Method for configuring group common DCI for MU-MIMO

Abstract

For MU-MIMO, the base station may perform beamforming for a group of UEs including UEs arranged close to each other in space. The base station may generate group-common DCI including beam indication and / or PL-RS indication for the group of UEs. The ID included in the group-common DCI may be group-specific for the group of UEs or UE-specific for a particular UE. The beam indication for different channels may be indicated by RNTI or RRC.

Description

Background Technical Field

[0001] The present disclosure generally relates to communication systems, and more particularly, to a method for configuring group common downlink control information (DCI) for multi-user (MU) multiple-input multiple-output (MIMO) (MU-MIMO) uplink / downlink communication. Background Art

[0003] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasting. A typical wireless communication system may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources. Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems.

[0004] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at the municipal, national, regional, or even global level. An example telecommunication standard is 5G New Radio (NR). 5G NR is part of the continuous mobile broadband evolution promulgated by the Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with the Internet of Things (IoT)), and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable low latency communication (URLLC). Some aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard. There is a need to further improve 5G NR technology. These improvements are also applicable to other multiple access technologies and telecommunication standards that employ these technologies. Summary of the Invention

[0005] A brief overview of one or more aspects is presented below to provide a basic understanding of these aspects. This overview is not an extensive review of all contemplated aspects, and is neither intended to identify key or critical elements of all aspects, nor to delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.

[0006] In one aspect of the present disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a user equipment (UE) or a base station. The base station may generate a beamformed signal and transmit the beamformed signal to a group of UEs, the group of UEs including a set of UEs that are arranged close to each other in space for MU-MIMO. The base station may generate group common DCI for the group of UEs, including a beam indication or a path loss reference signal (PL-RS) indication. An identifier (ID) included in the group common DCI may be group-specific for the group of UEs or UE-specific for each UE. The beam indication for different channels may be indicated by a radio network temporary identifier (RNTI) or via radio resource control (RRC) signaling.

[0007] To achieve the foregoing and related purposes, one or more aspects include the features that are fully described hereinafter and particularly pointed out in the claims. The following description and the drawings set forth in detail certain illustrative features of one or more aspects. However, these features are only indicative of some of the various ways in which the principles of the various aspects may be employed, and this description is intended to include all such aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a diagram illustrating an example of a wireless communication system and an access network.

[0009] Figure 2A 、 Figure 2B 、 Figure 2C and Figure 2D are diagrams respectively illustrating examples of a first 5G / NR frame, DL channels within a 5G / NR subframe, a second 5G / NR frame, and UL channels within a 5G / NR subframe.

[0010] Figure 3 is a diagram illustrating an example of a base station and a UE in an access network.

[0011] Figure 4 is a diagram illustrating a configuration of group common DCI for MU-MIMO communication.

[0012] Figure 5 is a call flow diagram illustrating a configuration of group common DCI for MU-MIMO wireless communication between a base station and a UE.

[0013] Figure 6 is a set of diagrams illustrating group common DCI including resource blocks.

[0014] Figure 7 is a flowchart of a method of wireless communication of a UE using group common DCI.

[0015] Figure 8Flowchart of a method for wireless communication of a base station using group common DCI. Detailed implementation manners

[0016] The detailed implementation manners described below in conjunction with the accompanying drawings are intended as descriptions of various configurations and are not intended to represent the only configurations in which the concepts described herein can be practiced. The detailed implementation manners include specific details for the purpose of providing a thorough understanding of the various concepts. However, it will be apparent to those skilled in the art that these concepts can be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form to avoid obscuring the concepts.

[0017] Several aspects of a telecommunication system will now be presented with reference to various apparatuses and methods. These apparatuses and methods will be described in the following detailed implementation manners and are illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as "elements"). These elements can be implemented using electronic hardware, computer software, or any combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints of the overall system.

[0018] For example, an element or any part of an element or any combination of elements can be implemented as a "processing system" including one or more processors. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, system on a chip (SoCs), baseband processors, field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functions described throughout this disclosure. One or more processors in the processing system can execute software. Software should be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executable programs, execution threads, processes, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

[0019] Thus, in one or more example embodiments, the described functionality may be implemented in hardware, software, or any combination thereof. If implemented in software, the functions may be stored on or encoded as one or more instructions or code on a computer-readable medium. A computer-readable medium includes a computer storage medium. The storage medium may be any available medium that can be accessed by a computer. By way of example and not limitation, such computer-readable media may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of the aforementioned types of computer-readable media, or any other medium that can be used to store computer-executable code in the form of instructions or data structures accessible by a computer.

[0020] Figure 1 FIG. is a diagram illustrating an example of a wireless communication system and an access network 100. The wireless communication system (also referred to as a wireless wide area network (WWAN)) includes a base station 102, a UE 104, an evolved packet core (EPC) 160, and another core network 190 (e.g., a 5G core (5GC)). The base station 102 may include a macro cell (high-power cellular base station) and / or a small cell (low-power cellular base station). The macro cell includes a base station. The small cell includes a femto cell, a pico cell, and a micro cell.

[0021] The base station 102 configured for 4G LTE (collectively referred to as the evolved universal mobile telecommunications system (UMTS) terrestrial radio access network (E-UTRAN)) may interface with the EPC 160 via a first backhaul link 132 (e.g., an S1 interface). The base station 102 configured for 5G NR (collectively referred to as the next-generation RAN (NG-RAN)) may interface with the core network 190 via a second backhaul link 184. In addition to other functions, the base station 102 may perform one or more of the following functions: user data transmission, radio channel encryption and decryption, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection establishment and release, load balancing, distribution of non-access stratum (NAS) messages, NAS node selection, synchronization, radio access network (RAN) sharing, multimedia broadcast multicast service (MBMS), subscriber and device tracking, radio access network information management (RIM), paging, positioning, and delivery of warning messages. The base stations 102 may communicate with each other directly or indirectly (e.g., via the EPC 160 or the core network 190) via a third backhaul link 134 (e.g., an X2 interface). The third backhaul link 134 may be wired or wireless.

[0022] Base station 102 can communicate wirelessly with UE 104. Each base station 102 can provide communication coverage for a corresponding geographical coverage area 110. There may be overlapping geographical coverage areas 110. For example, small cell 102’ may have a coverage area 110’ that overlaps with the coverage areas 110 of one or more macro base stations 102. A network including both small cells and macro cells can be referred to as a heterogeneous network. The heterogeneous network may also include a Home evolved Node B (eNB) (HeNB), which can provide services to a restricted group called a Closed Subscriber Group (CSG). The communication link 120 between the base station 102 and the UE 104 can include an uplink (UL) (also referred to as a reverse link) transmission from the UE 104 to the base station 102 and / or a downlink (DL) (also referred to as a forward link) transmission from the base station 102 to the UE 104. The communication link 120 can use MIMO antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity. The communication link can pass through one or more carriers. The base station 102 / UE 104 can use a spectrum of up to Y MHz per carrier (e.g., 5, 10, 15, 20, 100, 400, etc. MHz) in carrier aggregation of up to Yx MHz (x component carriers) allocated for transmission in each direction. These carriers can be adjacent to each other or may not be adjacent to each other. The allocation of carriers can be asymmetric with respect to the DL and UL (e.g., more or fewer carriers can be allocated for the DL than for the UL). The component carriers can include a primary component carrier and one or more secondary component carriers. The primary component carrier can be referred to as the Primary Cell (PCell), and the secondary component carriers can be referred to as Secondary Cells (SCells).

