36.213 clause 9.1.1, the possible aggregation levels there may be {1,2, 4,8} and its corresponding search space size may be {6,12,8,16}CCE, then the search space for the secondary transmit beam may start at the CCE with index ε1 _{+ 17} , where ε1 Indicates the first CCE index in the search space for the primary transmit beam (and similarly for the next secondary transmit beam, replacing ε ₁ with ε ₂ , where ε ₂ indicates the search for the secondary transmit beam first CCE index in space, etc.). Referring to FIG. 6, a schematic diagram illustrating an example configuration of one of the various oriented search spaces for dual beam modes of operation in accordance with the description herein is illustrated.

In several embodiments, xPDSCH transmission on each beam may have independent HARQ operation. In these embodiments, a UE receiving a multi-beam transmission can find the transmit beam corresponding to the HARQ process and the DCI based on the HARQ process ID indicated by the DCI. The transmit beams of the DCI can be obtained by their search space positions in embodiments where the DCI for separate transmit beams are in separate search spaces, and can be determined from the DCI when explicitly indicated by the DCI.

Referring to FIG. 7, a diagram illustrating an example of one of the various HARQ processing indications for stand-alone HARQ operation in dual-beam scenarios in accordance with the descriptions herein is illustrated. In the DCI in the primary search space in FIG. 7, the HARQ process ID may be x, and in the DCI in the secondary search space, the HARQ process ID may be y. The total number of HARQ processes for one beam may be N.

In other embodiments, the corresponding HARQ process can be indicated only by the HARQ process ID in the DCI. In some of these embodiments, the total number of HARQ processes may be amplified for UEs with multiple beam transmissions. In one example, the total number of HARQ processes may be 2N in a dual-beam embodiment (or NxN in an _Nb -beam multi-beam embodiment ₎ , and the number of bits of the HARQ process ID may be 2M, where M is the number of bits used for the HARQ process ID for a single beam operation. Comparing N HARQ processes per beam, this facilitates xPDSCH forwarding on a different beam than the original beam.

In several orientations, either of the transmit beams may be employed to forward xPDSCH previously transmitted on the other transmit beam for diversification gain. For example, in a dual beam embodiment, the primary transmit beam may be applied to forward the xPDSCH originally transmitted through the secondary transmit beam, or vice versa. In these aspects, a beam to HARQ process swap flag (for dual beam embodiments) or other HARQ process swap indicator can be added to the DCI to indicate which HARQ process the DCI applies to. For dual beam operation, the beam to HARQ process swap flag may contain 0 or 1, where 0 may indicate that the beam to HARQ process swap is disabled, and a value of 1 may indicate that the beam to HARQ process swap is enabled.

Referring to FIG. 8, a schematic diagram of one example of one example of a dual beam scenario for HARQ indication is illustrated in accordance with the various beam-to-HARQ processing-based switching flags described herein. In the scenario example of Figure 8, the HARQ process ID in the primary DCI is y, and the HARQ process ID in the secondary DCI is x.

位元，於該處

為頂函數。N_b 個DCI可配置於UE的搜尋空間中的相同CCE或不同CCE。於面向中，唯有當使用波束聚合時波束指示符才能被啟用。BI也能增加於上行鏈路授予來指示上行鏈路發射被允許來自哪個波束。針對雙波束實例，BI能指示上行鏈路發射是否被允許來自主要發射波束或次要發射波束。參考圖9，例示依據本文描述的各種面向用於一共通搜尋空間的HARQ指示的雙波束場景之一實例。In another set of embodiments, a single common search space may be applied to the UE for all transmit beams of a multi-beam transmission. In these aspects, a beam indicator (BI) may be added to the DCI to indicate which beam the DCI targets. In one dual beam embodiment, the beam indicator may have 1 bit where the first value may indicate the primary transmit beam and the second value may indicate the secondary transmit beam. In an _Nb beam multi-beam environment, BI may include

bits, there

is the top function. The N _b DCIs can be configured in the same CCE or different CCEs in the UE's search space. In orientation, the beam indicator can only be enabled when beam aggregation is used. BI can also be added to the uplink grant to indicate from which beam uplink transmissions are allowed. For the dual beam example, the BI can indicate whether uplink transmissions are allowed from the primary transmit beam or the secondary transmit beam. Referring to FIG. 9, an example of one example of a dual beam scenario oriented to HARQ indication for a common search space is illustrated in accordance with the various described herein.

