Signal-to-noise ratio balancing using singular value combiner pre-decoder matrix

Abstract

Methods, systems, and devices are described for wireless communication using a singular value decomposition (SVD) combiner pre-decoder. The described techniques may enable a network entity to determine which streams of a set of multiple data streams are to be combined in an SVD combiner pre-decoder to increase the lowest signal-to-noise ratio of the set of multiple data streams, and which streams of the multiple streams are to remain separate. The network entity may determine a precoding matrix using the square alpha, which may allow the network entity to dynamically combine (e.g., or not combine) the data streams. The network entity may send an indication to the UE indicating which streams the network entity will combine and which streams the network entity will not combine. The UE may accordingly demodulate the non-combined stream with a relatively less complex demodulator, and may demodulate the combined stream with a relatively more complex demodulator.

Description

Cross-referencing

[0001] This patent application claims priority to U.S. Application No. 18 / 475,039, filed September 26, 2023, entitled “SIGNAL-TO-NOISERATIO BALANCING USING SINGULAR VALUE COMBINER PRECODER MATRICES”, which is assigned to the assignee of this application and is expressly incorporated herein by reference in its entirety. Technical Field

[0002] The following discussion pertains to wireless communication, including signal-to-noise ratio balancing using a singular value decomposition (SVD) combiner pre-decoder matrix. Background Technology

[0003] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, message sending and receiving, broadcasting, and so on. These systems can support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth-generation (4G) systems (such as Long Term Evolution (LTE) systems, LTE-A Advanced (LTE-A) systems, or LTE-A Pro systems) and fifth-generation (5G) systems (which may be referred to as New Radio (NR) systems). These systems may employ technologies such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal FDMA (OFDMA), or Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-S-OFDM). A wireless multiple access communication system may include one or more base stations, each supporting wireless communication of communication devices, which may be referred to as User Equipment (UE). Summary of the Invention

[0004] The described techniques relate to improved methods, systems, apparatuses, and devices for balancing the signal-to-noise ratio (SNR) using a singular value decomposition (SVD) combiner pre-decoder matrix. For example, the described techniques enable a network entity to determine which streams in a set of multiple data streams should be combined to increase the minimum SNR of that set of multiple data streams, and which streams should remain separate. In some cases, the network entity can use a square matrix α to determine the pre-decoder matrix, which allows the network entity to dynamically combine some data streams (e.g., without combining other data streams). The network entity can send an indication to the UE indicating which streams it will combine and which it will not combine. The UE can then demodulate the uncombined streams with a relatively uncomplicated demodulator (e.g., minimum mean square error (MMSE)) and the combined streams with a relatively complex demodulator (e.g., per-stream recursive decoder (PSRD)).

[0005] A method for wireless communication by a UE is described. The method may include: receiving from a network entity information associated with the transmission of a set of multiple data streams at a set of multiple layers, wherein the information includes indications of one or more orthogonal data streams and one or more non-orthogonal data streams in the set of multiple data streams; receiving the set of multiple data streams from the network entity; and demodulating the set of multiple data streams based on the indications.

[0006] A UE for wireless communication is described. The UE may include: one or more memories storing processor-executable code; and one or more processors coupled to the one or more memories. The one or more processors may be able to operate individually or jointly to execute the code so that the UE: receives information from a network entity associated with the transmission of a set of multiple data streams across a set of multiple layers, wherein the information includes indications of one or more orthogonal data streams and one or more non-orthogonal data streams in the set of multiple data streams; receives the set of multiple data streams from the network entity; and demodulates the set of multiple data streams based on the indications.

[0007] Another UE for wireless communication is described. The UE may include: components for receiving from a network entity information associated with the transmission of a set of multiple data streams at a set of multiple layers, wherein the information includes indications of one or more orthogonal data streams and one or more non-orthogonal data streams in the set of multiple data streams; components for receiving the set of multiple data streams from the network entity; and components for demodulating the set of multiple data streams based on the indications.