[0023] Certain UEs 104 can communicate with each other using device-to-device (D2D) communication links 158. The D2D communication links 158 can use DL / UL WWAN spectrum. The D2D communication links 158 can use one or more sidelink channels, such as the Physical Sidelink Broadcast Channel (PSBCH), the Physical Sidelink Discovery Channel (PSDCH), the Physical Sidelink Shared Channel (PSSCH), and the Physical Sidelink Control Channel (PSCCH). D2D communication can be through various wireless D2D communication systems, such as, for example, WiMedia, Bluetooth, ZigBee, Wi-Fi based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, LTE, or NR.

[0024] The wireless communication system may also include a Wi-Fi Access Point (AP) 150 that communicates with a Wi-Fi Station (STA) 152 via a communication link 154 in the 5 GHz unlicensed spectrum. When communicating in the unlicensed spectrum, the STA 152 / AP 150 can perform a Clear Channel Assessment (CCA) before communication to determine whether the channel is available.

[0025] The small cell 102’ can operate in licensed and / or unlicensed spectrum. When operating in unlicensed spectrum, the small cell 102’ can adopt NR and use the same 5 GHz unlicensed spectrum as that used by the Wi-Fi AP 150. The small cell 102’ adopting NR in unlicensed spectrum can expand the coverage of the access network and / or increase the capacity of the access network.

[0026] The base station 102, whether it is a small cell 102’ or a large cell (e.g., a macro base station), can include and / or be referred to as an eNB, a gNodeB (gNB), or another type of base station. Some base stations (such as the gNB 180) can communicate with the UE 104 in a traditional sub-6 GHz spectrum, at millimeter wave (mmW) frequencies, and / or near mmW frequencies. When the gNB 180 operates at mmW or near mmW frequencies, the gNB 180 can be referred to as an mmW base station. The extremely high frequency (EHF) is a part of the RF in the electromagnetic spectrum. EHF has a range of 30 GHz to 300 GHz, with wavelengths between 1 millimeter and 10 millimeters. The radio waves in the frequency band can be referred to as millimeter waves. Near mmW can extend down to a frequency of 3 GHz, with a wavelength of 100 millimeters. The super high frequency (SHF) band extends between 3 GHz and 30 GHz and is also referred to as centimeter waves. Communication using the mmW / near mmW radio frequency (RF) band (e.g., 3 GHz–300 GHz) has extremely high path loss and a short range. The mmW base station 180 can utilize beamforming 182 with the UE 104 to compensate for the extremely high path loss and short range. The base station 180 and the UE 104 can each include multiple antennas, such as antenna elements, antenna panels, and / or antenna arrays, to facilitate beamforming.

[0027] The base station 180 can send beamformed signals to the UE 104 in one or more transmission directions 182’. The UE 104 can receive beamformed signals from the base station 180 in one or more reception directions 182”. The UE 104 can also send beamformed signals to the base station 180 in one or more transmission directions. The base station 180 can receive beamformed signals from the UE 104 in one or more reception directions. The base station 180 / UE 104 can perform beam training to determine the optimal reception and transmission directions for each base station 180 / UE 104. The transmission and reception directions of the base station 180 can be the same or can be different. The transmission and reception directions of the UE 104 can be the same or can be different.

[0028] The EPC 160 may include a Mobility Management Entity (MME) 162, other MMEs 164, a Serving Gateway 166, a Multimedia Broadcast Multicast Service (MBMS) Gateway 168, a Broadcast Multicast Service Center (BM-SC) 170, and a Packet Data Network (PDN) Gateway 172. The MME 162 may communicate with a Home Subscriber Server (HSS) 174. The MME 162 is a control node that processes signaling between the UE 104 and the EPC 160. Generally, the MME 162 provides bearer and connection management. All User Internet Protocol (IP) packets are transported through the Serving Gateway 166, which itself is connected to the PDN Gateway 172. The PDN Gateway 172 provides UE IP address allocation and other functions. The PDN Gateway 172 and the BM-SC 170 are connected to an IP service 176. The IP service 176 may include the Internet, an intranet, an IP Multimedia Subsystem (IMS), a PS streaming service, and / or other IP services. The BM-SC 170 may provide functions for MBMS user service provisioning and delivery. The BM-SC 170 may serve as an entry point for content provider MBMS transmissions, may be used to authorize and initiate MBMS bearer services within a Public Land Mobile Network (PLMN), and may be used to schedule MBMS transmissions. The MBMS Gateway 168 may be used to distribute MBMS services to base stations 102 belonging to a Multicast Broadcast Single Frequency Network (MBSFN) area for a particular broadcast service, and may be responsible for session management (start / stop) and collecting charging information related to eMBMS.

[0029] The core network 190 may include an Access and Mobility Management Function (AMF) 192, other AMFs 193, a Session Management Function (SMF) 194, and a User Plane Function (UPF) 195. The AMF 192 may communicate with a Unified Data Management (UDM) 196. The AMF 192 is a control node that processes signaling between the UE 104 and the core network 190. Generally, the AMF 192 provides QoS flow and session management. All User Internet Protocol (IP) packets are transmitted through the UPF 195. The UPF 195 provides UE IP address allocation and other functions. The UPF 195 is connected to an IP service 197. The IP service 197 may include the Internet, an intranet, an IP Multimedia Subsystem (IMS), a Packet Switched (PS) stream (PSS) service, and / or other IP services.

[0030] A base station may include and / or be referred to as a gNB, Node B, eNB, access point, base station transceiver, radio base station, radio transceiver, transceiver function, basic service set (BSS), extended service set (ESS), transmission and reception point (TRP), or some other suitable term. Base station 102 provides an access point for UE 104 to EPC 160 or core network 190. Examples of UE 104 include cellular phones, smart phones, session initiation protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, tablet computers, smart devices, wearable devices, vehicles, electricity meters, gas pumps, large or small kitchen appliances, health devices, implants, sensors / actuators, displays, or any other similar functional devices. Some UEs 104 may be referred to as IoT devices (e.g., parking meters, gas pumps, toasters, vehicles, heart monitors, etc.). UE 104 may also be referred to as a station, mobile station, subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.

[0031] Referring again to Figure 1 , in some aspects, UE 104 and base station 102 / 180 may be configured for MU-MIMO uplink / downlink communication with group common DCI (198) for a UE group, which UE group includes a set of UEs arranged close to each other in space. The base station may generate a beamformed signal and transmit it to a UE group for MU-MIMO that includes UEs close to each other in space. The base station may generate group common DCI for the UE group that includes a beam indication or a path loss reference signal (PL-RS) indication. The ID included in the group common DCI may be group-specific for the UE group or UE-specific for a particular UE. The beam indication for different channels may be indicated by an RNTI or via RRC signaling.