Various aspects discussed herein may relate to techniques for communicating uplink control information (UCI) based on multiple beam transmissions received at the UE. UCI can be transmitted through xPUSCH (5G Physical Uplink Shared Channel), which can be indicated by an uplink grant. In an aggregated UCI embodiment, the UE may assume that the TP for which the uplink grant is decoded for the UCI is the target reception point (RP) for the UCI. As such, in this set of embodiments, the UE may perform power control operations based on this assumption.

In another aggregated UCI embodiment, the UE may frequently send a UCI to an RP using the primary beam independently of where the uplink grant for that UCI is decoded. As such, the UE does not need to maintain multiple transmit power control factors and time advances (TAs), and the transmitted UCI may contain individual UCIs for a single RP, or joint UCIs for more than one (eg, all) RPs. In some aspects, the RP used to receive the UCI may be predefined as the TP sending the primary transmission, while in other aspects, the RP may be indicated by higher layer signaling.

If only one UCI is allowed to be reported in a subframe and a UCI resource collision between the primary UCI and one or more secondary UCIs occurs, the UE may send only the primary UCI, or may order together from the primary UCI to the secondary UCI Two (or more, depending on the embodiment) UCIs are transmitted.

In embodiments in which the UE transmits a joint UCI, the joint UCI may include one or more of the following: up to W BRS-RPs, where W may be defined by the system; channel state information (CSI) from the primary transmit beam. ) CSI measured by reference signal (CSI-RS); HARQ-ACK for primary transmit beam HARQ processing; CSI measured from CSI-RS in secondary transmit beam; or HARQ-ACK for secondary transmit beam.

In other embodiments, each UCI may contain information for the beam r from which the uplink grant was received. UCI may include one or more of: up to W BRS-RPs, where W can be defined by the system; CSI measured from channel state information (CSI) reference signals (CSI-RS) in beam r; or for HARQ-ACK for beam r HARQ process.

BRS-RPs may be measured from all _Nb transmit beams and only report up to W BRS-RPs. CSI and HARQ-ACK in the UCI can be beam specific.

位元HARQ處理調換可施加於該DCI來指示該DCI施加至哪個HARQ處理，於該處N_b 代表發射波束的數目。In various aspects, the techniques and features discussed in conjunction with the dual-beam embodiment can be extended to multi-beam operation with _Nb beams. In various aspects, the search space for multiple beams may be continuous, or may be a common search space. Alternative Beam-to-HARQ Processing Swap Flag, indicated by

A bit HARQ process permutation may be applied to the DCI to indicate which HARQ process the DCI is applied to, where _Nb represents the number of transmit beams.

Referring to FIG. 10, a flow diagram of a method 1000 for the generation of auxiliary downlink control information for multiple beam transmissions including transmit beams from a base station is illustrated in accordance with various methods described herein. In several aspects, method 1000 may be performed at an eNB. In other aspects, the machine-readable medium can store instructions associated with method 1000 that, when executed, enable an eNB to perform the actions of method 1000 .

At 1010, one or more DCI messages may be generated for a UE, each of the DCI messages being associated with an uplink grant or downlink assignment to the UE. The generated DCI messages may each be associated with a separate transmit beam from the _Nb beam multiple transmit beams to one of the one or more transmit beams to the UE. Depending on the embodiment, the content of the DCI message may vary, as described elsewhere herein (eg, in some embodiments, may include one or more of a beam indicator or a HARQ process swap indicator, or none Wait).

At 1020, one or more transmit beams may be transmitted to the UE as part of a multiple beam transmission, each of the one or more transmit beams including associated DCI messages. Each of the one or more DCI messages may be transmitted through one or more search spaces associated with the UE (eg, a single common search space, or _a separate search space of one of Nb consecutive search spaces). In some aspects, each of the DCI messages may be allocated to a separate CCE, or in other aspects, one or more of the DCI messages may be associated with at least one other DCI message (eg, any of the DCI messages generated at 1010). or, or _a DCI message associated with one of the Nb separate transmit beams) is allocated to a common CCE.

At 1030, one or more DCI messages may be received from the UE based on at least one of the _Nb transmit beams. In certain aspects, the one or more DCI messages may include a separate UCI message for each of the one or more DCI messages (eg, including the BRS-RP, and a pair of UCI messages associated with the DCI message). HARQ-ACK and CSI-RS of the transmit beam). In other aspects, at least one of the received UCI messages may include feedback information (eg, HARQ-ACK, CSI-RS, etc.) associated with at least one transmit beam other than the one or more transmit beams .

