Orbital angular momentum data channel configuration

Abstract

Aspects of the present disclosure relate to a user equipment (UE) that receives, from a base station, signaling indicating an orthogonal angular momentum (OAM) multiplexing configuration of one or more configured OAM modes. The UE may apply at least one of the configured OAM modes to receive a downlink transmission and / or to transmit an uplink transmission. The base station transmits an OAM multiplexing configuration of one or more configured OAM modes to be applied at the UE, and then the base station may receive, from the UE, an uplink transmission to which at least one of the configured OAM modes is applied.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to U.S. Provisional Application Serial No. 63 / 341,596, filed on May 13, 2022, entitled “Orbital Angular Momentum Data Channels Configuration,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to wireless communications and, more particularly, to orbital angular momentum (OAM). Background Art

[0004] A wireless communication system may include one or more network communication devices (such as a base station), which may be referred to as an eNodeB (eNB), a next generation NodeB (gNB), a core network function (CNF), or other suitable terms. Each network communication device (such as a base station) may support wireless communication of one or more user communication devices, which may also be referred to as a user equipment (UE) or other suitable terms. A wireless communication system may utilize resources of a wireless communication system to support wireless communication with one or more user communication devices, such as time resources (e.g., symbols, time slots, sub-time slots, mini-time slots, aggregated time slots, subframes, frames, etc.) or frequency resources (e.g., subcarriers, carriers). In addition, a wireless communication system may support wireless communication across various radio access technologies (RATs), including third generation (3G) RATs, fourth generation (4G) RATs, fifth generation (5G) RATs, and other suitable RATs other than 5G. In some cases, a wireless communication system may be a non-terrestrial network (NTN), which may support various communication devices for wireless communication in an NTN. For example, the NTN may include network entities on non-ground vehicles (such as satellites, unmanned aerial vehicles (UAVs), and high altitude platform systems (HAPS)), as well as network entities on the ground (such as gateway entities capable of long-distance transmission and reception).

[0005] In wireless communications, different resource domains can be used to send and receive wireless signals. For example, UEs and network devices can utilize resources in the time domain and the frequency domain for wireless transmission and reception. The demand for higher transmission rates for wireless communications continues to increase, such as to meet future requirements of 6G systems that utilize modulation and multiplexing techniques. Summary of the invention

[0006] The present disclosure relates to methods, apparatus, and systems for supporting OAM data channel configuration. By utilizing the described techniques, communication devices in a wireless communication system can utilize OAM for wireless transmission and reception. Various aspects of the present disclosure relate to how to map data channels to one or more configured OAM modes, including: using spatial multiplexing and applying spatial diversity techniques. The described signaling process includes: techniques for associating downlink (DL) and uplink (UL) data channels multiplexed with OAM modes with corresponding configuration indications provided to UEs. In addition, these techniques include: configuration of diversity or spatial multiplexing schemes coupled with OAM modes, mapping and indication of transmission configuration indicator (TCI) states and / or QCL assumptions of OAM modes for data transmission and reception, and configuration for applying OAM multiple-input multiple-output (MIMO) multiplexing, where multiple antenna arrays generate OAM modes in parallel.

[0007] Some implementations of the methods and apparatus described herein may include wireless communication at a device (e.g., a UE), and the device receiving signaling from a base station indicating an OAM multiplexing configuration of one or more configured OAM modes. The device may apply at least one of the configured OAM modes to receiving downlink transmissions and / or sending uplink transmissions.

[0008] In some implementations of the methods and apparatus described herein, the device may map a configured OAM mode to at least one TCI for receiving downlink transmissions and / or sending uplink transmissions. The device may apply a first configured OAM mode to receiving downlink transmissions and a second configured OAM mode to sending uplink transmissions. The number of one or more configured OAM modes is indicated by downlink control information (DCI) signaling and / or radio resource control (RRC) signaling. The OAM multiplexing configuration includes: the number of channel layers mapped to the number of codewords for spatial multiplexing, and the number of channel layers per codeword is at least equal to the number of one or more configured OAM modes. The number of channel layers indicates: the number of one or more configured OAM modes for receiving downlink transmissions. The number of channel layers indicates: the number of one or more configured OAM modes for sending uplink transmissions. The signaling indicating the OAM multiplexing configuration includes a mapping matrix that maps the number of channel layers to one or more configured OAM modes associated with utilizing spatial multiplexing. The index associated with the mapping matrix is ​​indicated by DCI signaling, medium access control element (MAC CE) signaling, and / or RRC signaling.The signaling indicating the OAM multiplexing configuration includes a mapping matrix that maps the number of channel layers to one or more configured OAM modes associated with utilizing a diversity scheme.

[0009] The index associated with the mapping matrix is ​​indicated by DCI signaling, MAC CE signaling, and / or RRC signaling. The number of TCI states corresponds to the number of one or more configured OAM modes. The number of one or more configured OAM modes corresponds to one TCI state. The signaling indicating the OAM multiplexing configuration includes: the number of one or more configured OAM modes associated with the corresponding TCI state, and the corresponding TCI state corresponds to the antenna array set. The number of TCI states indicates the number of antenna arrays in the antenna array set used for the same configured OAM mode index generation. The signaling indicating the OAM multiplexing configuration indicates the OAM mode index set applicable to the TCI state. The signaling indicating the OAM multiplexing configuration indicates different OAM mode index sets applicable to the TCI state. The signaling indicating the OAM multiplexing configuration includes: a set of one or more configured OAM modes, a TCI state set, and an indication of a rank two transmission for receiving downlink transmission and / or sending uplink transmission. The signaling indicating the OAM multiplexing configuration includes: an association of a demodulation reference signal (DM-RS) port with one or more configured OAM modes.

[0010] Some implementations of the methods and apparatus described herein may include wireless communications at a device (e.g., a base station gNB), and the device sends signaling to a UE indicating an OAM multiplexing configuration of one or more configured OAM modes to be applied at the UE for receiving downlink transmissions and / or sending uplink transmissions. The device may receive from the UE an uplink transmission to which at least one of the one or more configured OAM modes is applied.

[0011] In some implementations of the methods and apparatus described herein, signaling is sent to a UE to map a configured OAM mode with a TCI for receiving downlink transmissions and / or sending uplink transmissions. The number of one or more configured OAM modes is indicated by DCI signaling and / or RRC signaling. The OAM multiplexing configuration includes: the number of channel layers mapped to the number of codewords for spatial multiplexing, and the number of channel layers for each codeword is at least equal to the number of one or more configured OAM modes. The number of channel layers indicates: the number of one or more configured OAM modes for the UE to receive downlink transmissions. The number of channel layers indicates: the number of one or more configured OAM modes for the UE to send uplink transmissions. The signaling indicating the OAM multiplexing configuration includes a mapping matrix that maps the number of channel layers to one or more configured OAM modes associated with utilizing spatial multiplexing. The index associated with the mapping matrix is ​​indicated by DCI signaling, MAC CE signaling, and / or RRC signaling. The signaling indicating the OAM multiplexing configuration includes a mapping matrix that maps the number of channel layers to one or more configured OAM modes associated with utilizing a diversity scheme.

[0012] The index associated with the mapping matrix is ​​indicated by DCI signaling, MAC CE signaling or RRC signaling. The number of TCI states corresponds to the number of one or more configured OAM modes. The number of one or more configured OAM modes corresponds to one TCI state. The signaling indicating the OAM multiplexing configuration includes: the number of one or more configured OAM modes associated with the corresponding TCI state, and the corresponding TCI state corresponds to the antenna array set. The number of TCI states indicates the number of antenna arrays in the antenna array set used for the same configured OAM mode index generation. The signaling indicating the OAM multiplexing configuration indicates the OAM mode index set applicable to the TCI state. The signaling indicating the OAM multiplexing configuration indicates different OAM mode index sets applicable to the TCI state. The signaling indicating the OAM multiplexing configuration includes: a set of one or more configured OAM modes, a set of TCI states, and an indication of rank two transmission for the UE to receive downlink transmissions and / or the UE to send uplink transmissions. The signaling indicating the OAM multiplexing configuration includes: an association of a DM-RS port with one or more configured OAM modes. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Various aspects of the present disclosure for OAM data channel configuration are described with reference to the following drawings.The same numbers may be used throughout to reference similar features and components shown in the drawings.

[0014] Figure 1 An example of a wireless communication system supporting OAM data channel configuration according to aspects of the present disclosure is illustrated.

[0015] Figure 2 Examples of OAM patterns of OAM waves associated with OAM data channel configurations according to aspects of the present disclosure are illustrated.

[0016] Figure 3 An example of antenna phase and OAM pattern generation associated with OAM data channel configuration according to aspects of the present disclosure is illustrated.

[0017] Figure 4 An example of multiple OAM mode generation implemented with multiple uniform circular arrays in relation to OAM data channel configuration according to aspects of the present disclosure is illustrated.

[0018] Figure 5 An example of flow generation corresponding to an OAM mode of a UCA array supporting an OAM data channel configuration according to aspects of the present disclosure is illustrated.

[0019] Figure 6 An example block diagram of components of a device (eg, UE) supporting OAM data channel configuration according to aspects of the present disclosure is illustrated.

[0020] Figure 7 An example block diagram of components of a device (eg, a base station) supporting OAM data channel configuration according to aspects of the present disclosure is illustrated.