[0032] Figure 2A FIG. 200 is an example showing a first subframe within the 5G / NR frame structure. Figure 2B FIG. 230 is an example showing DL channels within a 5G / NR subframe. Figure 2C FIG. 250 is an example showing a second subframe within the 5G / NR frame structure. Figure 2DFIG. 280 is an example showing UL channels within a 5G / NR subframe. The 5G / NR frame structure can be Frequency Division Duplexing (FDD), where for a particular set of subcarriers (carrier system bandwidth), the subframes within that set of subcarriers are dedicated to DL or UL, or it can be Time Division Duplexing (TDD), where for a particular set of subcarriers (carrier system bandwidth), the subframes within that set of subcarriers are dedicated to both DL and UL. In the example provided by Figure 2A and Figure 2C , the 5G / NR frame structure is assumed to be TDD, where subframe 4 is configured with slot format 28 (mostly DL), where D is DL, U is UL, and X is flexibly used between DL / UL, and subframe 3 is configured with slot format 34 (mostly UL). Although subframes 3 and 4 are shown as having slot formats 34 and 28 respectively, any particular subframe can be configured with any one of the various available slot formats 0 - 61. Slot formats 0 and 1 are DL and UL respectively. The other slot formats 2 - 61 include a mixture of DL, UL, and flexible symbols. The UE is configured with a slot format by a received Slot Format Indicator (SFI) (dynamically via DCI, or semi-statically / statically via RRC signaling). Note that the following description also applies to the 5G / NR frame structure as TDD.

[0033] Other wireless communication technologies can have different frame structures and / or different channels. A frame (10 ms) can be divided into 10 equally sized subframes (1 ms). Each subframe can include one or more time slots. A subframe can also include mini-slots, which can include 7, 4, or 2 symbols. Depending on the slot configuration, each time slot can include 7 or 14 symbols. For slot configuration 0, each time slot can include 14 symbols, and for slot configuration 1, each time slot can include 7 symbols. The symbols on the DL can be Cyclic Prefix (CP) OFDM (CP - OFDM) symbols. The symbols on the UL can be CP - OFDM symbols (for high throughput scenarios) or Discrete Fourier Transform (DFT) spread OFDM (DFT - s - OFDM) symbols (also known as Single Carrier Frequency Division Multiple Access (SC - FDMA) symbols) (for power - limited scenarios; limited to single - stream transmission). The number of time slots in a subframe is based on the slot configuration and the parameter set. For slot configuration 0, the different parameter sets μ0 to 5 respectively allow 1, 2, 4, 8, 16, and 32 time slots per subframe. For slot configuration 1, the different parameter sets 0 to 2 respectively allow 2, 4, and 8 time slots per subframe. Thus, for slot configuration 0 and parameter set μ, there are 14 symbols / slot and 2 μ time slots / subframe. The subcarrier spacing and symbol length / duration are functions of the parameter set. The subcarrier spacing can be equal to 2 μ*15 kHz, where μ is a parameter set from 0 to 5. Thus, the subcarrier spacing for parameter set μ = 0 is 15 kHz, and the subcarrier spacing for parameter set μ = 5 is 480 kHz. The symbol length / duration is inversely related to the subcarrier spacing. Figures 2A - 2D An example of slot configuration 0 with 14 symbols per time slot and parameter set μ = 2 with 4 time slots per subframe is provided. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 μs.

[0034] The resource grid can be used to represent the frame structure. Each time slot includes a resource block (RB) (also known as a physical RB (PRB)) that spans 12 consecutive subcarriers. The resource grid is divided into multiple resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0035] As Figure 2A shown, some REs carry reference (pilot) signals (RS) for the UE. The RS can include demodulation RS (DM-RS) (denoted as R x , where 100x is the port number, but other DM-RS configurations are also possible) and channel state information reference signals (CSI-RS) for channel estimation at the UE. The RS can also include beam measurement RS (BRS), beam refinement RS (BRRS), and phase tracking RS (PT-RS).

[0036] Figure 2B Examples of various DL channels within a subframe of a frame are shown. The physical downlink control channel (PDCCH) carries DCI within one or more control channel elements (CCEs), each CCE including nine resource element groups (REGs), each REG including four consecutive REs in an OFDM symbol. The primary synchronization signal (PSS) can be in symbol 2 of a specific subframe of the frame. The PSS is used by the UE 104 to determine subframe / symbol timing and the physical layer identity. The secondary synchronization signal (SSS) can be in symbol 4 of a specific subframe of the frame. The SSS is used by the UE to determine the physical layer cell identity group number and radio frame timing. Based on the physical layer identity and the physical layer cell identity group number, the UE can determine the physical cell identifier (PCI). Based on the PCI, the UE can determine the location of the aforementioned DM-RS. The physical broadcast channel (PBCH) carrying the master information block (MIB) can be logically grouped with the PSS and SSS to form a synchronization signal (SS) / PBCH block. The MIB provides the number of RBs in the system bandwidth and the system frame number (SFN). The physical downlink shared channel (PDSCH) carries user data, broadcast system information not transmitted through the PBCH (such as system information blocks (SIBs)), and paging messages.

[0037] As Figure 2CAs shown, some REs carry DM-RS (denoted as R for a specific configuration, but other DM-RS configurations are also possible) for channel estimation at the base station. The UE can send DM-RS for the physical uplink control channel (PUCCH) and DM-RS for the physical uplink shared channel (PUSCH). The PUSCH DM-RS can be sent in the previous one or two symbols of the PUSCH. The PUCCH DM-RS can be sent in different configurations, depending on whether a short PUCCH or a long PUCCH is being sent, and depending on the specific PUCCH format used. The UE can send a sounding reference signal (SRS). The SRS can be sent in the last symbol of a subframe. The SRS can have a comb structure, and the UE can send the SRS on one of the combs. The SRS can be used by the base station for channel quality estimation to enable frequency-dependent scheduling on the UL.

[0038] Figure 2D Examples of various UL channels within a subframe of a frame are shown. The PUCCH can be located as indicated in one configuration. The PUCCH carries uplink control information (UCI), such as a scheduling request, a channel quality indicator (CQI), a precoding matrix indicator (PMI), a rank indicator (RI), and hybrid automatic repeat request (HARQ) ACK / NACK feedback. The PUSCH carries data and can additionally be used to carry a buffer status report (BSR), a power headroom report (PHR), and / or UCI.

[0039] Figure 3It is a block diagram of the communication between the base station 310 and the UE 350 in the access network. In the DL, the IP packets from the EPC 160 can be provided to the controller / processor 375. The controller / processor 375 implements layer 3 and layer 2 functions. Layer 3 includes the radio resource control (RRC) layer, and layer 2 includes the service data adaptation protocol (SDAP) layer, the packet data convergence protocol (PDCP) layer, the radio link control (RLC) layer, and the media access control (MAC) layer. The controller / processor 375 provides RRC layer functions associated with the broadcast of system information (e.g., MIB, SIB), RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release), inter-radio access technology (RAT) mobility, and measurement configuration for UE measurement reporting; PDCP layer functions associated with header compression / decompression, security (encryption, decryption, integrity protection, integrity verification), and handover support functions; RLC layer functions associated with the transfer of upper layer packet data units (PDUs), error correction via ARQ, concatenation, segmentation, and reassembly of RLC service data units (SDUs), re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functions associated with the mapping between logical channels and transport channels, multiplexing of MAC SDUs onto transport blocks (TBs), demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction via HARQ, priority handling, and logical channel prioritization.