At 1040, at least one of the _Nb transmit beams may be added to or removed from multiple beam transmissions, such as through higher layer signaling (eg, RRC, MAC, etc.).

Referring to FIG. 11, a flowchart is illustrated in accordance with various methods 1100 for assisting the reception of downlink control information associated with multiple beam transmissions described herein. In several aspects, method 1100 may be performed at a UE. In other aspects, the machine-readable medium can store instructions associated with method 1100 that, when executed, enable a UE to perform the actions of method 1100 .

At 1110, _Nb beam multiplex transmit beams may be received from one or more TPs.

At 1120, _Nb separate DCI messages may be replied from one or more search spaces (eg, a common search space, _Nb consecutive search spaces, etc.) transmitted by multiple beams.

At 1130, one or more UCI messages may be generated based on multiple beam transmissions (eg, a single joint UCI message, _Nb separate UCI messages, etc.).

At 1140, one or more UCI messages can be output for transmission to at least one of the TPs (eg, a single TP such as a TP that primarily transmits a beam or a TP that transmits a combination through higher layers, or has individual UCI messages. is output for transmission to the TP that transmits the transmit beam on which the UCI is based.

Examples herein may include subject matter such as a method, a means of performing an action, or a block of a method, at least one machine-readable medium including executable instructions, which when executed by a machine (eg, a processor with memory, an application-specific product, etc.) An integrated circuit (ASIC), Field Programmable Gate Array (FPGA) or the like) when executed causes the machine to perform method actions or device or system actions for parallel communication using multiple communication technologies in accordance with the described embodiments and examples.

Example 1 is an apparatus configured to be employed within an evolved Node B (eNB), comprising a processor configured to generate one or more downlink control information (DCI) messages, wherein the one or Each of the plurality of DCI messages is associated with a separate transmit beam of a multi-beam transmission to a user equipment (UE), wherein the multi-beam transmission includes _Nb transmit beams, where _Nb is at least 2; assigning each of the one or more DCI messages to a search space associated with one of the one or more search spaces; and outputting through transmitter circuitry for subsequent transmission during a common subframe the one or more DCI messages, wherein the processor is configured to output each of the one or more DCI messages for subsequent transmission by dividing the transmit beam by one of the Nb transmit beams By.

Example 2 includes the subject matter of any variation of Example 1, wherein the one or more search spaces comprise _Nb contiguous search spaces, wherein each of the _Nb transmit beams is associated with the _Nb contiguous search spaces is associated with one of the separate search spaces, and wherein each of the one or more DCI messages is assigned to the separate search space associated with the separate transmit beam through which the DCI message is output for subsequent launch.

Example 3 includes the subject matter of any variation of any of Examples 1-2, wherein each of the _Nb transmit beams is associated with a separate set of hybrid automatic repeat request (HARQ) processing.

Example 4 includes the subject matter of any variation of Example 3, wherein each of the one or more DCI messages indicates, via a HARQ process identifier (ID) of the DCI message, the total number N associated with the separate transmit beam One of the potential HARQ processes is the indicated HARQ process, and the DCI message is output through the split transmit beam for subsequent transmission.

Example 5 includes the subject matter of any variation of Example 4, wherein, for each of the one or more DCI messages, the HARQ process indicated is based on the HARQ process ID and through which the DCI message is output for This transmit beam transmitted subsequently is identifiable.

Example 6 includes the subject matter of any variation of Example 2, wherein a first DCI message of the one or more DCI messages is associated with a forwarding of a transmission previously sent over a transmit beam that is not transparent Instead, the first DCI message is output for the split transmit beam for subsequent transmission.

位元。Example 7 includes the subject matter of any variation of example 6, wherein the first DCI message includes a HARQ process swap indicator indicating a HARQ process associated with the forwarding, wherein the HARQ process swap indicator includes

bits.

Example 8 includes the subject matter of any variation of any of Examples 1-2, wherein the _Nb transmit beams share a common set of hybrid automatic repeat request (HARQ) processing.

Example 9 includes the subject matter of any variation of Example 8, wherein the common set of HARQ processes includes _NbxN HARQ processes, wherein each of the one or more DCI messages is configured to pass an _NbxM bit A meta HARQ process identifier (ID) indicates one of the _NbxN HARQ processes, where M is a one-bit number of a HARQ process ID associated with single beam operation.