[0021] Figure 8-Figure 10 A flow chart of a method of supporting OAM data channel configuration according to aspects of the present disclosure is illustrated. DETAILED DESCRIPTION

[0022] Implementations of OAM data channel configurations are described, such as those associated with communication devices in wireless communication systems. The described techniques enable OAM modes that can be used for wireless communications, which can increase the number of available communication channels in wireless communication systems. The demand for higher transmission rates for wireless communications continues to increase, such as to meet the requirements of 6G systems that utilize modulation and multiplexing techniques, including techniques that utilize OAM. The described OAM multiplexing techniques exploit the physical properties of electromagnetic waves, characterized by spiral phase fronts in the direction of propagation. In OAM, different orthogonal modes (spiral phase fronts) can be generated in the angular domain while utilizing the same frequency and time resources, thereby providing an additional dimension to multiplex data.

[0023] Based on the transmit and receive antenna characteristics of the UE, the UE can use the same time, frequency, space, power, and / or code resources to receive multiple data streams corresponding to multiple OAM modes, where each OAM mode can have different channel fading effects depending on the environment. In addition, multiple uniform circular arrays can be used in parallel to improve the gain of OAM and MIMO. For data channels multiplexed with OAM, the technology includes a new mapping of data channels and related reference signals in the transmission chain, and the relationship with the spatial beam, and this information can be indicated to the UE. In the present disclosure, a technology for mapping data channels to OAM modes, as well as the correlation with spatial streams and corresponding configuration methods are described.

[0024] Various aspects of the present disclosure relate to how to map data channels to one or more configured OAM modes, including using spatial multiplexing and applying spatial diversity techniques. The described signaling process includes techniques for associating data channels (DL and UL) multiplexed with OAM modes with corresponding configuration indications provided to the UE. In addition, these techniques include: configuration of diversity or spatial multiplexing schemes coupled with OAM modes, mapping and indication of TCI states and / or QCL assumptions for data transmission and reception with OAM modes, and configuration for applying OAM-MIMO multiplexing, where multiple antenna arrays generate OAM modes in parallel.

[0025] Aspects of the present disclosure are described in the context of a wireless communication system.Aspects of the present disclosure are further illustrated and described with reference to device diagrams and flow diagrams related to OAM data channel configuration.

[0026] Figure 1 An example of a wireless communication system 100 supporting OAM data channel configuration according to various aspects of the present disclosure is illustrated. The wireless communication system 100 may include one or more base stations 102, one or more UEs 104, and a core network 106. The wireless communication system 100 may support various radio access technologies. In some implementations, the wireless communication system 100 may be a 4G network, such as an LTE network or an advanced LTE (LTE-A) network. In some other implementations, the wireless communication system 100 may be a 5G network, such as an NR network. In other implementations, the wireless communication system 100 may be a combination of a 4G network and a 5G network. The wireless communication system 100 may support radio access technologies other than 5G. In addition, the wireless communication system 100 may support technologies such as time division multiple access (TDMA), frequency division multiple access (FDMA), or code division multiple access (CDMA).

[0027] One or more base stations 102 may be dispersed throughout a geographic area to form a wireless communication system 100. One or more of the base stations 102 described herein may be or include or may be referred to as a base transceiver station, an access point, a NodeB, an eNodeB (eNB), a next generation NodeB (gNB), a radio head (RH), a relay node, an integrated access and backhaul (IAB) node, or other suitable terms. The base station 102 and the UE 104 may communicate via a communication link 108, which may be a wireless or wired connection. For example, the base station 102 and the UE 104 may perform wireless communication via an NR-Uu interface.

[0028] A base station 102 may provide a geographic coverage area 110, and the base station 102 may support services (e.g., voice, video, packet data, messaging, broadcast, etc.) for one or more UEs 104 within the geographic coverage area. For example, the base station 102 and the UE 104 may support wireless communications of signals associated with services (e.g., voice, video, packet data, messaging, broadcast, etc.) in accordance with one or more radio access technologies. In some implementations, the base station 102 may be mobile, such as when implemented as a gNB on a satellite or other non-terrestrial station (NTS) associated with a non-terrestrial network (NTN). In some implementations, different geographic coverage areas 110 associated with the same or different radio access technologies may overlap, and different geographic coverage areas 110 may be associated with different base stations 102. The information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0029] One or more UEs 104 may be dispersed throughout a geographic area or coverage area 110 of the wireless communication system 100. UE 104 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, a customer premises equipment (CPE), a subscriber device, or some other suitable term. In some implementations, UE 104 may be referred to as a unit, a station, a terminal, or a client, etc. Additionally or alternatively, UE 104 may be referred to as an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communication (MTC) device, etc. In some implementations, UE 104 may be stationary in the wireless communication system 100. In other implementations, UE 104 may be mobile in the wireless communication system 100, such as an earth station in motion (ESIM).

[0030] One or more UEs 104 may be devices of different forms or with different capabilities. Figure 1 Some examples of UE 104 are illustrated in FIG. Figure 1 As shown, UE 104 can communicate with various types of devices, such as base stations 102, other UEs 104, or network devices (e.g., core network 106, relay devices, gateway devices, integrated access and backhaul (IAB) nodes, location servers implementing location management functions (LMF), or other network devices). Additionally or alternatively, UE 104 can support communication with other base stations 102 or UEs 104 (which can act as relays in the wireless communication system 100).

[0031] The UE 104 may also support wireless communications directly with other UEs 104 via a communication link 112. For example, the UE 104 may support wireless communications directly with another UE 104 via a device-to-device (D2D) communication link. In some implementations, such as vehicle-to-vehicle (V2V) deployments, vehicle-to-everything (V2X) deployments, or cellular V2X deployments, the communication link 112 may be referred to as a sidelink. For example, the UE 104 may support wireless communications directly with another UE 104 via a PC5 interface.

[0032] The base station 102 may support communication with the core network 106, or with another base station 102, or both. For example, the base station 102 may interface with the core network 106 via one or more backhaul links 114 (e.g., via S1, N2, or other network interfaces). The base stations 102 may communicate with each other via backhaul links 118 (e.g., via X2, Xn, or another network interface). In some implementations, the base stations 102 may communicate directly with each other (e.g., between the base stations 102). In some other implementations, the base stations 102 may communicate with each other indirectly (e.g., via the core network 106). In some implementations, one or more base stations 102 may include subcomponents, such as an access network entity, which may be an example of an access node controller (ANC). The ANC may communicate with one or more UEs 104 via one or more other access network transmission entities, which may be referred to as remote radio heads, smart radio heads, gateways, transmission reception points (TRPs), and other network nodes and / or entities.

[0033] The core network 106 may support user authentication, access authorization, tracking, connection, and other access, routing, or mobility functions. The core network 106 may be an evolved packet core (EPC) or a 5G core (5GC), which may include control plane entities that manage access and mobility (e.g., mobility management entity (MME), access and mobility management function (AMF)), and user plane entities that route packets or interconnections to external networks (e.g., serving gateway (S-GW), packet data network (PDN) gateway (P-GW), or user plane function (UPF)). In some implementations, the control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management of one or more UEs 104 served by one or more base stations 102 associated with the core network 106.

[0034] Depending on the implementation, one or more of the UE 104 and the base station 102 may be operable to implement various aspects of the OAM data channel configuration, as described herein. For example, the base station 102 may transmit an OAM multiplexing configuration 116, which includes: the UE 104 is in one or more configured OAM modes to be applied to receive downlink transmissions and / or send uplink transmissions. The UE 104 receives the OAM multiplexing configuration 116 of the one or more configured OAM modes, and may apply the configured OAM mode to wireless communications with a network device at 118, such as for receiving (multiple) downlink transmissions and / or for sending (multiple) uplink transmissions. The base station 102 may also receive an uplink transmission 120 from the UE 104 to which the configured OAM mode is applied.

[0035] In terms of OAM data channel configuration, with reference to the physical downlink shared channel (PDSCH) and layer mapping, the UE shall assume that the complex-valued modulation symbol of each codeword in the codeword to be transmitted is mapped to one or several layers according to the following table 7.3.1.3-1 for codeword-to-layer mapping for spatial multiplexing. should be mapped to layer x(i)=[x (0) (i)…x (v-1) (i)] T superior, where υ is the number of layers, and is the number of modulation symbols per layer.

[0036] Table 7.3.1.3-1: Codeword to layer mapping for spatial multiplexing:

[0037]

[0038]

[0039]

[0040] Regarding antenna port mapping, the vector [x (0) (i)…x (v-1) (i)] T piece Should be mapped to antenna ports according to the following formula:

[0041]

[0042] in And the antenna ports {p0, ..., p v-1}The set is determined according to the procedure [4, TS 38.212].