[0008] A non-transitory computer-readable medium storing code for wireless communication is described. The code may include instructions executable by a processor to: receive information from a network entity associated with the transmission of a plurality of data streams across a plurality of layers, wherein the information includes indications of one or more orthogonal data streams and one or more non-orthogonal data streams in the plurality of data streams; receive the plurality of data streams from the network entity; and demodulate the plurality of data streams based on the indications.

[0009] In some examples of the methods, user equipment (UE), and nontransitory computer-readable media described herein, demodulating the set of multiple data streams may include operations, features, components, or instructions for performing the following actions: using a first demodulator to demodulate the one or more non-orthogonal data streams, and using a second demodulator to demodulate the one or more orthogonal data streams.

[0010] In some examples of the methods, user equipment (UE), and nontransitory computer-readable media described herein, demodulating the set of multiple data streams may include operations, features, components, or instructions for performing the following actions: demodulating the one or more non-orthogonal data streams using a first demodulator with a first number of assumptions, and demodulating the one or more orthogonal data streams using the first demodulator with a second number of assumptions.

[0011] Some examples of the methods, user equipment (UE), and non-transitory computer-readable media described herein may further include operations, features, components, or instructions for performing the following actions: sending a capability message to the network entity that indicates the UE's ability to demodulate one or more non-orthogonal data streams.

[0012] Some examples of the methods, user equipment (UE), and non-transitory computer-readable media described herein may further include operations, features, components, or instructions for performing the following actions: selecting one or more demodulators based on the instruction and one or more capabilities of the UE, wherein the set of multiple data streams may be demodulated using the one or more demodulators.

[0013] Some examples of the methods, user equipment (UE), and non-transitory computer-readable media described herein may further include operations, features, components, or instructions for sending an acknowledgment message to the network entity in response to the information associated with the transmission of the set of multiple data streams.

[0014] In some examples of the methods, user equipment (UE), and non-transitory computer-readable media described herein, the information associated with the transmission of the set of multiple data streams may be received via the physical downlink control channel (PDCCH).

[0015] In some examples of the methods, user equipment (UE), and non-transitory computer-readable media described herein, the information associated with the transmission of the set of multiple data streams may be received via a control message that schedules the set of multiple data streams.

[0016] In some examples of the methods, user equipment (UE), and non-transitory computer-readable media described herein, the set of multiple data streams may be received via the Physical Downlink Shared Channel (PDSCH).

[0017] A method for wireless communication by a network entity is described. The method may include: sending to a UE information associated with the transmission of a set of multiple data streams across a set of multiple layers, wherein the information includes indications of one or more orthogonal data streams and one or more non-orthogonal data streams in the set of multiple data streams, and wherein the set of multiple data streams is pre-decoded according to a pre-decoder including a matrix combining the one or more non-orthogonal data streams; and sending the set of multiple data streams to the UE.

[0018] A network entity for wireless communication is described. The network entity may include: one or more memories storing processor-executable code; and one or more processors coupled to the one or more memories. The one or more processors may be able to operate individually or jointly to execute the code so that the network entity: transmits to a UE information associated with the transmission of a set of multiple data streams across a set of multiple layers, wherein the information includes indications of one or more orthogonal data streams and one or more non-orthogonal data streams in the set of multiple data streams, and wherein the set of multiple data streams is pre-decoded according to a pre-decoder including a matrix combining the one or more non-orthogonal data streams; and transmits the set of multiple data streams to the UE.

[0019] Another network entity for wireless communication is described. This network entity may include: components for transmitting to a UE information associated with the transmission of a set of multiple data streams across a set of multiple layers, wherein the information includes indications of one or more orthogonal data streams and one or more non-orthogonal data streams in the set of multiple data streams, and wherein the set of multiple data streams is pre-decoded according to a pre-decoder including a matrix for combining the one or more non-orthogonal data streams; and components for transmitting the set of multiple data streams to the UE.

[0020] A non-transitory computer-readable medium storing code for wireless communication is described. The code may include instructions executable by a processor to: send to a UE information associated with the transmission of a set of multiple data streams across a set of multiple layers, wherein the information includes indications of one or more orthogonal data streams and one or more non-orthogonal data streams in the set of multiple data streams, and wherein the set of multiple data streams is pre-decoded according to a pre-decoder including a matrix combining the one or more non-orthogonal data streams; and send the set of multiple data streams to the UE.