Example 10 includes the subject matter of any variation of Example 1, wherein the one or more search spaces comprise a single common search space.

Example 11 includes the subject matter of any variation of any of Examples 2-5, wherein a first DCI message of the one or more DCI messages is associated with a forwarding of a transmission previously sent over a transmit beam, The transmit beam is not the split transmit beam through which the DCI message is output for subsequent transmission.

Example 12 includes the subject matter of any variation of Example 1, wherein each of the _Nb transmit beams is associated with a separate set of hybrid automatic repeat request (HARQ) processing.

Example 13 includes the subject matter of any variation of Example 1, wherein the _Nb transmit beams share a common set of hybrid automatic repeat request (HARQ) processing.

Example 14 is a non-transitory machine-readable medium comprising instructions that, when executed, cause an evolved Node B (eNB) to: generate one or more downlinks associated with a user equipment (UE) link control information (DCI) messages, wherein each of the one or more DCI messages is associated with one of an uplink grant to the UE or a downlink assignment to the UE; transmitting to the UE one or more transmit beams in a multi-beam transmission comprising _Nb transmit beams, wherein _Nb is at least 2, wherein each of the one or more transmit beams comprises the one one of the one or more DCI messages separates the DCI messages, and wherein each of the one or more DCI messages is transmitted through one or more search spaces associated with the UE; and one received from the UE or multiple Uplink Control Information (UCI) messages.

Example 15 includes the subject matter of any variation of example 14, wherein the one or more search spaces comprise a single search space.

Example 16 includes the subject matter of any variation of example 15, wherein each of the one or more DCI messages includes a beam indicator (BI) indicating the one of the _Nb transmit beams that include the DCI message transmit beam.

Example 17 includes the subject matter of any variation of Example 14, wherein each of the one or more DCI messages is allocated to a separate control channel element (CCE).

Example 18 includes the subject matter of any variation of example 14, wherein at least one of the one or more DCI messages is configured to have one of at least another DCI message transmitted through one of the _Nb transmit beams Common Control Channel Element (CCE).

Example 19 includes the subject matter of any variation of Example 14, wherein the one or more UCI messages include a separate UCI message for each of the one or more transmit beams, wherein each of the separate UCI messages Contains hybrid automatic repeat request (HARQ) feedback and channel state information (CSI) associated with the transmit beam.

Example 20 includes the subject matter of any variation of Example 14, wherein at least one of the one or more UCI messages includes a hybrid automatic repeat request associated with a separate transmit beam from one of the one or more transmit beams ( HARQ) feedback and Channel Status Information (CSI).

Example 21 includes the subject matter of any variation of example 14, wherein the one or more search spaces comprise _Nb contiguous search spaces.

Example 22 includes the subject matter of any variation of any of Examples 14-21, wherein the instructions, when executed, further cause the eNB to configure the UE to add or remove the multi-beam transmission through higher layer signaling. at least one of the transmit beams.

Example 23 includes the subject matter of any variation of any of Examples 14-21, wherein the higher layer signaling includes one of medium access control (MAC) signaling or radio resource control (RRC) signaling.

Example 24 includes the subject matter of any variation of any of Examples 14-16, wherein each of the one or more DCI messages is assigned to a separate control channel element (CCE).

Example 25 includes the subject matter of any variation of any of Examples 14-16, wherein at least one of the one or more DCI messages is configured to a common control channel element (CCE) with transmission through the N _b At least one other DCI message transmitted by one of the transmit beams.

Example 26 includes the subject matter of any variation of Example 14, wherein the instructions, when executed, further cause the eNB to configure the UE to add or remove at least one of the multiple beam transmissions through higher layer signaling beam.

Example 27 includes the subject matter of any variation of example 14, wherein the higher layer signaling includes one of a medium access control (MAC) signaling or a radio resource control (RRC) signaling.

Example 28 is an apparatus configured to be employed within a user equipment (UE) comprising a processor configured to receive, from a coupled receiver circuit, data including from one or more transmit points (TP) a multi-beam transmission of N _b transmit beams, where N _b is at least 2; recovering N _b separate downlinks from each of the N _b transmit beams from one or more search spaces generating one or more uplink control information (UCI) messages; and outputting the one or more UCI messages for subsequent transmission to at least one of the one or more TPs .

Example 29 includes the subject matter of any variation of example 28, wherein the one or more TPs are a single TP.

Example 30 includes the subject matter of any variation of example 28, wherein the one or more TPs include at least two separate TPs.