[0043] Regarding mapping to virtual resource blocks, for each antenna port used for physical channel transmission, the UE shall assume the complex-valued symbol The blocks conform to the downlink power allocation specified in [6, TS 38.214] and are derived from y (p) (0) starts to be mapped sequentially to resource elements (k′, l) in the virtual resource block allocated for transmission p，μ , these resource elements meet all of the following criteria: they are located within a virtual resource block allocated for transmission; the corresponding physical resource block is declared available for PDSCH (according to clause 5.1.4 of [6, TS 38.214]); and the corresponding resource elements in the corresponding physical resource block: are not used for the associated DM-RS transmission, or for the DM-RS of other co-scheduled UEs (as described in clause 7.4.1.1.2); if the corresponding physical resource block is used for PDSCH scheduled by a physical downlink control channel (PDCCH) with a cyclic redundancy check (CRC), the CRC is checked by a C radio network temporary identifier (RNTI), MCS-C-RNTI, CS-RNTI, or a PDSCH with semi-persistent scheduling (SPS) scrambled, not used for non-zero power channel state information (CSI)-RS (according to clause 7.4.1.5), unless the non-zero power CSI-RS is a CSI-RS configured by the higher layer parameter CSI-RS-Resource-Mobility in the MeasObjectNR information element (IE), or unless the non-zero power CSI-RS is a non-periodic non-zero power CSI-RS resource; not used for phase tracking reference signal (PT-RS) (according to clause 7.4.1.2); not declared as unavailable for PDSCH (according to clause 5.1.4 of [6, TS 38.214]).

[0044] to resource elements (k′, l) allocated for PDSCH (according to [6, TS 38.214]) and not reserved for other purposes p，μ The mapping shall be performed in ascending order, starting with index k' on the allocated virtual resource blocks, where k'=0 is the first subcarrier in the lowest numbered virtual resource block allocated for transmission, followed by index l. Regarding the mapping from virtual resource blocks to physical resource blocks, the UE shall assume that the virtual resource blocks are mapped to physical resource blocks according to the indicated mapping scheme, non-interleaved or interleaved mapping. If no mapping scheme is indicated, the UE shall assume non-interleaved mapping. For non-interleaved virtual resource block (VRB) to physical resource block (PRB) mapping, virtual resource block n is mapped to physical resource block n, except for PDSCH transmissions scheduled using DCI format 1_0 in the common search space, in which case virtual resource block n is mapped to physical resource block in is the lowest numbered physical resource block in the control resource set in which the corresponding DCI is received.

[0045] For interleaved VRB to PRB mapping, the mapping process is defined by resource block bundles and virtual resource blocks. Resource block bundles are defined as follows. For PDSCH transmissions scheduled using DCI format 1_0 in the Type0-PDCCH common search space of control resource set (CORESET) 0 (where CRC is scrambled by SI-RNTI), the CRC in CORESET 0 is scrambled by SI-RNTI. The set of resource blocks is divided into resource block bundles, where L = 2 is the bundle size, and is the size of CORESET 0. If Resource block bundle N bundle -1 Included resource blocks, otherwise L resource blocks, all other resource block bundles include L resource blocks. PDSCH transmissions scheduled using DCI format 1_0 in any common search space of CORESET 0, except the Type0-PDCCH common search space in CORESET 0. A collection of virtual resource blocks The virtual resource block numbers and virtual bundle numbers are divided into N bundle virtual resource block bundles, where is the size of CORESET 0 (if CORESET 0 is configured for the cell), or the size of the initial downlink bandwidth portion (if CORESET 0 is not configured for the cell), and A collection of physical resource blocks The physical resource block number and the physical bundle number are divided into N bundle Physical resource block bundles, where L = 2 is the bundle size, and is the lowest numbered physical resource block in the control resource set in which the corresponding DCI is received.

[0046] Resource block bundle 0 includes resource blocks, resource block bundle N bundle -1 Included resource blocks (if ) and L resource blocks (otherwise), all other resource block bundles include L resource blocks. For all other PDSCH transmissions, the starting position in bandwidth part i is of The set of resource blocks is divided into resource block bundles, where Li is the bundle size of bandwidth part i provided by the higher layer parameter vrb-ToPRB interleaver, and resource block bundle 0 consists of resource blocks, resource block bundle N bundle -1 Included resource blocks (if ) or L i resource blocks (otherwise), all other resource block bundles include L i resource blocks.

[0047] According to the virtual resource block bundle N bundle -1 is mapped to physical resource block bundle N bundle -1, interval j∈{0, 1, ..., N bundle The virtual resource blocks in the virtual resource block bundle j∈{0, 1, ..., N -1} are mapped to physical resource blocks. bunble -2} is mapped to physical resource block bundle f (j) , where: f (j) =rC+c; j=cR+r; r=0, 1,..., R-1; c=0, 1,..., C-1; R=2; The UE should not be configured with L i =2, where the PRG size is four (4). The UE may assume that the same precoding in the frequency domain is used within a PRB bundle and the bundle size is deterministic (according to clause 5.1.2.3 in [6, TS 38.214]). The UE should not assume that the same precoding is used for different common resource block bundles.

[0048] With reference to antenna port quasi-colocation, a UE may be configured with a list of up to M TCI state configurations in the higher layer parameter PDSCH-config to decode the PDSCH based on the detected PDCCH, where the DCI is for the UE and a given serving cell, where M depends on the UE capability maxNumberConfiguredTCIstatesPerCC. Each TCI state contains parameters for configuring a quasi-colocation relationship between one or two downlink reference signals and the DM-RS ports of the PDSCH, the DM-RS ports of the PDCCH, or (multiple) CSI-RS ports of the CSI-RS resources. The quasi-colocation relationship is configured by the higher layer parameter qcl-Type1 for the first DL RS and the higher layer parameter qcl-Type2 for the second DL RS (if configured). For the case of two DL RSs, the quasi-colocation (QCL) type should not be the same, regardless of whether the same DL RS or different DL RSs are referenced. The quasi-colocation type corresponding to each DL RS is given by the high-level parameter qcl-Type in QCL-Info and can take one of the following values: 'typeA': {Doppler shift, Doppler spread, average delay, delay spread}; 'typeB': {Doppler shift, Doppler spread}; 'typeC': {Doppler shift, average delay}; or 'typeD': {spatial Rx parameters}.

[0049] The UE receives an activation command for mapping up to eight (8) TCI states to codepoints of the DCI field 'Transmission Configuration Indication' in one control channel (CC) / DL bandwidth part (BWP) or CC / DL BWP set, respectively. When a TCI state set ID is activated for a CC / DL BWP set, where the applicable list of CCs is determined by the indicated CC in the activation command, the same set of TCI state IDs shall be applied to all DL BWPs in the indicated CC. When the UE supports two TCI states in the codepoints of the DCI field 'Transmission Configuration Indication', the UE may receive an activation command for mapping up to eight (8) combinations of one or two TCI states to codepoints in the DCI field 'Transmission Configuration Indication'. It is expected that the UE will not receive more than eight (8) TCI states in the activation command. When there is a DCI field 'Transmission Configuration Indication' in DCI format 1_2, and when the number of codepoints S in the DCI field 'Transmission Configuration Indication' of DCI format 1_2 is less than the number of TCI codepoints activated by the activation command, only the first S activated codepoints are applied to DCI format 1_2.

[0050] When the UE sends a physical uplink control channel (PUCCH) with hybrid automatic repeat request acknowledgement (HARQ-ACK) information in slot n corresponding to the PDSCH carrying the activation command, the indication mapping between the TCI state and the code point of the DCI field 'Transmission Configuration Indication' shall be from slot n to the PDSCH carrying the activation command. tci-PresentInDCI is set to 'enabled', or tci-PresentDCI-1-2 is configured for CORESET scheduling of PDSCH, and the time offset between the reception of the DL DCI and the corresponding PDSCH is equal to or greater than timeDurationForQCL (if applicable), then after the UE receives the initial higher layer configuration of the TCI state, and before the activation command is received, the UE may assume that the DM-RS ports of the PDSCH of the serving cell are quasi-colocated with the synchronization signal (SS) / physical broadcast channel (PBCH) blocks determined during the initial access procedure with respect to qcl-Type set to 'typeA' and, where applicable, also with respect to qcl-Type set to 'typeD'.

[0051] If the UE is configured with the higher layer parameter tci-PresentInDCI set to 'enabled' for CORESET scheduling of PDSCH, the UE assumes that the TCI field is present in DCI format 1_1 of PDCCH sent on CORESET 1. If the UE is configured with the higher layer parameter tci-PresentDCI-1-2 for CORESET scheduling of PDSCH, the UE assumes that the TCI field is present in DCI format 1_2 of PDCCH sent on CORESET with the DCI field size indicated by tci-PresentDCI-1-2. If the PDSCH is scheduled by a DCI format in which the TCI field is not present, and the time offset between the reception of the DL DCI and the corresponding PDSCH of the serving cell is equal to or greater than the threshold timeDurationForQCL (if applicable), where the threshold is based on the reported capability of the UE to determine PDSCH antenna port quasi-collocation, the UE assumes that the TCI state or QCL assumption for the PDSCH is the same as the TCI state or QCL assumption of the CORESET applied for PDCCH transmissions within the active BWP of the serving cell.

[0052] If the PDSCH is scheduled by a DCI format with a TCI field, the TCI field in the DCI in the scheduled component carrier points to an activated TCI state in the scheduled component carrier or DL ​​BWP, and the UE shall use the TCI state according to the value of the 'Transmission Configuration Indication' field in the detected PDCCH with DCI to determine the PDSCH antenna port quasi-colocation. If the time offset between the DL DCI and the reception of the corresponding PDSCH is equal to or greater than the threshold timeDurationForQCL, the UE may assume that the DM-RS ports of the PDSCH of the serving cell are quasi-colocated with the (multiple) RS of the TCI state with respect to the (multiple) QCL type parameters given by the indicated TCI state, where the threshold is based on the reported UE capabilities. When the UE is configured with a single-slot PDSCH, the indicated TCI state shall be based on the activated TCI state in the slot with the scheduled PDSCH.