[0021] The methods, network entities, and some examples of nontransitory computer-readable media described herein may further include operations, features, components, or instructions for performing the following actions: selecting the matrix based on one or more singular values ​​associated with a channel between the network entity and the UE, wherein the set of multiple data streams may be transmitted via the channel.

[0022] In some examples of the methods, network entities, and nontransitory computer-readable media described herein, the matrix may be selected based on the SNR associated with each of the corresponding data streams in the set of multiple data streams.

[0023] In some examples of the methods, network entities, and nontransitory computer-readable media described herein, the matrix may be selected based on one or more power constraints, one or more capabilities of the UE, one or more complexity constraints, or some combination thereof.

[0024] The methods, network entities, and some examples of nontransitory computer-readable media described herein may further include operations, features, components, or instructions for performing the following actions: determining one or more new singular values ​​associated with the channel; and selecting a new matrix based on the one or more new singular values.

[0025] The methods, network entities, and some examples of nontransitory computer-readable media described herein may further include operations, features, components, or instructions for performing the following actions: receiving a capability message from the UE indicating the UE's ability to demodulate one or more non-orthogonal data streams.

[0026] The methods, network entities, and some examples of non-transitory computer-readable media described herein may further include operations, features, components, or instructions for receiving an acknowledgment message from the UE in response to information associated with the transmission of the set of multiple data streams.

[0027] In some examples of the methods, network entities, and nontransitory computer-readable media described herein, the information associated with the transmission of the set of multiple data streams may be transmitted via PDCCH.

[0028] In some examples of the methods, network entities, and nontransitory computer-readable media described herein, the information associated with the transmission of the set of multiple data streams may be transmitted via control messages that schedule the set of multiple data streams.

[0029] In some examples of the methods, network entities, and non-transitory computer-readable media described herein, the set of multiple data streams may be transmitted via PDSCH. Attached Figure Description

[0030] Figure 1 Examples of wireless communication systems supporting signal-to-noise ratio (SNR) balancing using a singular value decomposition (SVD) combiner pre-decoder matrix, according to one or more aspects of this disclosure, are shown.

[0031] Figure 2 An example of an SNR-balanced wireless communication system using an SVD combiner pre-decoder matrix, according to one or more aspects of this disclosure, is shown.

[0032] Figure 3 An example of a process flow for SNR balancing using an SVD combiner pre-decoder matrix is ​​shown, supporting one or more aspects of this disclosure.

[0033] Figure 4 and Figure 5 A block diagram of a device supporting SNR balancing using an SVD combiner pre-decoder matrix, according to one or more aspects of this disclosure, is shown.

[0034] Figure 6 A block diagram of a communication manager supporting SNR balancing using an SVD combiner pre-decoder matrix, according to one or more aspects of this disclosure, is shown.

[0035] Figure 7 A diagram of a system including a device supporting SNR balancing using an SVD combiner pre-decoder matrix is ​​shown, according to one or more aspects of this disclosure.

[0036] Figure 8 and Figure 9 A block diagram of a device supporting SNR balancing using an SVD combiner pre-decoder matrix, according to one or more aspects of this disclosure, is shown.

[0037] Figure 10A block diagram of a communication manager supporting SNR balancing using an SVD combiner pre-decoder matrix, according to one or more aspects of this disclosure, is shown.

[0038] Figure 11 A diagram of a system including a device supporting SNR balancing using an SVD combiner pre-decoder matrix is ​​shown, according to one or more aspects of this disclosure.