[0040] The transmit (TX) processor 316 and the receive (RX) processor 370 implement layer 1 functions associated with various signal processing functions. Layer 1, which includes the physical (PHY) layer, may include error detection on the transport channel, forward error correction (FEC) coding / decoding of the transport channel, interleaving, rate matching, mapping to the physical channel, modulation / demodulation of the physical channel, and MIMO antenna processing. The TX processor 316 processes the mapping to the signal constellation based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The coded and modulated symbols may then be split into parallel streams. Each stream may then be mapped to OFDM subcarriers, multiplexed with reference signals (e.g., pilots) in the time domain and / or frequency domain, and then combined together using an inverse fast Fourier transform (IFFT) to generate a physical channel carrying a stream of time-domain OFDM symbols. The OFDM stream is space precoded to generate multiple spatial streams. Channel estimates from the channel estimator 374 may be used to determine the coding and modulation schemes, as well as for spatial processing. The channel estimates may be derived from reference signals transmitted by the UE 350 and / or channel condition feedback. Each spatial stream may then be provided to a different antenna 320 via a separate transmitter 318TX. Each transmitter 318TX may modulate an RF carrier with the corresponding spatial stream for transmission.

[0041] At the UE 350, each receiver 354RX receives signals via its corresponding antenna 352. Each receiver 354RX recovers the information modulated onto the RF carrier and provides the information to the receive (RX) processor 356. The TX processor 368 and the RX processor 356 implement layer 1 functions associated with various signal processing functions. The RX processor 356 may perform spatial processing on the information to recover any spatial streams destined for the UE 350. If multiple spatial streams are destined for the UE 350, they may be combined by the RX processor 356 into a single OFDM symbol stream. The RX processor 356 then uses a fast Fourier transform (FFT) to convert the OFDM symbol stream from the time domain to the frequency domain. The frequency domain signal includes a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols and reference signals on each subcarrier are recovered and demodulated by determining the most likely signal constellation points transmitted by the base station 310. These soft decisions may be based on the channel estimates computed by the channel estimator 358. The soft decisions are then decoded and deinterleaved to recover the data and control signals originally transmitted by the base station 310 on the physical channel. The data and control signals are then provided to the controller / processor 359, which implements layer 3 and layer 2 functions.

[0042] The controller / processor 359 may be associated with a memory 360 that stores program code and data. The memory 360 may be referred to as a computer-readable medium. In the UL, the controller / processor 359 provides demultiplexing between the transport channel and the logical channel, packet reassembly, decryption, header decompression, and control signal processing to recover IP packets from the EPC 160. The controller / processor 359 is also responsible for supporting HARQ operations using error detection with the ACK and / or NACK protocols.

[0043] Similar to the functions described in connection with DL transmissions performed by the base station 310, the controller / processor 359 provides RRC layer functions associated with system information (e.g., MIB, SIB) acquisition, RRC connection, and measurement reporting; PDCP layer functions associated with header compression / decompression and security (encryption, decryption, integrity protection, integrity verification); RLC layer functions associated with the transfer of upper layer PDUs, error correction via ARQ, concatenation, segmentation, and reassembly of RLC SDUs, re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functions associated with the mapping between the logical channel and the transport channel, multiplexing of MAC SDUs onto TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction via HARQ, priority handling, and logical channel prioritization.

[0044] The TX processor 368 may use channel estimates derived by the channel estimator 358 from reference signals or feedback transmitted by the base station 310 to select an appropriate coding and modulation scheme and facilitate spatial processing. The spatial streams generated by the TX processor 368 may be provided to different antennas 352 via separate transmitters 354TX. Each transmitter 354TX may modulate an RF carrier with a corresponding spatial stream for transmission.

[0045] UL transmissions are processed at the base station 310 in a manner similar to that described in connection with the receiver functions at the UE 350. Each receiver 318RX receives signals via its corresponding antenna 320. Each receiver 318RX recovers the information modulated onto the RF carrier and provides the information to the RX processor 370.

[0046] The controller / processor 375 may be associated with a memory 376 that stores program code and data. The memory 376 may be referred to as a computer-readable medium. In the UL, the controller / processor 375 provides demultiplexing between the transport channel and the logical channel, packet reassembly, decryption, header decompression, control signal processing to recover IP packets from the UE 350. The IP packets from the controller / processor 375 may be provided to the EPC 160. The controller / processor 375 is also responsible for supporting HARQ operations using error detection with the ACK and / or NACK protocols.

[0047] At least one of TX processor 368, RX processor 356, and controller / processor 359 may be configured to perform aspects related to Figure 1 198 thereof.

[0048] At least one of TX processor 316, RX processor 370, and controller / processor 375 may be configured to perform aspects related to Figure 1 198 thereof.

[0049] In some aspects, base station 102 / 180 may send beamformed signals to UE 104. In one configuration, for example, when UEs are densely located within a portion of the coverage area, each beamformed signal may serve multiple UEs. In such a case, the array may be divided into multiple subarrays for MU-MIMO. That is, when multiple UEs are arranged close to each other spatially, base station 180 may generate and send beamformed signals to serve multiple UEs arranged close to each other spatially. For Industrial Internet of Things (IoT) (IIoT), the UEs may not require a large bandwidth for the payloads of the UEs on communication link 120. UEs that can be served by the same or similar beams may be grouped together and frequency division multiplexed (FDMed) in order to save spatial dimensions for multiplexing other UEs in different directions. That is, since the communications associated with IIoT typically do not require large payloads, the base station may FDM the communications of a group of UEs (such as multiple UEs arranged close to each other spatially) into the same beamformed signal or nearby beamformed signals in order to reserve the resources of the base station for communicating with other UEs in different directions. In the case of multi-beam scanning, grouping UEs that are spatially close is also attractive because the multi-beam scans can be scanned as a group. The group formation may be updated based on UE and environmental mobility. That is, the base station may receive access to the information collected, and based on an assessment of the communication environment, the base station may update the UE group dynamically or semi-statically. For example, the grouping of UEs may reduce the beam measurement and reporting overhead caused by the base station and the UEs. In cases such as vehicle queuing. The grouping of UEs may also reduce the beam scan signaling overhead.