[0053] When the UE is configured with multi-slot PDSCH, the indicated TCI state shall be based on the activated TCI state in the first slot with scheduled PDSCH, and the UE shall expect the same active TCI state in slots with scheduled PDSCH. When the UE is configured with a CORESET associated with a search space set for cross-carrier scheduling, and the UE is not configured with enableDefaultBeamForCCS, the UE expects tci-PresentInDCI to be set to 'enabled', or tci-PresentDCI-1-2 to be configured for the CORESET, and if one or more TCI states configured for a serving cell scheduled by the search space set contain qcl-Type set to 'typeD', the UE expects the time offset between the detected PDCCH in the search space set and the reception of the corresponding PDSCH to be greater than or equal to the threshold timeDurationForQCL.

[0054] Independent of the configuration of tci-PresentInDCI and tci-PresentDCI-1-2 in Radio Resource Control (RRC) connected mode, if the offset between the reception of the DL DCI and the corresponding PDSCH is less than the threshold timeDurationForQCL, and at least one configured TCI state of the serving cell scheduling the PDSCH contains a qcl-Type set to 'typeD', then the UE may assume that the DM-RS ports of the PDSCH of the serving cell are quasi-collocated with (multiple) RS with respect to (multiple) QCL parameters for the PDCCH quasi-collocated indication of the CORESET associated with the monitoring search space with the lowest controlResourceSetId in the latest slot in which the UE monitors one or more core groups within the active BWP of the serving cell. In this case, if the qcl-Type of the PDSCH DM-RS is set to 'typeD' and is different from the PDCCH DM-RS that they overlap in at least one symbol, the UE shall give priority to receiving the PDCCH associated with that CORESET. This also applies to the intra-band carrier aggregation (CA) case (when PDSCH and CORESET are located in different component carriers).

[0055] If the UE is configured with enableDefaultTCIStatePerCoresetPoolIndex and the UE is configured by a higher layer parameter PDCCH-Config containing two different coresetPoolIndex values ​​in different ControlResourceSets, the UE may assume that the DM-RS ports of the PDSCH associated with the coresetPoolIndex value of the serving cell are quasi-colocated with (multiple) RS with respect to (multiple) QCL parameters for the PDCCH quasi-colocation indication of the CORESET associated with the monitoring search space with the lowest controlResourceSetId in the CORESETs configured with the same coresetPoolIndex value as the PDCCH scheduling the PDSCH in the latest timeslot, in which one or more CORESETs associated with the same coresetPoolIndex value of the PDCCH scheduling the PDSCH within the active BWP of the serving cell are monitored by the UE. In this case, if the 'QCL-TypeD' of the PDSCH DM-RS is different from the 'QCL-TypeD' of the PDCCH DM-RS they overlap in at least one symbol and they are associated with the same coresetPoolIndex, the UE shall prioritize receiving the PDCCH associated with the CORESET. This also applies to the intra-band CA case (when the PDSCH and CORESET are located in different component carriers).

[0056] If the UE is configured with enableTwoDefaultTCI-States and at least one TCI codepoint indicates two TCI states, the UE may assume that the DM-RS ports of the PDSCH or PDSCH transmission opportunity of the serving cell are quasi-colocated with the RS(s) with respect to the QCL parameter(s) associated with the TCI state corresponding to the lowest codepoint of the TCI codepoints containing two different TCI states. When the UE is configured by the higher layer parameter repetitionScheme set to 'tdmSchemeA' or is configured with the higher layer parameter repetitionNumber, according to clause 5.1.2.1, the mapping of TCI states to PDSCH transmission opportunities may be determined by replacing the indicated TCI state with the TCI state corresponding to the lowest codepoint of the TCI codepoints containing two different TCI states based on the activated TCI state in the timeslot with the first PDSCH transmission opportunity. In this case, if the 'QCL-TypeD' in the two TCI states corresponding to the lowest codepoint in the TCI codepoints containing two different TCI states is different from the 'QCL-TypeD' of the PDCCH DM-RS that they overlap in at least one symbol, the UE shall prioritize receiving the PDCCH associated with that CORESET. This also applies to intra-band CA cases (when the PDSCH and CORESET are located in different component carriers). In all the above cases, if none of the configured TCI states of the serving cell scheduling the PDSCH is configured with a qcl-Type set to 'typeD', the UE shall obtain the other QCL assumption from the indicated TCI state of its scheduled PDSCH, regardless of the time offset between the reception of the DL DCI and the corresponding PDSCH.

[0057] Conventional wireless communication designs are built on surface electromagnetic waves. However, electromagnetic waves have not only linear momentum, but also angular momentum, which includes spin angular momentum (SAM) or OAM. OAM is a wavefront with a spiral phase OAM and a large amount of topological charge, known as an OAM mode. Beams with different OAM modes are orthogonal to each other and can be multiplexed and demultiplexed together, thereby increasing capacity without relying on traditional resources such as time and frequency. OAM is formed by microscopic particles moving in a circle along the propagation direction, which is related to the spatial distribution of the particles. It is macroscopically represented as a vortex beam carrying a wavefront phase factor exp(jlφ) (where "l" is the topological charge or azimuthal order or index of the wave, or even the rolling index, and determines the number of OAM modes, and "φ" represents the transmission phase angle or rolling angle).

[0058] Figure 2An example 200 of an OAM pattern of an OAM wave associated with an OAM data channel configuration is illustrated. Figure 3 An example 230 of antenna phase and OAM pattern generation associated with an OAM data channel configuration is illustrated. Figure 3 Reference: Appl. Sci. 2019, 9, 1729; doi: 10.3390 / app9091729, licensed under Creative Commons BY 4.0). To generate a beam carrying OAM mode n (L=n), the antenna elements are connected to phase shifters that perform n×360 degree rotations. Example 300 illustrates beamforming of OAM modes 0, 1, and 2 using a uniform circular array (UCA) comprising eight (8) antenna elements.

[0059] Figure 4 An example 400 of multiple OAM mode generation implemented with multiple uniform circular arrays in relation to an OAM data channel configuration is illustrated. Figure 4 Reference: Appl. Sci. 2019, 9, 1729; doi: 10.3390 / app9091729, licensed under Creative Commons BY 4.0). It is worth noting that, as shown in Example 400, a single UCA or multiple UCAs can be used for multiple OAM mode generation. In the former case, the superimposed beam is transmitted by a single UCA. In the latter case, concentric multiple UCAs can be used. The separation of beams carrying OAM modes can be similar to the generation using antenna elements connected to phase shifters, where the phase shifters have relative rotation directions. As long as the number of antenna elements is greater than 2n, the n×360 degree rotations are orthogonal to each other. Therefore, each OAM mode can be separated from the signal of the mixed OAM mode without aliasing. This beam separation can also be achieved by using a single UCA or multiple UCAs, just like in beamforming. Note that in the former case, a frequency divider is provided between the antenna element and the phase shifter. To avoid confusion with the term "multiple UCAs," the present disclosure relates to superposition-based beamforming using a single UCA, as previously described. As shown in example 400, multiple antenna arrays can generate the same OAM mode simultaneously.

[0060] In terms of OAM data channel configuration and the above-mentioned techniques, OAM modes with different topological charge values ​​of the wave are mutually orthogonal, and therefore, eddy current beams carrying different OAM modes can provide independent communication channels for efficient information transmission. In the present disclosure, signaling aspects relate to the mapping and indication of data channels multiplexed with OAM modes. Specifically, different codewords can be mapped and / or indicated so that diversity and spatial multiplexing schemes can be used together with OAM multiplexing. Configuration techniques for indicating OAM modes when data is to be multiplexed with OAM modes and when OAM modes are generated in parallel using multiple arrays are also described, thereby utilizing MIMO and OAM multiplexing simultaneously.

[0061] In an implementation of an OAM data channel configuration, an indication may be provided to the UE explicitly or implicitly, the indication having at least one OAM mode index applied to the data channel, the number of total OAM modes applied, a diversity coupled to the OAM mode, or a spatial multiplexing scheme, or a combination thereof. The OAM mode order may be increased indefinitely, resulting in an uncertain spatial multiplexing order for OAM multiplexed transmissions. Depending on the antenna type, multiple OAM modes may be generated simultaneously. In one implementation, the number of baseband spatial streams or RF chains corresponds to the number of OAM modes, where the diversity or spatial multiplexing scheme may be additionally coupled to the number of OAM modes. For example, based on CSI feedback from the UE, two mode numbers may be used for diversity, and two OAM modes may be used for spatial multiplexing.

[0062] In one implementation, a one-to-one relationship between layer mapping and OAM modes may be defined and specified in the specification, where the number of layers per codeword is at least equal to the specified number of OAM modes. For example, if OAM is applied to a downlink system with an orthogonal frequency division multiplexing (OFDM) waveform, the UE knows the number of layers (i.e., from Table 7.3.1.3-1 above), and the number of layers may be increased based on the OAM mode order (the number of OAM modes) for each codeword. For example, if the OAM mode order is five, the number of layers will increase to ten (10) layers (i.e., five layers per codeword), and the number of modulation symbols per layer will also be defined for the additional layers (i.e., for codewords one (1) and five layers, ). In this case, the indication of the number of layers may represent the number of modes used, and vice versa.