[0039] Figures 12 to 16 A flowchart illustrating a method for SNR balancing using an SVD combiner pre-decoder matrix, according to one or more aspects of this disclosure, is shown. Detailed Implementation

[0040] In some wireless communication systems, a network entity may transmit multiple data streams to a user equipment (UE). In some examples, the network entity may pre-decode each stream to increase the signal-to-noise ratio (SNR) of each stream. For example, the network entity may determine a pre-decoder for a channel composed of the strongest singular values ​​of that channel. Such a pre-decoder may be referred to as a singular value decomposition (SVD) pre-decoder. However, in some examples, a first stream pre-decoded using the first strongest singular value may have a much higher SNR than another stream (e.g., a fourth stream) pre-decoded using the fourth strongest singular value. The network entity may use the same modulation and decoding scheme (MCS) for each stream, and this MCS may therefore be limited by the SNR of the weakest stream. Depending on various aspects, the network entity may use a combined pre-decoder that combines some or all of the singular values ​​of the channel (e.g., removing the orthogonality of these singular values) to balance the SNR associated with each data stream, thereby using a relatively high MCS. However, such mixed streams may be more complex to decode for this UE, and therefore non-combined streams can reduce the power consumption and complexity of the UE.

[0041] Therefore, the techniques described herein allow the network entity to determine which of a plurality of streams to combine and which to keep separate. In some cases, the network entity may use a square matrix α to determine the pre-decoding matrix, which allows the network entity to dynamically combine some data streams (e.g., without combining other data streams). The network entity may send an indication to the UE of which streams it will combine and which it will not combine. The UE may accordingly demodulate the uncombined streams with a relatively uncomplicated demodulator (e.g., minimum mean square error (MMSE)) and the combined streams with a relatively complex demodulator (e.g., per-stream recursive decoder (PSRD)).

[0042] The aspects of this disclosure are first described in the context of a wireless communication system. The aspects of this disclosure are further described with reference to process flowcharts. The aspects of this disclosure are further illustrated and described with reference to apparatus diagrams, system diagrams, and flowcharts relating to SNR balancing using a singular value combiner pre-decoder matrix.

[0043] Figure 1 An example of a wireless communication system 100 supporting SNR balancing using a singular value combiner pre-decoder matrix according to one or more aspects of this disclosure is shown. The wireless communication system 100 may include one or more network entities 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a Long Term Evolution (LTE) network, an Advanced LTE (LTE-A) network, an LTE-A Pro network, a New Radio (NR) network, or a network operating under other systems and radio technologies including future systems and radio technologies not explicitly mentioned herein.

[0044] Network entity 105 may be distributed across a geographical area to form wireless communication system 100, and may include devices employing different forms or having different capabilities. In various examples, network entity 105 may be referred to as a network element, mobility element, radio access network (RAN) node, or network equipment, etc. In some examples, network entity 105 and UE 115 may wirelessly communicate via one or more communication links 125 (e.g., radio frequency (RF) access links). For example, network entity 105 may support coverage area 110 (e.g., a geographical coverage area) within which UE 115 and network entity 105 may establish one or more communication links 125. Coverage area 110 may be an example of a geographical area within which network entity 105 and UE 115 may support the transmission of signals according to one or more radio access technologies (RATs).

[0045] UE 115 can be distributed throughout the coverage area 110 of wireless communication system 100, and each UE 115 can be stationary or mobile, or stationary and mobile at different times. UE 115 can be devices in different forms or with different capabilities. Figure 1 Some example UE 115s are illustrated herein. The UE 115 described herein can be able to support various types of devices (such as, e.g., ...). Figure 1 It communicates with other UEs (115 or network entity 105) as shown.

[0046] As described herein, nodes of the wireless communication system 100 (which may be referred to as network nodes or wireless nodes) may be network entity 105 (e.g., any network entity described herein), UE 115 (e.g., any UE described herein), network controller, apparatus, device, computing system, one or more components, or another suitable processing entity configured to perform any of the techniques described herein. For example, a node may be UE 115. Alternatively, a node may be network entity 105. Furthermore, a first node may be configured to communicate with a second or third node. In one aspect of this example, the first node may be UE 115, the second node may be network entity 105, and the third node may be UE 115. In another aspect of this example, the first node may be UE 115, the second node may be network entity 105, and the third node may be network entity 105. In other aspects of this example, the first node, the second node, and the third node may be different from these examples. Similarly, references to UE 115, network entity 105, device, equipment, computing system, etc., may include disclosures of UE 115, network entity 105, device, equipment, computing system, etc., as nodes. For example, a disclosure that UE 115 is configured to receive information from network entity 105 also discloses that a first node is configured to receive information from a second node.