[0050] The DCI may include cyclic redundancy check (CRC) parity bits. The base station may scramble the DCI including the CRC parity bits with an RNTI. The UE may receive the DCI and descramble the scrambled DCI with the UE's RNTI. The UE may check for the presence of a CRC parity error to determine whether the received DCI is for the UE's payload. Specifically, the UE may calculate the CRC of the payload and compare it with the CRC sent with the payload to determine whether an error has occurred. In the case where the CRC of the DCI descrambled with the UE's RNTI matches the CRC, the UE may determine that the descrambled DCI is directed to the UE, and the UE may schedule a communication channel with the base station according to the indication of the corresponding DCI. DCI format 2_x may be used for a group of UEs, and the RNTI may also be shared by the group of UEs. The shared RNTI may include indications such as transmit power control (TPC)-PUCCH-RNTI (TPC-PUCCH-RNTI) or TPC-PUSCH-RNTI. DCI format 2_x may include a plurality of indication blocks, such as block number 1, block number 2, ……, block number N. The starting bit of each indication block (or block) may be indicated by RRC signaling, and the applicable serving cell may be RRC-configured. That is, when the DCI and RNTI are shared for a group of UEs, the DCI indication blocks indicated by the RRC signaling may be used for each UE in the group of UEs. Therefore, each indication block of the DCI according to DCI format 2_x may include an ID of the DCI for each UE in the group of UEs. For example, when a group of UEs includes four UEs (e.g., UE1, UE2, UE3, and UE4), the format 2_x DCI for the group of UEs may include indication blocks Block 0, Block 1, Block 2, and Block 3, as schematically shown in Table 1 below. As another example, each block may include the IDs of UE1, UE2, UE3, and UE4, respectively, as schematically shown in Table 2 below.

[0051]

[0052] Example of UE-specific format 2_x DCI

[0053]

[0054] Example of UE-group-specific format 2_x DCI

[0055] In one configuration, group common DCI can be used to indicate information for a group of UEs. The group common DCI can include beam indication and PL-RS indication. The indicated ID can be UE-specific or group common. Additionally, the same RNTI or different RNTIs can be used in the group common DCI to indicate different information for a group of UEs. UEs and UE groups can determine which ID points to the channels of the UEs and UE groups via RRC signaling.

[0056] Figure 4 FIG. 400 is a diagram showing two configurations of group common DCI 430 for MU-MIMO communication. In one configuration, base station 402 can communicate with UEs 412, 414, 416, 422, 424, and 426. Base station 402 can evaluate the communication environment and group the UEs to form a first UE group 410 including UEs 412, 414, and 416 and a second UE group 420 including UEs 422, 424, and 426. Base station 402 and the first UE group 410 can communicate via a first beamformed signal 404, and base station 402 and the second UE group 420 can communicate via a second beamformed signal 406. Base station 402 can generate a first group common DCI 432 including a plurality of indication blocks for the first UE group 410 including UEs 412, 414, and 416, and a second group common DCI 434 including a plurality of indication blocks for the second UE group 420 including UEs 422, 424, and 426.

[0057] Figure 5 FIG. 500 is a call diagram showing a configuration process when group common DCI is adopted in MU-MIMO wireless communication between a base station and a UE. Figure 6 FIG. 600 is a set of diagrams showing the indication blocks of group common DCI.

[0058] Referring again to Figure 5 , in a MU-MIMO communication environment, base station 504 can generate group common DCI for a UE group of multiple UEs including UE 502, and these UEs are spatially close to each other. The base station can generate and transmit beamformed signals to serve the UE group including UE 502. Base station 504 can generate group common DCI 506 for the UE group including UE 502 and send group common DCI 508 to the UE group including UE 502. UE 502 can receive the group common DCI from base station 504. In response to the group common DCI received from base station 504, UE 502 can schedule communication with base station 504 based on the received group common DCI 510.

[0059] In one configuration, the group common DCI may include a beam indication for a UE group or a PL-RS indication for a UE group. When the group common DCI includes PL-RS, the PL-RS may include a Synchronization Signal Block (SSB) or a CSI-RS. At 508, UE 502 may receive the group common DCI. When the group common DCI includes PL-RS, which in turn includes an SSB or a CSI-RS identifier, the UE may schedule an uplink connection with base station 504, which may include PUCCH / PUSCH / SRS 512. Alternatively, the group common DCI may have a beam indication, such as a Transmission Configuration Indicator (TCI) which may be referred to as RS. The TCI may include an indication of CSI-RS, SSB, or SRS. That is, the beam indication, which may also be referred to as TCI, may be an RS (Reference Figure 2A ) that includes an indication of CSI-RS, SSB, or SRS. When UE 502 receives the group common DCI indicating the beam indication, UE 502 may schedule an uplink connection with base station 504 that includes PUCCH / PUSCH / SRS 512, or may schedule a downlink connection with base station 504 that includes PDCCH / PDSCH 514.

[0060] Reference Figure 6 , in one configuration, the group common DCI 610 may include IDs, such as RS ID, Bandwidth Part (BWP) ID (BWP ID), and Component Carrier (CC) ID (CC ID). For multiple UEs, the IDs may be the same and signaled on a per-UE group basis, one block for one UE group. That is, the IDs may be configured to be specific to that UE group, and multiple UEs in that UE group may share the same ID. For example, the ID of block 0612 of group common DCI 610 may be specifically configured for the first UE group, the ID of block 1614 of group common DCI 610 may be specifically configured for the second UE group, the ID of block 2616 of group common DCI 610 may be specifically configured for the third UE group, and the ID of block 3618 of group common DCI 610 may be specifically configured for the third UE group. In another example, the IDs may be UE-specific and signaled on a per-UE basis, one block per UE. That is, the IDs may be configured to be specific to each UE in the UE group. For example, the ID of block 0612 of group common DCI 610 may be specifically configured for the first UE, the ID of block 1614 of group common DCI 610 may be specifically configured for the second UE, the ID of block 2616 of group common DCI 610 may be specifically configured for the third UE, and the ID of block 3618 of group common DCI 610 may be specifically configured for the fourth UE.

[0061] The base station 504 and the UE group including the UE 502 may have various configurations of the RNTI for the CRC bits for descrambling the DCI. In one configuration, different RNTIs may be configured to apply different indications to different channels. That is, for various channels, the RNTIs may be configured differently. For example, the RNTI may include TCI-PDCCH-RNTI, TCI-PDSCH-RNTI, TCI-PUCCH-RNTI, and TCI-PUSCH-RNTI for PDCCH, PDSCH, PUCCH, and PUSCH, respectively. In addition, the RNTI may include TCI-DL-RNTI and TCI-UL-RNTI for downlink connection and uplink connection, respectively. That is, the RNTI may be configured to include TCI-PDCCH-RNTI which is the RNTI for beam indication for PDCCH, TCI-PDSCH-RNTI which is the RNTI for beam indication for PDSCH, TCI-PUCCH-RNTI which is the RNTI for beam indication for PUCCH, and TCI-PUSCH-RNTI which is the RNTI for beam indication for PUSCH. The RNTI may be configured to include TCI-DL-RNTI which is the RNTI for beam indication for downlink channels, and TCI-UL-RNTI which is the RNTI for beam indication for uplink channels.