[0063] In one implementation, a mapping matrix is ​​used in baseband processing that maps the number of layers corresponding to transport blocks (TBs) or different code block groups or different codewords to OAM patterns, where the elements of the matrix define which baseband spatial streams will use which diversity scheme (diversity or spatial multiplexing). For example, the vector [x (0) (i)...x (υ-1) (i)] T piece Should be mapped to antenna ports according to the following formula:

[0064]

[0065] in {p0, ..., p υ-1} represents the antenna port, and W b (i) is the mapping matrix of the OAM mode. For example, if spatial multiplexing is to be applied, the number of layers will correspond one-to-one to the antenna ports (i.e., the mapping matrix is ​​the identity matrix). In one implementation, the number of ports may represent the OAM mode order. Different types of mapping matrices W may be designed and specified in the specification. b (i), and the index corresponding to the matrix can be dynamically configured through DCI or MAC CE or high-level signaling RRC.

[0066] In one implementation, one or more OAM indexes are indicated for a scheduled data channel, where the indication can be dynamically configured via DCI, MAC CE, RRC signaling, or a combination thereof. For example, if DCI format 1_0 is used for scheduling of PDSCH in a cell, a new field is used to indicate at least one OAM mode index corresponding to the indicated modulation and coding scheme (MCS) value. The bit length depends on the number of applicable OAM modes and corresponds to a row index of a table indicating OAM mode values ​​(positive integer values ​​and / or negative integer values). The table showing the relationship between the configuration index and the OAM mode can be additionally configured via RRC signaling, as shown in Table T1, or can be predefined in the specification.

[0067] Table T1: Configuration index of different OAM modes:

[0068] index OAM Mode Value 1 -2 2 -1 3 1 4 2

[0069] In one implementation, there is a one-to-one mapping between OAM modes and TCI states. For example, a mapping table between OAM modes and TCI states may be defined, in which an indication of one TCI state will indicate a predefined OAM mode. In one implementation, when multiple OAM modes are indicated, the TCI state may correspond to all OAM modes. Alternatively, one TCI state may be indicated, and the rank of greater than or equal to two (rank>=2) spatial multiplexing transmissions for DL ​​reception and / or UL transmission may be indicated to the UE. This means that all indicated OAM modes use different physical downlink control channels (PDCCH) physical downlink control channels (PDCCH) TBs (or code block groups or codewords) mapped to each RF chain. In one or more implementations, when only one OAM mode is indicated (e.g., by DCI), while two or more TCI states are indicated and rank 1 diversity transmission for DL ​​reception and / or UL transmission is indicated to the UE, this will mean that all indicated beams use the same indicated OAM mode, and the same TB (or code block group or codeword) is mapped to all configured beams.

[0070] Figure 5 An example 500 of flow generation corresponding to the OAM mode of a UCA array associated with an OAM data channel configuration is illustrated. Various aspects of the present disclosure provide OAM-MIMO multiplexing with multiple antenna arrays that generate OAM modes in parallel. Although the OAM mode order can be increased indefinitely, the higher OAM mode index or order is more spatially dispersed with increasing propagation distance, thereby limiting the spatial multiplexing order that can be actually used. This problem can be solved if MIMO is combined with OAM (referred to herein as OAM-MIMO). Examples of such arrays are shown in FIG. Figure 4 4, where four UCAs are used with a center element for symmetry. Each UCA can generate multiple OAM modes. For example, if each UCA layer generates five (5) lower order OAM modes (e.g., -2, -1, 0, 1, 2), a total of twenty-one (21) streams can be generated simultaneously, thereby increasing the spatial multiplexing order while solving the divergence problem of higher OAM modes, as shown in this example 500, where M-2, M-1, M0, M1, M2 correspond to spatial streams to be mapped to OAM modes -2, -1, 0, 1, 2 after baseband processing. By utilizing MIMO technology, signals can be separated between multiple sets of the same OAM mode while maintaining the non-interference characteristics between different OAM modes.

[0071] In an implementation of OAM-MIMO, a UE may receive the same OAM mode index (one or more) that is spatially separated and corresponds to multiple TCI states (beams). In one implementation, the UE may be indicated (configured) the number of parallel arrays used for OAM generation. For example, the UE may be indicated via RRC signaling, where a group number or index for each antenna array is specified. In one implementation, the number of arrays used to generate OAM modes in parallel will correspond to the number of TCI states. For example, in example 500, a total of five (5) states may be configured to the UE, where each TCI state will correspond to an OAM mode order. In one implementation, the mode order is the same for all TCI states, and only one TCI state mode number indication is required because it applies to all TCI states. For example, if the DCI or RRC only indicates a mode index for data transmission and / or reception, and no specific relationship with the TCI state is indicated, the UE will default to assuming that these OAM modes apply to all TCI states. In the implementation of each TCI state, the list of configured OAM modes can be indicated by DCI, MAC CE, or RRC signaling, where each TCI state may or may not have the same number of OAM mode indices. In one implementation, an array that only generates a zero pattern can be considered as a default setting, and a specific TCI state can be specified for that mode.

[0072] In one or more implementations, a set of OAM modes is indicated, multiple TCI states are indicated, and rank 1 / diversity transmission for DL ​​reception and / or UL transmission is indicated to the UE. In this implementation, multiple beams are deployed, each of which has multiple streams with OAM multiplexed data having an OAM mode defined in the set. In addition, the same TB (or code block group or codeword) is used to generate the same OAM index generated by different arrays and sent on multiple beams corresponding to multiple antenna arrays. In one or more implementations, a set of OAM modes is indicated, and multiple TCI states are indicated, whose rank is greater than or equal to two (rank>=2) spatial multiplexing transmissions to the UE for DL ​​reception and / or UL transmission. In this implementation, multiple beams are deployed, each of which has multiple streams with OAM multiplexed data having an OAM mode defined in the set. In addition, different TBs (or code block groups or codewords) are used to generate the same OAM index generated by different arrays and sent on multiple beams corresponding to multiple antenna arrays.

[0073] Various aspects of the present disclosure provide DM-RS association for OAM multiplexed data channels. In one or more implementations, the DM-RS ports may be extended in the orbital angle domain, where the same or different DM-RS ports may be associated with an OAM mode. In one implementation, the same DM-RS port (or CDM group) may be used for any of the following combinations: same OAM mode index, same beam; different OAM mode index, same beam; same OAM mode index, different beam; and / or different OAM mode index, different beam. In one implementation, the number of DM-RS antenna ports may be extended and may correspond to the number of mode indices and / or TCI states. In one implementation, when the same DM-RS port is used for any of the above cases, more than one codeword may be sent when four (4) or fewer DM-RS ports are indicated to the UE using the (multiple) antenna port indication field in the DCI. In another implementation, if the same DM-RS port is used for different OAM modes, the initialization of the DM-RS base sequence may be different and associated with the OAM mode index.

[0074] Figure 6 An example of a block diagram 600 of a device 602 supporting OAM data channel configuration in accordance with aspects of the present disclosure is illustrated. The device 602 may be an example of a UE 104 as described herein. The device 602 may support wireless communications and / or network signaling with one or more base stations 102, other UEs 104, network entities and devices, or any combination thereof. The device 602 may include components for bidirectional communications, including components for sending and receiving communications, such as a communication manager 604, a processor 606, a memory 608, a receiver 610, a transmitter 612, and an I / O controller 614. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., a bus).

[0075] The communication manager 604, the receiver 610, the transmitter 612, or various combinations thereof or various components thereof may be examples of means for performing various aspects of the disclosure described herein. For example, the communication manager 604, the receiver 610, the transmitter 612, or various combinations or components thereof may support methods for performing one or more functions described herein.

[0076] In some implementations, the communication manager 604, the receiver 610, the transmitter 612, or various combinations or components thereof may be implemented in hardware (e.g., in a communication management circuit system). The hardware may include a processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof, which is configured to or otherwise supports means for performing the functions described in the present disclosure. In some implementations, the processor 606 and a memory 608 coupled to the processor 606 may be configured to perform one or more functions described herein (e.g., by executing instructions stored in the memory 608 by the processor 606).

[0077] Additionally or alternatively, in some implementations, the communication manager 604, the receiver 610, the transmitter 612, or various combinations or components thereof may be implemented in code executed by the processor 606 (e.g., as communication management software or firmware). If implemented in code executed by the processor 606, the functionality of the communication manager 604, the receiver 610, the transmitter 612, or various combinations or components thereof may be performed by a general purpose processor, a DSP, a central processing unit (CPU), an ASIC, an FPGA, or any combination of these or other programmable logic devices (e.g., configured or otherwise supported to perform the functions described in the present disclosure).

[0078] In some implementations, the communication manager 604 may be configured to perform various operations (e.g., receive, monitor, transmit) using or otherwise cooperating with the receiver 610, the transmitter 612, or both. For example, the communication manager 604 may receive information from the receiver 610, send information to the transmitter 612, or combine with the receiver 610, the transmitter 612, or both to receive information, send information, or perform various other operations described herein. Although the communication manager 604 is illustrated as a separate component, in some implementations, one or more functions described with reference to the communication manager 604 may be supported or performed by the processor 606, the memory 608, or any combination thereof. For example, the memory 608 may store code that may include instructions executable by the processor 606 to cause the device 602 to perform various aspects of the present disclosure as described herein, or the processor 606 and the memory 608 may be configured to perform or support such operations.