[0047] In some examples, network entity 105 may communicate with core network 130, communicate with each other, or both. For example, network entity 105 may communicate with core network 130 via one or more backhaul communication links 120 (e.g., according to S1, N2, N3, or other interface protocols). In some examples, network entities 105 may communicate with each other directly (e.g., directly between network entities 105) or indirectly (e.g., via core network 130) via backhaul communication links 120 (e.g., according to X2, Xn, or other interface protocols). In some examples, network entities 105 may communicate with each other via midhaul communication link 162 (e.g., according to midhaul interface protocol) or fronthaul communication link 168 (e.g., according to fronthaul interface protocol) or any combination thereof. Backhaul communication link 120, midhaul communication link 162, or fronthaul communication link 168 may be or include one or more wired links (e.g., electrical links, fiber optic links), one or more wireless links (e.g., radio links, wireless optical links), etc., or various combinations thereof. UE 115 can communicate with core network 130 via communication link 155.

[0048] One or more network entities in network entity 105 described herein may include or be referred to as base station 140 (e.g., transceiver base station, radio base station, NR base station, access point, radio transceiver, node B, eNodeB (eNB), next-generation node B or gigabit node B (any of which may be referred to as gNB), 5G NB, next-generation eNB (ng-eNB), home node B, home evolution node B, or other suitable terms). In some examples, network entity 105 (e.g., base station 140) may be implemented in an aggregated (e.g., monolithic, standalone) base station architecture that may be configured to utilize a protocol stack that is physically or logically integrated within a single network entity 105 (e.g., a single RAN node, such as base station 140).

[0049] In some examples, network entity 105 may be implemented in a decomposed architecture (e.g., a decomposed base station architecture, a decomposed RAN architecture) that can be configured to utilize protocol stacks physically or logically distributed across two or more network entities 105, such as an Integrated Access Backhaul (IAB) network, an Open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance), or a Virtualized RAN (vRAN) (e.g., a Cloud RAN (C-RAN)). For example, network entity 105 may include one or more of the following: a Central Unit (CU) 160, a Distributed Unit (DU) 165, a Radio Unit (RU) 170, a RAN Intelligent Controller (RIC) 175 (e.g., a near-real-time RIC, a non-real-time RIC), a Service Management and Orchestration (SMO) 180 system, or any combination thereof. 170 may also be referred to as a radio headend, intelligent radio headend, remote radio headend (RRH), remote radio unit (RRU), or transmit / receive point (TRP). One or more components of network entity 105 in a decomposed RAN architecture may be co-located, or one or more components of network entity 105 may be located in distributed locations (e.g., separate physical locations). In some examples, one or more network entities 105 in a decomposed RAN architecture may be implemented as virtual units (e.g., virtual CU (VCU), virtual DU (VDU), virtual RU (VRU)).