[0062] In addition, the same RNTI may be configured using RRC signals to apply different indications to different channels. That is, for the DCI that uses the same RNTI to descramble the CRC bits of the DCI, RRC signaling may be used to configure different indications for different channels. For example, the RRC may be configured to indicate that blocks i+1 to i+4 of the DCI are TCI indications for PDCCH, PDSCH, PUCCH, and PUSCH, respectively. In another example, the RRC may be configured to indicate that blocks i+1 and i+2 of the DCI are TCI indications for a specific downlink channel and / or uplink channel.

[0063] Reference Figure 6, in one configuration, DCI 620 may include TCI indication for PDCCH, and DCI 620 may be configured using TCI-PDCCH-RNTI. Thus, the RRC configuration of DCI 620 may indicate that each block is allocated for the ID of the corresponding UE or for the corresponding UE group. In an example, for DCI 620 configured using TCI-PDCCH-RNTI, the RRC may be configured UE-specific, and each indication block in the block indicates the ID of the TCI of the PDCCH for each UE. In other words, block 0622 may include the TCI ID of the PDCCH of the first UE, block 1624 may include the TCI ID of the PDCCH of the second UE, block 2626 may include the TCI ID of the PDCCH of the third UE, and block 3628 may include the TCI ID of the PDCCH of the fourth UE. In another example, the RRC may be configured UE-group-specific, and each indication block in the block indicates the TCI ID of the PDCCH of each UE group. In other words, block 0622 may include the TCI ID of the PDCCH of the first UE group, block 1624 may include the TCI ID of the PDCCH of the second UE group, block 2626 may include the TCI ID of the PDCCH of the third UE group, and block 3628 may include the TCI ID of the PDCCH of the fourth UE group.

[0064] In one configuration, DCI 630 may include TCI indication for PUCCH, and thus, DCI 630 may be configured using TCI-PUCCH-RNTI. Thus, the RRC configuration of DCI 630 may indicate that each block indicates the ID of each UE or the ID of each UE group. In an example, for DCI 630 configured using TCI-PUCCH-RNTI, the RRC may be configured UE-specific, and each indication block indicates the TCI ID of the PUCCH of each UE. In other words, block 0632 may include the TCI ID of the PUCCH of the first UE, block 1634 may include the TCI ID of the PUCCH of the second UE, block 2636 may include the TCI ID of the PUCCH of the third UE, and block 3638 may include the TCI ID of the PUCCH of the fourth UE. In another example, the RRC may be configured UE-group-specific, and each indication block indicates the TCI ID of the PUCCH of each UE group. In other words, block 0632 may include the TCI ID of the PUCCH of the first UE group, block 1634 may include the TCI ID of the PUCCH of the second UE group, block 2636 may include the TCI ID of the PUCCH of the third UE group, and block 3638 may include the TCI ID of the PUCCH of the fourth UE group.

[0065] In one configuration, DCI 640 may include a TCI indication for downlink communication. Thus, DCI 640 can be configured using TCI-DL-RNTI. Accordingly, the RRC configuration of DCI 640 may indicate that each block in the allocated blocks indicates the ID of a different downlink channel. For example, when DCI 640 is configured using TCI-DL-RNTI, the RRC may be configured to be UE-specific and indicate that each block in the block indicates the TCI ID of a downlink channel. In other words, block 0642 may include the TCI ID of the PDCCH, and block 1644 may include the TCI ID of the PDSCH.

[0066] In one configuration, DCI 650 may include a TCI indication for uplink communication. Thus, DCI 650 can be configured using TCI-UL-RNTI. Accordingly, the RRC configuration of DCI 650 may indicate that each block in the allocated blocks indicates the ID of each different uplink channel. For example, for DCI 650 configured using TCI-UL-RNTI, the RRC may be configured to be UE-specific, and each block in the allocated indication blocks indicates the TCI ID of a downlink channel. In other words, block 0652 may include the TCI ID of the PUCCH, and block 1654 may include the TCI ID of the PUSCH.

[0067] Figure 7 FIG. 700 is a flowchart of a method of wireless communication employing group common DCI. The method may be performed by a UE (e.g., UE 104 / 502, which may include a memory 360 and which may be the entire UE 104 / 502 or a component of UE 104 / 502, such as TX processor 368, RX processor 356, and / or controller / processor 359). At 702, the UE may be configured to receive group common DCI from a base station. The group common DCI may be configured by the base station for a set of UEs, and the set of UEs may include the UE. The group common DCI may include a beam indication and / or a PL-RS indication. At 704, in response to receiving the group common DCI, the UE may be configured to communicate with the base station based on the group common DCI.

[0068] Figure 8FIG. 800 is a flow chart of a method for wireless communication using group common DCI. The method may be performed by a base station (e.g., base station 102 / 180 / 504, which may include a memory 376 and may be the entire base station 102 / 180 / 504 or a component of base station 102 / 180 / 504, such as TX processor 316, RX processor 370, and / or controller / processor 375). The base station 102 / 180 / 504 may group UEs based on spatial proximity and determine the number of groups. At 802, the base station 102 / 180 / 504 may be configured to generate group common DCI for a UE group that includes a set of UEs. The base station 102 / 180 / 504 may allocate a block of group common DCI to a corresponding UE or UE group, assign an ID to each UE or UE group, and insert the ID into the allocated block of group common DCI. The group common DCI may include a beam indication and / or a PL-RS indication. At 804, the base station may be configured to send the group common DCI to the UE group that includes the set of UEs. At 806, the base station is configured to communicate with each UE in the UE group based on the group common DCI.

[0069] Referring again to Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 , as described above, in a MU-MIMO communication environment, group common DCI may be used to indicate information for a UE group. Signals using the same or similar beamforming for grouped UEs may reduce beam measurement and reporting overhead, and may also reduce beam scanning signal overhead. The base station 102 / 180 / 504 may be configured to generate and send group common DCI for a UE group that includes a plurality of UEs arranged close to each other in space. The UE 104 / 502 may receive the group common DCI and schedule communication with the base station 102 / 180 / 504 based on the received group common DCI. The group common DCI may include a beam indication and / or a PL-RS indication. The indicated identifier may be UE-specific or group-common. Additionally, the same or different RNTIs may be used in the group common DCI to indicate different information for the UE group. Specifically, the group common DCI may include a PL-RS indication for sending PUCCH, PUSCH, and / or SRS, and the PL-RS may include SSB and / or CSI-RS. The beam indication or TCI may be used for receiving PDCCH and / or PDSCH, and may also be used for sending PUCCH, PUSCH, and / or SRS. The group common DCI includes an ID, and the ID may be group-specific or UE-specific. Beam indications for different channels or channel sets are indicated by different RNTIs and RRC configurations.

[0070] Further disclosures are included in the appendix.

[0071] It should be understood that the specific order or hierarchy of blocks in the disclosed process / flowchart is illustrative of example methods. Based on design preferences, it should be understood that the specific order or hierarchy of blocks in the process / flowchart can be rearranged. Additionally, some blocks may be combined or omitted. The appended method claims present the elements of the various blocks in an example order and are not meant to be limited to the specific order or hierarchy presented.