Example 31 includes the subject matter of any variation of any of Examples 28-30, wherein the one or more UCI messages include _Nb separate UCI messages, wherein each of the _Nb separate UCI messages includes and the Wait for one of the _Nb transmit beams to separate the feedback information associated with the transmit beams.

Example 32 includes the subject matter of any variation of example 31, wherein the processor is configured to output each of the _Nb UCI messages to the TP of the one or more TPs, wherein the UCI The transmit beam associated with the message was received from the TP.

Example 33 includes the subject matter of any variation of any of examples 28-30, wherein the one or more UCI messages include a single UCI message, wherein the single UCI message includes a UCI message associated with each of the _Nb transmit beams Joint Feedback Information.

Example 34 includes the subject matter of any variation of any of examples 28-30, wherein the processor is configured to output the one or more UCI messages to a single TP.

Example 35 includes the subject matter of any variation of example 34, wherein the single TP is the TP from which a primary beam of the _Nb transmit beams is received.

Example 36 includes the subject matter of any variation of example 34, wherein the processor is configured to receive, through the receiver circuit, higher layer signaling indicative of the single TP from the one or more TPs.

Example 37 includes the subject matter of any variation of example 28, wherein the one or more UCI messages comprise _Nb separate UCI messages, wherein each of the _Nb separate UCI messages comprises and the _Nb transmit beams One of the feedback information associated with separate transmit beams.

Example 38 includes the subject matter of any variation of example 37, wherein the processor is configured to output each of the N _b UCI messages to the TP of the one or more TPs that are associated with the UCI The transmit beam associated with the message is from the TP from which it was received.

Example 39 includes the subject matter of any variation of example 28, wherein the one or more UCI messages include a single UCI message, wherein the single UCI message includes joint feedback information associated with each of the _Nb transmit beams.

Example 40 includes the subject matter of any variation of example 28, wherein the processor is configured to output the one or more UCI messages to a single TP.

Example 41 includes the subject matter of any variation of example 40, wherein the single TP is the TP from which a primary beam of the _Nb transmit beams is received.

Example 42 includes the subject matter of any variation of example 40, wherein the processor is configured to receive, through the receiver circuit, higher layer signaling that indicates the single TP from the one or more TPs.

Example 43 is a method configured to be employed within an evolved Node B (eNB), comprising: generating one or more downlink control information (DCI) messages associated with a user equipment (UE), wherein each of the one or more DCI messages is associated with one of an uplink grant to the UE or a downlink assignment to the UE; _a one or more transmit beams of the multi-beam transmission are transmitted to the UE, wherein _Nb is at least 2, wherein each of the one or more transmit beams includes one of the one or more DCI messages separated DCI messages, and each of the one or more DCI messages are transmitted through one or more search spaces associated with the UE; and receive one or more uplink control information (UCI) from the UE message.

Example 44 includes the subject matter of any variation of example 43, wherein the one or more search spaces comprise a single search space.

Example 45 includes the subject matter of any variation of example 44, wherein each of the one or more DCI messages includes a beam indicator (BI) indicating the transmit beam of the _Nb transmit beams that includes the DCI message .

Example 46 includes the subject matter of any variation of example 43, wherein each of the one or more DCI messages is assigned to a separate control channel element (CCE).

Example 47 includes the subject matter of any variation of example 43, wherein at least one of the one or more DCI messages is configured to a common control channel element (CCE) with transmission through one of the _Nb transmit beams at least another DCI message transmitted by the sender.

Example 48 includes the subject matter of any variation of example 43, wherein the one or more UCI messages include a separate UCI message for each of the one or more transmit beams, wherein each of the separate UCI messages Contains hybrid automatic repeat request (HARQ) feedback and channel state information (CSI) associated with the transmit beam.

Example 49 includes the subject matter of any variation of example 43, wherein at least one of the one or more UCI messages includes a hybrid automatic repeat request associated with a separate transmit beam from one of the one or more transmit beams (HARQ) feedback and channel status information (CSI).

Example 50 includes the subject matter of any variation of example 43, wherein the one or more search spaces comprise _Nb contiguous search spaces.

Example 51 includes the subject matter of any variation of any of Examples 43-50, wherein the instructions, when executed, further cause the eNB to configure the UE to add or remove the multiple beams through higher layer signaling At least one of the transmit beams is transmitted.

Example 52 includes the subject matter of any variation of any of examples 43-50, wherein the higher layer signaling includes one of medium access control (MAC) signaling or radio resource control (RRC) signaling.