[0050] The functional splitting among CU 160, DU 165, and RU 170 is flexible and can support different functionalities depending on which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, and any combination thereof) are performed at CU 160, DU 165, or RU 170. For example, a protocol stack functional splitting can be used between CU 160 and DU 165, allowing CU 160 to support one or more layers of the protocol stack, and DU 165 to support one or more different layers of the protocol stack. In some examples, CU 160 can host higher protocol layer (e.g., Layer 3 (L3), Layer 2 (L2)) functionalities and signaling (e.g., Radio Resource Control (RRC), Serving Data Adaptation Protocol (SDAP), Packet Data Convergence Protocol (PDCP)). CU 160 can connect to one or more DU 165 or RU 170, and one or more DU 165 or RU 170 can host lower protocol layers, such as Layer 1 (L1) (e.g., Physical (PHY) layer) or L2 (e.g., Radio Link Control (RLC) layer, Medium Access Control (MAC) layer) functionality and signaling, and each can be at least partially controlled by CU 160. Additionally or alternatively, a protocol stack functional split can be employed between DU 165 and RU 170, such that DU 165 can support one or more layers of the protocol stack, and RU 170 can support one or more different layers of the protocol stack. DU 165 can support one or more different cells (e.g., via one or more RU 170). In some cases, functional decomposition between CU 160 and DU 165, or between DU 165 and RU 170, can be performed within the protocol layer (e.g., some functions of the protocol layer can be performed by one of CU 160, DU 165, or RU 170, while other functions of the protocol layer can be performed by different of CU 160, DU 165, or RU 170). CU 160 can be further functionally decomposed into CU control plane (CU-CP) functions and CU user plane (CU-UP) functions. CU 160 can be connected to one or more DU 165 via midhaul communication link 162 (e.g., F1, F1-c, F1-u), and DU 165 can be connected to one or more RU 170 via fronthaul communication link 168 (e.g., open fronthaul (FH) interface). In some examples, the midhaul communication link 162 or the fronthaul communication link 168 may be implemented based on the interfaces (e.g., channels) between the layers of the protocol stack, which are supported by the corresponding network entities 105 communicating via such communication links.

[0051] In a wireless communication system (e.g., wireless communication system 100), the infrastructure and spectrum resources for radio access can support wireless backhaul link capabilities to supplement wired backhaul connections, thereby providing an IAB network architecture (e.g., to core network 130). In some cases, in an IAB network, one or more network entities 105 (e.g., IAB node 104) may be partially controlled by each other. One or more IAB nodes 104 may be referred to as donor entities or IAB donors. One or more DU 165s or one or more RU 170s may be partially controlled by one or more CU 160s associated with donor network entity 105 (e.g., donor base station 140). One or more donor network entities 105 (e.g., IAB donors) may communicate with one or more additional network entities 105 (e.g., IAB node 104) via supported access and backhaul links (e.g., backhaul communication link 120). IAB node 104 may include an IAB mobile terminal (IAB-MT) controlled (e.g., scheduled) by a DU 165 of a coupled IAB donor. The IAB-MT may include a separate set of antennas for relaying communication with UE 115, or may share the same antennas (e.g., those of RU 170) for access to IAB node 104 via DU 165 of IAB node 104. (e.g., referred to as a virtual IAB-MT (vIAB-MT)). In some examples, IAB node 104 may include a DU 165 that supports communication links with additional entities (e.g., IAB node 104, UE 115) within a relay chain or configuration (e.g., downstream) of the access network. In such cases, one or more components of the decomposed RAN architecture (e.g., one or more IAB nodes 104 or components of IAB node 104) may be configured to operate according to the techniques described herein.

[0052] When the techniques described herein are applied in the context of a decomposed RAN architecture, one or more components of the decomposed RAN architecture can be configured to support SNR balancing using a singular value combiner pre-decoder matrix as described herein. For example, some operations described as being performed by UE 115 or network entity 105 (e.g., base station 140) may additionally or alternatively be performed by one or more components of the decomposed RAN architecture (e.g., IAB node 104, DU 165, CU 160, RU 170, RIC 175, SMO 180).

[0053] UE 115 may include or be referred to as a mobile device, wireless device, remote device, handheld device, or subscriber device, or any other suitable term, wherein "device" may also be referred to as a cell, station, terminal, or client, etc. UE 115 may also include or be referred to as a personal electronic device, such as a cellular phone, personal digital assistant (PDA), tablet computer, laptop computer, or personal computer. In some examples, UE 115 may include or be referred to as a wireless local loop (WLL) station, Internet of Things (IoT) device, Internet of Everything (IoE) device, or machine-type communication (MTC) device, etc., which may be implemented in various objects such as appliances or vehicles, meters, etc.

[0054] The UE 115 described herein can communicate with various types of devices, such as other UEs 115 that sometimes act as relays, network entities 105, and network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, etc. Figure 1 As shown.