[0072] The foregoing description is provided to enable a person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. Thus, the claims are not intended to be limited to the aspects shown herein but are to be accorded the full scope consistent with the language of the claims, where the elements in the singular form are not intended to mean "one and only one" but rather "one or more" unless specifically stated otherwise. The term "exemplary" as used herein means "serving as an example, instance, or illustration". Any aspect described herein as "exemplary" is not necessarily to be construed as more preferred or advantageous than other aspects. Unless specifically stated otherwise, the term "some" means one or more. Combinations such as "at least one of A, B, or C", "one or more of A, B, or C", "at least one of A, B, and C", "one or more of A, B, and C", and "any combination of A, B, C, or combinations thereof" include any combination of A, B, and / or C and may include multiples of A, multiples of B, or multiples of C. Specifically, such combinations as "at least one of A, B, or C", "one or more of A, B, or C", "at least one of A, B, and C", "one or more of A, B, and C", and "any combination of A, B, C, or combinations thereof" can be A only, B only, C only, A and B, A and C, B and C, or A and B and C, where any such combination can include one or more members of A, B, or C. All structural and functional equivalents of the elements of the various aspects described herein that are known or later come to be known to those of ordinary skill in the art are expressly incorporated herein by reference and are intended to be encompassed by the claims. Furthermore, nothing disclosed herein is intended to be dedicated to the public regardless of whether such disclosure is explicitly recited in the claims. The words "module", "mechanism", "element", "device", etc. shall not replace the word "component". Thus, no claim element is to be construed as a means-plus-function unless the element is expressly recited using the phrase "means for...".

Claims

1. A method for wireless communication of a user equipment (UE), comprising: Receiving group common downlink control information (DCI) from a base station, the group common DCI being for a set of UEs, the set of UEs including the UE, the group common DCI including at least one of a beam indication or a path loss reference signal (PL-RS) indication, wherein a radio network temporary identifier (RNTI) is used in the group common DCI to indicate different information of the set of UEs; and Communicating with the base station based on the group common DCI, Wherein, the beam indication for each different channel or for a set of channels is indicated by a different RNTI, and wherein the beam indication for each different channel or the set of channels is further indicated by radio resource control (RRC) configuration, and an indication block of the group common DCI is for different channel types.

2. The method according to claim 1, wherein, The group common DCI includes the PL-RS indication for transmitting at least one of a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), or a sounding reference signal (SRS).

3. The method according to claim 2, wherein The PL-RS includes one of a synchronization signal block (SSB) or a channel state information (CSI) reference signal (RS) (CSI-RS).

4. The method according to claim 1, wherein The group common DCI includes the beam indication for receiving at least one of a physical downlink control channel (PDCCH) or a physical downlink shared channel (PDSCH), or for transmitting at least one of a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), or a sounding reference signal (SRS).

5. The method according to claim 4, wherein The beam indication includes a transmission configuration indicator (TCI).

6. The method according to claim 1, wherein, The group common DCI includes at least one identifier (ID), wherein the at least one ID is group-specific or UE-specific.

7. The method according to claim 6, wherein, When the at least one ID is group-specific, at least one of the beam indication or the PL-RS is indicated in the group common DCI for a group of UEs corresponding to the at least one ID.

8. The method according to claim 6, wherein When the at least one ID is UE-specific, at least one of the beam indication or the PL-RS is indicated in the group common DCI for each UE in the set of UEs corresponding to the at least one ID.

9. A device for wireless communication, the device being a user equipment (UE), comprising: A memory; And At least one processor, coupled to the memory and configured to: Receive group common downlink control information (DCI) from a base station, the group common DCI being for a set of UEs, the set of UEs including the UE, the group common DCI including at least one of a beam indication or a path loss reference signal (PL-RS) indication, wherein a radio network temporary identifier (RNTI) is used in the group common DCI to indicate different information of the set of UEs; and Communicate with the base station based on the group common DCI, Wherein, the beam indication for each different channel or for a channel set is indicated by a different RNTI, and wherein the beam indication for each different channel or the channel set is further indicated by radio resource control (RRC) configuration, and the indication block of the group common DCI is for different channel types.

10. The apparatus according to claim 9, wherein, The group common DCI includes the PL-RS indication for transmitting at least one of a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), or a sounding reference signal (SRS).

11. The device according to claim 10, wherein, The PL-RS includes one of a synchronization signal block (SSB) or a channel state information (CSI) reference signal (RS) (CSI-RS).

12. The apparatus according to claim 9, wherein, The group common DCI includes the beam indication for receiving at least one of a physical downlink control channel (PDCCH) or a physical downlink shared channel (PDSCH), or for transmitting at least one of a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), or a sounding reference signal (SRS).

13. The apparatus according to claim 12, wherein, The beam indication includes a transmission configuration indicator (TCI).

14. The apparatus according to claim 9, wherein, The group common DCI includes at least one identifier (ID), wherein the at least one ID is group-specific or UE-specific.

15. The device according to claim 14, wherein, When the at least one ID is group-specific, at least one of the beam indication or the PL-RS is indicated in the group common DCI for a group of UEs corresponding to the at least one ID.

16. The device according to claim 14, wherein, When the at least one ID is UE-specific, at least one of the beam indication or the PL-RS is indicated in the group common DCI for each UE in a set of UEs corresponding to the at least one ID.

17. An apparatus for wireless communication, the apparatus being a user equipment (UE), comprising: means for receiving group common downlink control information (DCI) from a base station, the group common DCI being for a set of UEs including the UE, the group common DCI including at least one of a beam indication or a path loss reference signal (PL-RS) indication, wherein different information of the set of UEs is indicated using a radio network temporary identifier (RNTI) in the group common DCI; and means for communicating with the base station based on the group common DCI, Wherein, the beam indication for each different channel or for a channel set is indicated by a different RNTI, and wherein the beam indication for each different channel or the channel set is further indicated by radio resource control (RRC) configuration, and the indication block of the group common DCI is for different channel types.

18. The apparatus according to claim 17, wherein, The group common DCI includes the PL-RS indication for transmitting at least one of a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), or a sounding reference signal (SRS).

19. The device according to claim 18, wherein, The PL-RS includes one of a synchronization signal block (SSB) or a channel state information (CSI) reference signal (RS) (CSI-RS).

20. The apparatus according to claim 17, wherein, The group common DCI includes the beam indication for receiving at least one of a physical downlink control channel (PDCCH) or a physical downlink shared channel (PDSCH), or for transmitting at least one of a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), or a sounding reference signal (SRS).

21. The apparatus according to claim 20, wherein, The beam indication includes a transmission configuration indicator (TCI).

22. The apparatus according to claim 17, wherein The group common DCI includes at least one identifier (ID), where the at least one ID is group-specific or UE-specific.

23. The device according to claim 22, wherein When the at least one ID is group-specific, at least one of the beam indication or the PL-RS is indicated in the group common DCI for a group of UEs corresponding to the at least one ID.

24. The apparatus according to claim 22, wherein, When the at least one ID is UE-specific, at least one of the beam indication or the PL-RS is indicated in the group common DCI for each UE in the UE set corresponding to the at least one ID.