[0079] For example, according to the examples disclosed herein, the communication manager 604 can support wireless communication and / or network signaling at a device (e.g., device 602, UE). The communication manager 604 and / or other device components can be configured as or otherwise support an apparatus such as a UE, the apparatus comprising a transceiver; a processor coupled to the transceiver, the processor and the transceiver being configured to cause the apparatus to: receive signaling indicating an OAM multiplexing configuration of one or more configured OAM modes from a base station; and apply at least one of the configured OAM modes to at least one of receiving a downlink transmission or sending an uplink transmission.

[0080] In addition, the device (e.g., UE) includes any one or combination of the following: the processor is configured to cause the device to: map at least one configured OAM mode with at least one TCI for receiving downlink transmission or sending uplink transmission. The processor is configured to cause the device to: apply the first configured OAM mode to receive downlink transmission, and apply the second configured OAM mode to send uplink transmission. The number of one or more configured OAM modes is indicated by one of DCI signaling or RRC signaling. The OAM multiplexing configuration includes: the number of channel layers mapped to the number of codewords for spatial multiplexing, and the number of channel layers per codeword is at least equal to the number of one or more configured OAM modes. The number of channel layers indicates: the number of one or more configured OAM modes for receiving downlink transmission. The number of channel layers indicates: the number of one or more configured OAM modes for sending uplink transmission. The signaling indicating the OAM multiplexing configuration includes a mapping matrix that maps the number of channel layers to one or more configured OAM modes associated with utilizing spatial multiplexing. The index associated with the mapping matrix is ​​indicated by at least one of DCI signaling, MAC CE signaling, or RRC signaling. The signaling indicating the OAM multiplexing configuration includes a mapping matrix that maps the number of channel layers to one or more configured OAM modes associated with utilizing a diversity scheme. The index associated with the mapping matrix is ​​indicated by at least one of DCI signaling, MAC CE signaling, or RRC signaling. The number of TCI states corresponds to the number of one or more configured OAM modes. The number of one or more configured OAM modes corresponds to one TCI state. The signaling indicating the OAM multiplexing configuration includes: the number of one or more configured OAM modes associated with the corresponding TCI state, and the corresponding TCI state corresponds to the antenna array set. The TCI state indicates the number of antenna arrays in the antenna array set for generating the OAM mode index for the same configuration. The signaling indicating the OAM multiplexing configuration indicates the OAM mode index set applicable to the TCI state. The signaling indicating the OAM multiplexing configuration indicates different OAM mode index sets applicable to the TCI state. The signaling indicating the OAM multiplexing configuration includes: a set of one or more configured OAM modes, a set of TCI states, and an indication of a rank-2 transmission for at least one of receiving a downlink transmission or sending an uplink transmission. The signaling indicating the OAM multiplexing configuration includes: an association of a DM-RS port with one or more configured OAM modes.

[0081] The communication manager 604 and / or other device components may be configured as or otherwise support a component for wireless communication and / or network signaling at a UE, the wireless communication and / or network signaling comprising: receiving signaling indicating an OAM multiplexing configuration of one or more configured OAM modes; and applying at least one of the configured OAM modes to at least one of receiving a downlink transmission or sending an uplink transmission.

[0082] In addition, wireless communication and / or network signaling at the UE includes any one or combination of the following: mapping at least one configured OAM mode with at least one TCI for receiving downlink transmissions or sending uplink transmissions. The method also includes: applying the first configured OAM mode to receiving downlink transmissions; and applying the second configured OAM mode to sending uplink transmissions. The number of one or more configured OAM modes is indicated by one of DCI signaling or RRC signaling. The OAM multiplexing configuration includes: the number of channel layers mapped to the number of codewords for spatial multiplexing, and the number of channel layers per codeword is at least equal to the number of one or more configured OAM modes. The number of channel layers indicates: the number of one or more configured OAM modes for receiving downlink transmissions. The number of channel layers indicates: the number of one or more configured OAM modes for sending uplink transmissions. The signaling indicating the OAM multiplexing configuration includes a mapping matrix that maps the number of channel layers to one or more configured OAM modes associated with utilizing spatial multiplexing. The index associated with the mapping matrix is ​​indicated by at least one of DCI signaling, MAC CE signaling, or RRC signaling. The signaling indicating the OAM multiplexing configuration includes a mapping matrix that maps the number of channel layers to one or more configured OAM modes associated with utilizing a diversity scheme. The index associated with the mapping matrix is ​​indicated by at least one of DCI signaling, MAC CE signaling, or RRC signaling. The number of TCI states corresponds to the number of one or more configured OAM modes. The number of one or more configured OAM modes corresponds to one TCI state. The signaling indicating the OAM multiplexing configuration includes: the number of one or more configured OAM modes associated with the corresponding TCI state, and the corresponding TCI state corresponds to the antenna array set. The number of TCI states indicates the number of antenna arrays in the antenna array set for generating the OAM mode index for the same configuration. The signaling indicating the OAM multiplexing configuration indicates the OAM mode index set applicable to the TCI state. The signaling indicating the OAM multiplexing configuration indicates different OAM mode index sets applicable to the TCI state. The signaling indicating the OAM multiplexing configuration includes: a set of one or more configured OAM modes, a set of TCI states, and an indication of a rank-two transmission for receiving at least one of a downlink transmission or sending an uplink transmission. The signaling indicating the OAM multiplexing configuration includes: an association of a demodulation reference signal (DMRS) port with one or more configured OAM modes.

[0083] The processor 606 may include an intelligent hardware device (e.g., a general purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some implementations, the processor 606 may be configured to operate a memory array using a memory controller. In some other implementations, the memory controller may be integrated into the processor 606. The processor 606 may be configured to execute computer-readable instructions stored in a memory (e.g., a memory 608) to cause the device 602 to perform various functions of the present disclosure.

[0084] The memory 608 may include random access memory (RAM) and read-only memory (ROM). The memory 608 may store computer-readable computer executable code, which includes instructions that, when executed by the processor 606, cause the device 602 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such as a system memory or another type of memory. In some implementations, the code may not be directly executed by the processor 606, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein. In some implementations, the memory 608 may include a basic I / O system (BIOS), which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0085] I / O controller 614 can manage input and output signals for device 602. I / O controller 614 can also manage peripheral devices that are not integrated into device 602. In some implementations, I / O controller 614 can represent a physical connection or port to an external peripheral device. In some implementations, I / O controller 614 can use an operating system, such as Or other known operating systems. In some implementations, I / O controller 614 can be implemented as part of a processor such as processor 606. In some implementations, a user can interact with device 602 via I / O controller 614 or via hardware components controlled by I / O controller 615.

[0086] In some implementations, the device 602 may include a single antenna 616. However, in some other implementations, the device 602 may have more than one antenna 616, which may be capable of concurrently sending or receiving multiple wireless transmissions. The receiver 610 and the transmitter 612 may communicate bidirectionally via one or more antennas 616, wired or wireless links as described herein. For example, the receiver 610 and the transmitter 612 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver may also include a modem for modulating packets, providing the modulated packets to one or more antennas 616 for transmission, and demodulating packets received from one or more antennas 616.

[0087] Figure 7 An example of a block diagram 700 of a device 702 supporting OAM data channel configuration in accordance with aspects of the present disclosure is illustrated. The device 702 may be an example of a base station 102 (e.g., a gNB) as described herein. The device 702 may support wireless communications and / or network signaling with one or more base stations 102, other UEs 104, core network devices and functions (e.g., core network 106), or any combination thereof. The device 702 may include components for bidirectional communications, including components for sending and receiving communications, such as a communication manager 704, a processor 706, a memory 708, a receiver 710, a transmitter 712, and an I / O controller 714. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., a bus).

[0088] The communication manager 704, the receiver 710, the transmitter 712, or various combinations thereof, or various components thereof, may be examples of means for performing various aspects of the present disclosure described herein. For example, the communication manager 704, the receiver 710, the transmitter 712, or various combinations thereof, or components thereof, may support methods for performing one or more functions described herein.

[0089] In some implementations, the communication manager 704, the receiver 710, the transmitter 712, or various combinations or components thereof may be implemented in hardware (e.g., in a communication management circuit system). The hardware may include a processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof, which is configured to or otherwise supports means for performing the functions described in the present disclosure. In some implementations, the processor 706 and the memory 708 coupled to the processor 706 may be configured to perform one or more functions described herein (e.g., by executing instructions stored in the memory 708 by the processor 706).

[0090] Additionally or alternatively, in some implementations, the communication manager 704, the receiver 710, the transmitter 712, or various combinations or components thereof may be implemented in code executed by the processor 706 (e.g., as communication management software or firmware). If implemented in code executed by the processor 706, the functionality of the communication manager 704, the receiver 710, the transmitter 712, or various combinations or components thereof may be performed by a general purpose processor, a DSP, a central processing unit (CPU), an ASIC, an FPGA, or any combination of these or other programmable logic devices (e.g., configured or otherwise supported to perform the functions described in the present disclosure).