Example 53 is a non-transitory machine-readable medium comprising instructions that, when executed, cause an evolved Node B (eNB) to perform the method of any of Examples 43-52.

Example 54 is an apparatus configured to be employed within an evolved Node B (eNB), including means for processing and means for transmission. The means for processing are configured to generate one or more downlink control information (DCI) messages, wherein each of the one or more DCI messages is associated with a user equipment (UE) A separate transmit beam associated with a multiple beam transmission, wherein the multiple beam transmission includes _Nb transmit beams, where _Nb is at least 2; and assigning each of the one or more DCI messages to a or a search space associated with one of more search spaces. The means for transmitting is configured to transmit the one or more DCI messages during a common subframe, wherein the means for transmitting is configured to transmit through one of the _Nb transmit beams A separate transmit beam transmits each of the one or more DCI messages.

Example 55 includes the subject matter of any variation of example 54, wherein the one or more search spaces comprise _Nb contiguous search spaces, wherein each of the _Nb transmit beams is associated with the _Nb contiguous search spaces is associated with one of the separate search spaces, and wherein each of the one or more DCI messages is assigned to the separate search space associated with the separate transmit beam through which the DCI message is output for subsequent launch.

Example 56 includes the subject matter of any variation of any of examples 54-55, wherein each of the _Nb transmit beams is associated with a separate set of hybrid automatic repeat request (HARQ) processing.

Example 57 includes the subject matter of any variation of example 56, wherein each of the one or more DCI messages, via a HARQ process identifier (ID) of the DCI message, indicates the total number N associated with the separate transmit beam The DCI message is output for subsequent transmission through the split transmit beam for the indicated HARQ process of one of the potential HARQ processes.

Example 58 includes the subject matter of any variation of example 57, wherein, for each of the one or more DCI messages, based on the HARQ process ID and the transmit beam through which the DCI message is output for subsequent transmission, The indicated HARQ process is identifiable.

Example 59 includes the subject matter of any variation of example 55, wherein a first DCI message of the one or more DCI messages is associated with a forwarding of a transmission previously sent over a transmit beam that is not transparent Instead, the DCI message is output for the split transmit beams that are subsequently transmitted.

位元。Example 60 includes the subject matter of any variation of example 59, wherein the first DCI message includes a HARQ process swap indicator indicating a HARQ process associated with the forwarding, wherein the HARQ process swap indicator includes

bits.

Example 61 includes the subject matter of any variation of any of Examples 54-55, wherein the _Nb transmit beams share a common set of hybrid automatic repeat request (HARQ) processes.

Example 62 includes the subject matter of any variation of example 61, wherein the common set of HARQ processes includes _NbxN HARQ processes, wherein each of the one or more DCI messages is configured to pass an _NbxM bit A meta-HARQ process identifier (ID) indicates one of the _NbxN HARQ processes, where M is the number of bits of a HARQ process ID associated with single beam operation.

Example 63 includes the subject matter of any variation of example 54, wherein the one or more search spaces comprise a single common search space.

Example 64 is an apparatus configured to be employed within a user equipment (UE) comprising means for receiving, means for processing, and means for transmitting. The means for receiving is configured to receive a multi-beam transmission comprising _Nb transmit beams from one or more transmit points (TPs), where _Nb is at least two. The means for processing are configured to reply from one or more search spaces to _Nb separate downlink control information (DCI) messages for each of the _Nb transmit beams; and to generate one or more Uplink Control Information (UCI) messages. The means for transmitting is configured to transmit the one or more UCI messages to at least one of the one or more TPs.

Example 65 includes the subject matter of any variation of any of Examples 1-13, wherein the processor is a baseband processor.

The foregoing descriptions of specific embodiments disclosed herein, including those described in the Abstract, are not intended to be mutually exclusive or to limit the disclosed embodiments to the precise forms disclosed. While specific embodiments and examples are described herein for purposes of illustration, various modifications are possible that are deemed to fall within the scope of such embodiments and examples, as those skilled in the relevant art will understand.

In this regard, although the subject matter disclosed has been described in connection with various embodiments and corresponding drawings, it is to be understood that, where applicable, other similar embodiments may be used or modifications may be made to the described embodiments without departing from the subject matter and addition of the same, similar, alternative, or substitute functions for carrying out the disclosed subject matter. Thus, the disclosed subject matter should not be limited to any single embodiment described herein, but rather should be construed in breadth and scope in accordance with the appended claims below.