25. A computer-readable medium storing computer-executable code that, when executed by a processor of a user equipment (UE), causes the processor to: Receive group common downlink control information (DCI) from a base station, the group common DCI for a UE set including the UE, the group common DCI including at least one of a beam indication or a path loss reference signal (PL-RS) indication, where different information of the UE set is indicated using a radio network temporary identifier (RNTI) in the group common DCI; and Communicate with the base station based on the group common DCI, Among them, The beam indication for each different channel or for a channel set is indicated by a different RNTI, and where the beam indication for each different channel or the channel set is further indicated by radio resource control (RRC) configuration, and the indication blocks of the group common DCI are respectively for different channel types.

26. A method for wireless communication of a base station, comprising: Generating group common downlink control information (DCI) for a group of user equipment (UEs), the group of UEs including a UE set, the group common DCI including at least one of a beam indication or a path loss reference signal (PL-RS) indication, where different information of the UE set is indicated using a radio network temporary identifier (RNTI) in the group common DCI; Transmitting the group common DCI to the group of UEs including the UE set; And Communicating with each UE in the group of UEs based on the group common DCI, Wherein, the beam indication for each different channel or for a channel set is indicated by a different RNTI, and wherein the beam indication for each different channel or the channel set is further indicated by radio resource control (RRC) configuration, and the indication blocks of the group common DCI are respectively for different channel types.

27. The method according to claim 26, wherein, The group common DCI includes the PL-RS indication for receiving at least one of a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), or a sounding reference signal (SRS).

28. The method according to claim 27, wherein, The PL-RS includes one of a synchronization signal block (SSB) or a channel state information (CSI) reference signal (RS) (CSI-RS).

29. The method according to claim 26, wherein, The group common DCI includes the beam indication for transmitting at least one of a physical downlink control channel (PDCCH) or a physical downlink shared channel (PDSCH), or for receiving at least one of a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), or a sounding reference signal (SRS).

30. The method according to claim 29, wherein, The beam indication includes a transmission configuration indicator (TCI).

31. The method according to claim 26, wherein The group common DCI includes at least one identifier (ID), wherein the at least one ID is one of UE group-specific or UE-specific.

32. The method according to claim 31, wherein When the at least one ID is group-specific, at least one of the beam indication or the PL-RS is indicated in the group common DCI for the UE group corresponding to the at least one ID.

33. The method according to claim 31, wherein, When the at least one ID is UE-specific, at least one of the beam indication or the PL-RS is indicated in the group common DCI for each UE in the UE set corresponding to the at least one ID.

34. An apparatus for wireless communication, the apparatus being a base station, comprising: a memory; and at least one processor, coupled to the memory and configured to: generate group common downlink control information (DCI) for a user equipment (UE) group, the UE group including a UE set, the group common DCI including at least one of a beam indication or a path loss reference signal (PL-RS) indication, wherein different information of the UE set is indicated by a radio network temporary identifier (RNTI) in the group common DCI; send the group common DCI to the UE group including the UE set; and communicate with each UE in the UE group based on the group common DCI, Wherein, the beam indication for each different channel or for a channel set is indicated by a different RNTI, and wherein the beam indication for each different channel or the channel set is further indicated by radio resource control (RRC) configuration, and the indication blocks of the group common DCI are respectively for different channel types.

35. The device according to claim 34, wherein The group common DCI includes the PL-RS indication for receiving at least one of a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), or a sounding reference signal (SRS).

36. The device according to claim 35, wherein, The PL-RS includes one of a synchronization signal block (SSB) or a channel state information (CSI) reference signal (RS) (CSI-RS).

37. The apparatus according to claim 34, wherein, The group common DCI includes the beam indication for transmitting at least one of a physical downlink control channel (PDCCH) or a physical downlink shared channel (PDSCH), or for receiving at least one of a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), or a sounding reference signal (SRS).

38. The apparatus according to claim 37, wherein, The beam indication includes a transmission configuration indicator (TCI).

39. The apparatus according to claim 34, wherein, The group common DCI includes at least one identifier (ID), wherein the at least one ID is group-specific or UE-specific.

40. The apparatus according to claim 39, wherein, When the at least one ID is group-specific, at least one of the beam indication or the PL-RS is indicated in the group common DCI for a group of UEs, and the UE group corresponds to the at least one ID.

41. The apparatus according to claim 39, wherein, When the at least one ID is UE-specific, at least one of the beam indication or the PL-RS is indicated in the group common DCI for each UE in the UE set, and the UE set corresponds to the at least one ID.

42. An apparatus for wireless communication, the apparatus being a base station, comprising: means for generating group common downlink control information (DCI) for a group of user equipment (UEs), the UE group including a UE set, the group common DCI including at least one of a beam indication or a path loss reference signal (PL-RS) indication, wherein different information of the UE set is indicated using a radio network temporary identifier (RNTI) in the group common DCI; means for transmitting the group common DCI to the UE group including the UE set; and means for communicating with each UE in the UE group based on the group common DCI, wherein the beam indication for each different channel or for a channel set is indicated by a different RNTI, and wherein the beam indication for each different channel or the channel set is further indicated by radio resource control (RRC) configuration, and the indication blocks of the group common DCI are respectively for different channel types.

43. The apparatus according to claim 42, wherein, The group common DCI includes the PL-RS indication for receiving at least one of a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), or a sounding reference signal (SRS).

44. The apparatus according to claim 43, wherein, The PL-RS includes one of a synchronization signal block (SSB) or a channel state information (CSI) reference signal (RS) (CSI-RS).

45. The apparatus according to claim 42, wherein The group common DCI includes the beam indication for transmitting at least one of a physical downlink control channel (PDCCH) or a physical downlink shared channel (PDSCH), or receiving at least one of a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), or a sounding reference signal (SRS).

46. The apparatus according to claim 45, wherein, The beam indication includes a transmission configuration indicator (TCI).

47. The apparatus according to claim 42, wherein, The group common DCI includes at least one identifier (ID), where the at least one ID is group-specific or UE-specific.

48. The apparatus according to claim 47, wherein, When the at least one ID is group-specific, at least one of the beam indication or the PL-RS is indicated in the group common DCI for a group of UEs, and the UE group corresponds to the at least one ID.

49. The apparatus according to claim 47, wherein When the at least one ID is UE-specific, at least one of the beam indication or the PL-RS is indicated in the group common DCI for each UE in the UE set, and the UE set corresponds to the at least one ID.

50. A computer-readable medium storing computer-executable code that, when executed by a processor of a base station, causes the processor to: Generate group common downlink control information (DCI) for a user equipment (UE) group, the UE group including a UE set, the group common DCI including at least one of a beam indication or a path loss reference signal (PL-RS) indication, where different information of the UE set is indicated using a radio network temporary identifier (RNTI) in the group common DCI; Transmit the group common DCI to the UE group including the UE set; and Communicate with each UE in the UE group based on the group common DCI, Among them, The beam indication for each different channel or for a channel set is indicated by a different RNTI, and where the beam indication for each different channel or the channel set is further indicated by a radio resource control (RRC) configuration, and the indication blocks of the group common DCI are respectively for different channel types.

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