[0091] In some implementations, the communication manager 704 may be configured to perform various operations (e.g., receive, monitor, transmit) using or otherwise cooperating with the receiver 710, the transmitter 712, or both. For example, the communication manager 704 may receive information from the receiver 710, send information to the transmitter 712, or combine with the receiver 710, the transmitter 712, or both to receive information, send information, or perform various other operations described herein. Although the communication manager 704 is illustrated as a separate component, in some implementations, one or more functions described with reference to the communication manager 704 may be supported or performed by the processor 706, the memory 708, or any combination thereof. For example, the memory 708 may store code that may include instructions executable by the processor 706 to cause the device 702 to perform various aspects of the present disclosure as described herein, or the processor 706 and the memory 708 may be configured to perform or support such operations.

[0092] For example, according to examples disclosed herein, the communication manager 704 can support wireless communications and / or network signaling at a device (e.g., device 702, such as a base station). The communication manager 704 and / or other device components can be configured as or otherwise support an apparatus such as a base station, the apparatus comprising a transceiver; a processor coupled to the transceiver, the processor and the transceiver being configured to cause the apparatus to: send to a UE a signaling indicating an OAM multiplexing configuration of one or more configured OAM modes to be applied at the UE to at least one of receiving a downlink transmission or sending an uplink transmission; and receive from the UE an uplink transmission to which at least one of the one or more configured OAM modes is applied.

[0093] In addition, the device (e.g., a base station) includes any one or a combination of the following: signaling is sent to the UE to map at least one configured OAM mode with at least one TCI for receiving a downlink transmission or sending an uplink transmission. The number of one or more configured OAM modes is indicated by one of DCI signaling or RRC signaling. The OAM multiplexing configuration includes: the number of channel layers mapped to the number of codewords for spatial multiplexing, and the number of channel layers per codeword is at least equal to the number of one or more configured OAM modes. The number of channel layers indicates: the number of one or more configured OAM modes for the UE to receive downlink transmissions. The number of channel layers indicates: the number of one or more configured OAM modes for the UE to send uplink transmissions. The signaling indicating the OAM multiplexing configuration includes a mapping matrix that maps the number of channel layers to one or more configured OAM modes associated with utilizing spatial multiplexing. The index associated with the mapping matrix is ​​indicated by at least one of DCI signaling, MAC CE signaling, or RRC signaling. The signaling indicating the OAM multiplexing configuration includes a mapping matrix that maps the number of channel layers to one or more configured OAM modes associated with utilizing a diversity scheme. The index associated with the mapping matrix is ​​indicated by at least one of DCI signaling, MAC CE signaling, or RRC signaling. The number of TCI states corresponds to the number of one or more configured OAM modes. The number of one or more configured OAM modes corresponds to a TCI state. The signaling indicating the OAM multiplexing configuration includes: the number of one or more configured OAM modes associated with the corresponding TCI state, and the corresponding TCI state corresponds to an antenna array set. The TCI state indicates the number of antenna arrays in the antenna array set for generating the OAM mode index for the same configuration. The signaling indicating the OAM multiplexing configuration indicates the OAM mode index set applicable to the TCI state. The signaling indicating the OAM multiplexing configuration indicates different OAM mode index sets applicable to the TCI state. The signaling indicating the OAM multiplexing configuration includes: a set of one or more configured OAM modes, a set of TCI states, and an indication of a rank-two transmission for at least one of a UE receiving a downlink transmission or a UE sending an uplink transmission. The signaling indicating the OAM multiplexing configuration includes: an association of a DM-RS port with one or more configured OAM modes.

[0094] The communication manager 704 and / or other device components may be configured as or otherwise support a component for wireless communication and / or network signaling at a base station, the wireless communication and / or network signaling comprising: sending signaling to a UE, the signaling indicating: at the UE, an OAM multiplexing configuration of one or more configured OAM modes to be applied to at least one of receiving a downlink transmission or sending an uplink transmission; and receiving from the UE an uplink transmission to which at least one of the one or more configured OAM modes is applied.

[0095] In addition, the wireless communication at the base station includes any one or a combination of the following: signaling is sent to the UE to map at least one configured OAM mode with at least one TCI for receiving a downlink transmission or sending an uplink transmission. The number of one or more configured OAM modes is indicated by one of DCI signaling or RRC signaling. The OAM multiplexing configuration includes: the number of channel layers mapped to the number of codewords for spatial multiplexing, and the number of channel layers per codeword is at least equal to the number of one or more configured OAM modes. The number of channel layers indicates: the number of one or more configured OAM modes for the UE to receive downlink transmissions. The number of channel layers indicates: the number of one or more configured OAM modes for the UE to send uplink transmissions. The signaling indicating the OAM multiplexing configuration includes a mapping matrix that maps the number of channel layers to one or more configured OAM modes associated with utilizing spatial multiplexing. The index associated with the mapping matrix is ​​indicated by at least one of DCI signaling, MAC CE signaling, or RRC signaling. The signaling indicating the OAM multiplexing configuration includes a mapping matrix that maps the number of channel layers to one or more configured OAM modes associated with utilizing a diversity scheme. The index associated with the mapping matrix is ​​indicated by at least one of DCI signaling, MAC CE signaling, or RRC signaling. The number of TCI states corresponds to the number of one or more configured OAM modes. The number of one or more configured OAM modes corresponds to one TCI state. The signaling indicating the OAM multiplexing configuration includes: the number of one or more configured OAM modes associated with the corresponding TCI state, and the corresponding TCI state corresponds to the antenna array set. The number of TCI states indicates the number of antenna arrays in the antenna array set for generating the OAM mode index for the same configuration. The signaling indicating the OAM multiplexing configuration indicates the OAM mode index set applicable to the TCI state. The signaling indicating the OAM multiplexing configuration indicates different OAM mode index sets applicable to the TCI state. The signaling indicating the OAM multiplexing configuration includes: a set of one or more configured OAM modes, a set of TCI states, and an indication of a rank-two transmission for at least one of a UE receiving a downlink transmission or a UE sending an uplink transmission. The signaling indicating the OAM multiplexing configuration includes: an association of a DM-RS port with one or more configured OAM modes.

[0096] The processor 706 may include an intelligent hardware device (e.g., a general purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some implementations, the processor 706 may be configured to operate a memory array using a memory controller. In some other implementations, the memory controller may be integrated into the processor 706. The processor 706 may be configured to execute computer-readable instructions stored in a memory (e.g., a memory 708) to cause the device 702 to perform various functions of the present disclosure.

[0097] The memory 708 may include random access memory (RAM) and read-only memory (ROM). The memory 708 may store computer-readable computer executable code, which includes instructions that, when executed by the processor 706, cause the device 702 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such as a system memory or another type of memory. In some implementations, the code may not be directly executed by the processor 706, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein. In some implementations, the memory 708 may include a basic I / O system (BIOS), which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0098] I / O controller 714 can manage input and output signals for device 702. I / O controller 714 can also manage peripheral devices that are not integrated into device 702. In some implementations, I / O controller 714 can represent a physical connection or port to an external peripheral device. In some implementations, I / O controller 714 can use an operating system, such as Or other known operating systems. In some implementations, I / O controller 714 can be implemented as part of a processor such as processor 706. In some implementations, a user can interact with device 702 via I / O controller 714 or via hardware components controlled by I / O controller 715.

[0099] In some implementations, the device 702 may include a single antenna 716. However, in some other implementations, the device 702 may have more than one antenna 716, which may be capable of concurrently sending or receiving multiple wireless transmissions. The receiver 710 and the transmitter 712 may communicate bidirectionally via one or more antennas 716, wired or wireless links as described herein. For example, the receiver 710 and the transmitter 712 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver may also include a modem for modulating packets, providing the modulated packets to one or more antennas 716 for transmission, and demodulating packets received from one or more antennas 716.

[0100] Figure 8 A flow chart of a method 800 for supporting OAM data channel configuration according to aspects of the present disclosure is illustrated. The operations of the method 800 may be performed by, for example, a reference Figures 1 to 7 The UE 104 or other devices or components thereof are implemented and executed. In some implementations, the device can execute a set of instructions to control the functional elements of the device to perform the described functions. Additionally or alternatively, the device can use dedicated hardware to perform various aspects of the described functions.

[0101] At 802, the method may include receiving signaling indicating an OAM multiplexing configuration of one or more configured OAM modes. The operations of 802 may be performed according to examples as described herein. In some implementations, aspects of the operations of 802 may be performed by reference to Figure 1 The device is used to perform the above.

[0102] At 804, the method may include applying at least one of the configured OAM modes to at least one of receiving a downlink transmission or sending an uplink transmission. The operations of 804 may be performed according to examples as described herein. In some implementations, aspects of the operations of 804 may be described with reference to Figure 1 The device is used to perform the above.

[0103] Fig. 9 A flow chart of a method 900 for supporting OAM data channel configuration according to aspects of the present disclosure is illustrated. The operations of the method 900 may be performed by, for example, a reference Figures 1 to 7 The UE 104 or other devices or components thereof are implemented and executed. In some implementations, the device can execute a set of instructions to control the functional elements of the device to perform the described functions. Additionally or alternatively, the device can use dedicated hardware to perform various aspects of the described functions.

[0104] At 902, the method may include mapping at least one configured OAM mode to a TCI for receiving a downlink transmission and / or sending an uplink transmission. The operations of 902 may be performed according to examples as described herein. In some implementations, aspects of the operations of 902 may be described with reference to Figure 1 The device is used to perform the above.