In particular with respect to the various functions performed by the components or structures (assemblies, devices, circuits, systems, etc.) previously described, unless otherwise indicated, the terms used to describe such components (including references to "components") are It is intended to correspond to any component or structure (eg, functionally equivalent) that performs the specified function of the described component, even if not structurally equivalent to the disclosed structure performing that function in the specific embodiments illustrated herein. Furthermore, although only a particular feature has been disclosed with respect to one of several embodiments, such feature may be combined with one or more other features of other embodiments, as may be desirable and advantageous for any given or particular application .

100: User Equipment (UE) Device 102: Application Circuits 104: Fundamental frequency circuit 104a: Second Generation (2G) Baseband Processor 104b: Third Generation (3G) Baseband Processor 104b: Fourth generation (4G) baseband processor 104d: Other baseband processors 104e: Central Processing Unit (CPU) 104f: Audio Digital Signal Processor (DSP) 106: Radio Frequency (RF) Circuits 106a: Mixer Circuits 106b: Amplifier Circuits 106c: Filter circuit 106d: Synthesizer Circuits 108: Front end module (FEM) circuit 110: Antenna 400, 500: System 410, 520: Processor 420, 530: Transmitter circuits 430, 540: Memory 510: Receiver circuit 1000, 1100: method 1010-1040, 1110-1140: Blocks

FIG. 1 is a block diagram illustrating an example of a user equipment (UE) useful in connection with the various orientations described herein.

2 is a schematic diagram illustrating an example of multiple (dual in the example shown) beam transmission scenarios within various oriented transmit points (TPs) described herein, in which a serving TP may transmit control signaling.

3 is a schematic diagram illustrating an example of multiple (dual in the example shown) beam transmission scenarios within various oriented transmit points (TPs) described herein, wherein a serving TP and/or an auxiliary TP may transmit control signaling.

4 is a block diagram illustrating various systems for facilitating the generation and communication of downlink control signaling for multiple beam transmissions from a base station in accordance with the description herein.

5 is a block diagram illustrating a system for the reception and generation of uplink control messages in accordance with various aspects described herein to assist a user equipment (UE) in receiving downlink control messages associated with multi-beam transmission.

6 is a schematic diagram illustrating an example configuration of a search space oriented for dual beam operation in accordance with the various described herein.

7 is a diagram illustrating one example of various HARQ processing indications for independent HARQ operation in a dual beam scenario in accordance with the description herein.

8 is a schematic diagram illustrating an example of a dual-beam scenario for transposing flags for HARQ indication based on a beam-to-HARQ process in accordance with various aspects described herein.

9 is a schematic diagram illustrating an example of a two-beam scenario in accordance with various HARQ processing indications oriented for a common search space described herein.

10 is a flow diagram illustrating an example of a method for assisting in the generation of downlink control information for multi-beam transmission, including beam transmission from a base station, in accordance with various aspects described herein.

11 is a flow diagram illustrating an example of a method of facilitating the reception of downlink control information associated with a multiple beam transmission to a UE in accordance with various aspects described herein.

1000: Method

1010-1040: Blocks

Claims (24)