[0105] At 904, the method may include applying the first configured OAM mode to receive downlink transmissions. The operations of 904 may be performed according to examples as described herein. In some implementations, aspects of the operations of 904 may be described with reference to Figure 1 The device is used to perform the above.

[0106] At 906, the method may include applying the second configured OAM mode to send an uplink transmission. The operations of 906 may be performed according to examples as described herein. In some implementations, aspects of the operations of 906 may be described with reference to Figure 1 The device is used to perform the above.

[0107] Fig.10 1 is a flow chart of a method 1000 for supporting OAM data channel configuration according to aspects of the present disclosure. The operations of the method 1000 may be performed by, for example, a reference Figures 1 to 7 The base station 102 or other devices or components thereof are implemented and executed. In some implementations, the device can execute a set of instructions to control the functional elements of the device to perform the described functions. Additionally or alternatively, the device can use dedicated hardware to perform various aspects of the described functions.

[0108] At 1002, the method may include: sending signaling to the UE, the signaling indicating: at the UE, an OAM multiplexing configuration of one or more configured OAM modes to be applied to receive downlink transmissions and / or send uplink transmissions. The operations of 1002 may be performed according to the examples described herein. In some implementations, aspects of the operations of 1002 may be performed by reference to Figure 1 The device is used to perform the above.

[0109] At 1004, the method may include: receiving an uplink transmission from the UE to which at least one of the one or more configured OAM modes is applied. The operations of 1004 may be performed according to examples as described herein. In some implementations, aspects of the operations of 1004 may be described with reference to Figure 1 The device is used to perform the above.

[0110] It should be noted that the methods described herein describe possible implementations, and the operations and steps may be rearranged or otherwise modified, and other implementations are possible. In addition, aspects from two or more methods may be combined. The order in which the methods are described is not intended to be interpreted as limiting, and any number or combination of the method operations described may be performed in any order of execution method or alternative method.

[0111] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or executed with a general purpose processor, DSP, ASIC, CPU, FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in an alternative, the processor may be any processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in combination with a DSP core, or any other such configuration).

[0112] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or sent via a computer-readable medium as one or more instructions or codes. Other examples and implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hard wiring, or any combination of these. Features that implement the functions may also be physically located in various locations, including being distributed so that portions of the functions are implemented in different physical locations.

[0113] Computer-readable media include both non-transient computer storage media and communication media, and communication media include any medium that facilitates the transfer of computer programs from one place to another. Non-transient storage media can be any available medium that can be accessed by a general or special-purpose computer. As an example and not limitation, non-transient computer-readable media may include: RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disk (CD) ROM or other optical disk storage, disk storage or other magnetic storage device, or can be used to carry or store desired program code devices in the form of instructions or data structures and can be accessed by a general or special-purpose computer, or any other non-transient medium of a general or special-purpose processor.

[0114] Any connection may be appropriately referred to as a computer-readable medium. For example, if the software is sent from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technology (such as infrared, radio, and microwave), the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technology (such as infrared, radio, and microwave) is included in the definition of computer-readable medium. Disks and optical disks as used herein include CDs, laser disks, optical disks, digital versatile disks (DVDs), floppy disks, and blue-ray disks, wherein disks typically reproduce data magnetically, and optical disks reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.

[0115] As used herein, including in the claims, "or" used in a list of items (e.g., a list of items beginning with a phrase such as "at least one of..." or "one or more of...") represents an inclusive list, so that, for example, a list of at least one of A, B, or C represents A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Similarly, a list of one or more of A, B, or C represents A or B or C or AB or AC or BC or ABC (i.e., A and B and C). In addition, as used herein, the phrase "based on" should not be interpreted as a reference to a set of closed conditions. For example, an example step described as "based on condition A" may be based on both condition A and condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "based at least in part on". In addition, as used herein, including in the claims, a "set" may include one or more elements.

[0116] The descriptions described herein in conjunction with the accompanying drawings describe example configurations and do not represent all examples that may be implemented or within the scope of the claims. The term "example" as used herein means "used as an example, instance, or illustration," rather than "preferred" or "better than other examples." The detailed description includes specific details to facilitate understanding of the described techniques. However, these techniques may be practiced without these specific details. In some cases, known structures and devices are shown in block diagram form to avoid confusing the concepts of the described examples.

[0117] The description herein is provided to enable one of ordinary skill in the art to make or use the present disclosure. Various modifications to the present disclosure will be clear to one of ordinary skill in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but should conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device comprising: Transceiver; a processor coupled to the transceiver, the processor and the transceiver being configured to cause the apparatus to: receiving signaling from a base station indicating an orthogonal angular momentum (OAM) multiplexing configuration of one or more configured OAM modes; as well as At least one of the configured OAM patterns is applied to at least one of receiving a downlink transmission or sending an uplink transmission.

2. The apparatus of claim 1, wherein the processor is configured to cause the apparatus to: map the at least one configured OAM mode with at least one transmission configuration indicator (TCI) for receiving at least one of the downlink transmissions or sending the uplink transmissions.

3. The apparatus of claim 1, wherein the processor is configured to cause the apparatus to: apply an OAM mode of a first configuration to the receiving of the downlink transmission, and apply an OAM mode of a second configuration to the sending of the uplink transmission. 4 . The apparatus of claim 1 , wherein the number of the one or more configured OAM modes is indicated by one of downlink control information (DCI) signaling or radio resource control (RRC) signaling.

5. The apparatus according to claim 1, wherein the OAM multiplexing configuration comprises: The number of channel layers mapped to the number of codewords for spatial multiplexing, the number of channel layers for each codeword is at least equal to the number of the one or more configured OAM modes, and the number of channel layers indicates: the number of the one or more configured OAM modes used for at least one of the receiving of the downlink transmission or the sending of the uplink transmission.

6. The apparatus of claim 1, wherein the signaling indicating the OAM multiplexing configuration comprises a mapping matrix that maps a number of channel layers to the one or more configured OAM modes associated with utilizing at least one of spatial multiplexing or a diversity scheme.

7. The apparatus of claim 1, wherein a number of transmission configuration indicator (TCI) states corresponds to a number of the one or more configured OAM modes.

8. The apparatus of claim 1, wherein the number of the one or more configured OAM modes corresponds to a transmission configuration indicator (TCI) state.

9. The apparatus according to claim 1, wherein the signaling indicating the OAM multiplexing configuration comprises: A number of the one or more configured OAM modes associated with a corresponding transmission configuration indicator (TCI) state, the corresponding transmission configuration indicator (TCI) state corresponding to the set of antenna arrays.

10. The apparatus according to claim 1, wherein the signaling indicating the OAM multiplexing configuration comprises: An association of a demodulation reference signal (DM-RS) port with the one or more configured OAM patterns.

11. A method comprising: receiving signaling indicating an orthogonal angular momentum (OAM) multiplexing configuration of one or more configured OAM modes; as well as At least one of the configured OAM patterns is applied to at least one of receiving a downlink transmission or sending an uplink transmission.

12. The method according to claim 11, further comprising: The at least one configured OAM mode is mapped with at least one transmission configuration indicator (TCI) used for at least one of receiving the downlink transmission or sending the uplink transmission.

13. The method according to claim 11, further comprising: applying a first configured OAM mode to said receiving said downlink transmission; as well as Applying a second configured OAM mode to said sending said uplink transmission.

14. The method of claim 11, wherein the number of the one or more configured OAM modes is indicated by one of downlink control information (DCI) signaling or radio resource control (RRC) signaling.

15. The method according to claim 11, wherein the OAM multiplexing configuration comprises: The number of channel layers mapped to the number of codewords for spatial multiplexing, the number of channel layers for each codeword is at least equal to the number of the one or more configured OAM modes, and the number of channel layers indicates: the number of the one or more configured OAM modes used for at least one of the receiving of the downlink transmission or the sending of the uplink transmission.

16. An apparatus comprising: Transceiver; a processor coupled to the transceiver, the processor and the transceiver being configured to cause the apparatus to: sending signaling to a user equipment (UE), the signaling indicating: at the UE, an orthogonal angular momentum (OAM) multiplexing configuration of one or more configured OAM modes to be applied to at least one of receiving a downlink transmission or sending an uplink transmission; as well as The uplink transmission having at least one of the one or more configured OAM patterns applied thereto is received from the UE.

17. The apparatus of claim 16, wherein the signaling is sent to the UE to map the at least one configured OAM mode with at least one transmission configuration indicator (TCI) for receiving the at least one of the downlink transmission or sending the uplink transmission.

18. The apparatus of claim 16, wherein the number of the one or more configured OAM modes is indicated by one of downlink control information (DCI) signaling or radio resource control (RRC) signaling.

19. The apparatus of claim 16, wherein the OAM multiplexing configuration comprises: The number of channel layers mapped to the number of codewords for spatial multiplexing, the number of channel layers for each codeword is at least equal to the number of the one or more configured OAM modes, and the number of channel layers indicates: the number of the one or more configured OAM modes for the UE to receive the downlink transmission or the UE to send the uplink transmission.

20. The apparatus of claim 16, wherein the signaling indicative of the OAM multiplexing configuration comprises a mapping matrix that maps a number of channel layers to the one or more configured OAM modes associated with utilizing at least one of spatial multiplexing or a diversity scheme.

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