A user equipment (UE) comprising one or more processors configured to receive two or more downlink control information (DCI) messages, wherein each of the DCI messages is received at On a respective associated search space of one of the same subframes, wherein each of the two or more DCI messages is associated with a respective transmit beam of a plurality of beams that are one or more transmit points used for transmission to the UE, wherein the plurality of beams includes _Nb transmit beams, where _Nb is at least 2; and for the two or more downlink control information (DCI) messages Each Downlink Control Information (DCI) message receives a corresponding Physical Downlink Shared Channel (PDSCH) transmission. The user equipment of claim 1, wherein each of the two or more DCI messages indicates a respective Hybrid Automatic Repeat Request (HARQ) process identifier (ID) for the corresponding PDSCH transmission. The user equipment of claim 2, wherein each of the two or more DCI messages indicates a respective HARQ process ID selected from a common set of HARQ process IDs. The UE of claim 1, wherein the associated search spaces of the two or more DCI messages overlap in time. The user equipment of claim 1, wherein the one or more processors are configured to: generate one or more uplink control information (UCI) messages; and output the one or more UCI messages for subsequent transmission . The user equipment of claim 5, wherein the one or more UCI messages include N _b different UCI messages, wherein each UCI message of the one or more UCI messages includes a difference between the one or more UCI messages and the two or more DCI messages Feedback information associated with a respective DCI message. The user equipment of claim 5, wherein the one or more UCI messages comprise a single UCI message, wherein the single UCI message comprises joint feedback information associated with the two or more DCI messages. The user equipment of claim 1, wherein the one or more processors are configured to generate one or more HARQ-ACK messages, the one or more HARQ-ACK messages communicated with the two or more DCIs feedback information associated with the message; and outputting the one or more HARQ-ACK messages for subsequent transmission. The user equipment of claim 8, wherein the one or more HARQ-ACK messages include _Nb different messages, wherein each HARQ-ACK message of the _Nb HARQ-ACK messages includes and the two or more HARQ-ACK messages Feedback information associated with a respective DCI message of each DCI message. The user equipment of claim 8, wherein the one or more HARQ-ACK messages comprise a single HARQ-ACK message, wherein the single HARQ-ACK message comprises and the two or more The federated feedback information associated with the DCI message. The user equipment of claim 1, wherein the N _b transmit beams correspond to N _b transmit points. A transmission point comprising one or more processors configured to: transmit a first downlink control information (DCI) message to a user equipment (UE), wherein the first DCI message is transmitted on an associated search space in a subframe, wherein the subframe includes a second DCI message transmitted by a second transmission point to the UE, wherein the first DCI message and the second DCI messages are each associated with a respective transmit beam of _a plurality of beams for transmission to the UE, wherein the plurality of beams includes N transmit beams, wherein N is at least ₂ ; and for the first A (DCI) message is transmitted with a corresponding Physical Downlink Shared Channel (PDSCH) transmission. The transmission point of claim 12, wherein each of the first DCI message and the second DCI message indicates a respective HARQ process ID for the corresponding PDSCH transmission. The transmission point of claim 13, wherein each of the first DCI message and the second DCI message indicates a respective HARQ process ID selected from a common set of HARQ process IDs. The transmission point of claim 12, wherein the associated search spaces for the first DCI message and the second DCI message overlap in time. The transmit point of claim 12, wherein the one or more processors are configured to: receive one or more uplink control information (UCI) information; and cause subsequent PDSCH transmissions based on the one or more UCI information to launch. The transmission point of claim 16, wherein the one or more UCI messages include N _b different UCI messages, wherein each UCI message of the N _b different UCI messages includes a different one of the N _b different DCI messages Feedback information associated with respective DCI messages, wherein the N _b different DCI messages include the first DCI message and the second DCI message. The transmission point of claim 16, wherein the one or more UCI messages comprise a single UCI message, wherein the single UCI message comprises joint feedback information associated with the first DCI message and the second DCI message. The transmit point of claim 12, wherein the one or more processors are configured to: receive one or more HARQ-ACK messages, the one or more HARQ-ACK messages conveying the two or more DCI messages associated feedback information; and causing subsequent PDSCH transmissions to be transmitted based on the one or more HARQ-ACK messages for subsequent transmissions. The transmission point of claim 19, wherein the one or more HARQ-ACK messages comprise _Nb different UCI messages, wherein each HARQ-ACK message of the _Nb HARQ-ACK messages comprises and the two or more HARQ-ACK messages Feedback information associated with respective DCI messages of each DCI message. The transmission point of claim 19, wherein the one or more HARQ-ACK messages comprise a single HARQ-ACK message, wherein the single HARQ-ACK message comprises a joint feedback associated with the two or more DCI messages News. A method of user equipment (UE), comprising: receiving two or more downlink control information (DCI) messages, wherein each of each of the DCI messages is received in one of the same subframes, respectively On an associated search space, wherein each of the two or more DCI messages is associated with a respective transmit beam of a plurality of beams used by one or more transmit points for transmission to the UE, wherein the plurality of beams includes _Nb transmit beams, where _Nb is at least 2; and receiving two or more physical downlink shared channel (PDSCH) transmissions, wherein each PDSCH transmission corresponds to the two or One Downlink Control Information (DCI) message of a plurality of Downlink Control Information (DCI) messages. The method of claim 22, comprising: generating _Nb HARQ-ACK messages, wherein each HARQ-ACK message of the _Nb different HARQ-ACK messages includes a respective one of the two or more PDSCH transmissions PDSCH transmits associated feedback information; and transmits the _Nb HARQ-ACK messages. As in the method of claim 22, it includes: generating a HARQ-ACK message including joint feedback information associated with the two or more PDSCH transmissions; and transmitting the HARQ-ACK message.

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