[0055] UE 115 and network entity 105 can wirelessly communicate with each other via one or more communication links 125 (e.g., access links) using resources associated with one or more carriers. The term "carrier" can refer to a set of RF spectrum resources having a defined physical layer structure for supporting communication link 125. For example, a carrier for communication link 125 may include a portion of the RF spectrum band (e.g., a bandwidth portion (BWP)) operating according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling coordinating carrier operation, user data, or other signaling. Wireless communication system 100 can support communication with UE 115 using carrier aggregation or multi-carrier operation. Depending on the carrier aggregation configuration, UE 115 can be configured using multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation can be used in conjunction with both frequency division duplex (FDD) component carriers and time division duplex (TDD) component carriers. Communication between network entity 105 and other devices can refer to communication between these devices and any part of network entity 105 (e.g., entity, sub-entity). For example, the terms “send,” “receive,” or “communicate” when referring to network entity 105 can refer to any part of the RAN’s network entity 105 (e.g., base station 140, CU160, DU 165, RU 170) communicating with another device (e.g., directly or via one or more other network entities 105).

[0056] In some examples, such as in carrier aggregation configurations, a carrier may also have acquisition signaling or control signaling to coordinate the operation of other carriers. A carrier may be associated with a frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute RF Channel Number (EARFCN)) and may be identified according to a channel grating used for discovery by UE 115. A carrier may operate in standalone mode, in which case initial acquisition and connection can be performed by UE 115 via that carrier, or the carrier may operate in non-standalone mode, in which case different carriers (e.g., the same or different radio access technologies) are used to anchor the connection.

[0057] The communication link 125 shown in the wireless communication system 100 may include downlink transmission (e.g., forward link transmission) from network entity 105 to UE 115, uplink transmission (e.g., return link transmission) from UE 115 to network entity 105, or both, as well as other transmission configurations. A carrier may carry downlink communication or uplink communication (e.g., in FDD mode), or may be configured to carry both downlink and uplink communication (e.g., in TDD mode).

[0058] A carrier may be associated with a specific bandwidth of the RF spectrum, and in some examples, the carrier bandwidth may be referred to as the carrier or the “system bandwidth” of the wireless communication system 100. For example, the carrier bandwidth may be one bandwidth in a set of bandwidths for a particular radio access technology (e.g., 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz, 20 MHz, 40 MHz, or 80 MHz). Devices of the wireless communication system 100 (e.g., network entity 105, UE 115, or both) may have hardware configurations that support communication using a specific carrier bandwidth, or may be configured to support communication using one carrier bandwidth in a set of carrier bandwidths. In some examples, the wireless communication system 100 may include network entity 105 or UE 115 that supports concurrent communication using carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate using a portion (e.g., subband, BWP) or all of the carrier bandwidth.

[0059] The signal waveform transmitted via a carrier may include multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques, such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform extended OFDM (DFT-S-OFDM)). In a system employing MCM, a resource element may refer to a resource of one symbol period (e.g., the duration of one modulation symbol) and one subcarrier, in which case the symbol period and subcarrier spacing may be inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the decoding rate of the modulation scheme, or both), such that a relatively high number of resource elements (e.g., in the transmission duration) and a relatively high modulation scheme order correspond to a relatively high communication rate. Wireless communication resources may refer to a combination of RF spectrum resources, temporal resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial resources may increase the data rate or data integrity used for communication with UE 115.

[0060] It can support one or more sets of parameters for a carrier, and the set of parameters may include subcarrier spacing ( (and cyclic prefix). A carrier can be divided into one or more BWPs with the same or different sets of parameters. In some examples, multiple BWPs can be used to configure UE 115. In some examples, a single BWP of a carrier can be active at a given time, and the communication of UE 115 can be constrained to one or more active BWPs.

[0061] The time interval for network entity 105 or UE 115 can be expressed as a multiple of a basic time unit, such as the sampling period. seconds, of which It can represent the supported subcarrier spacing, and This can represent the supported Discrete Fourier Transform (DFT) size. The time interval of the communication resources can be organized according to radio frames, each with a specified duration (e.g., 10 milliseconds (ms)). Each radio frame can be identified by a System Frame Number (SFN) (e.g., ranging from 0 to 1023).

[0062] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, a frame may (e.g., in the time domain) be divided into subframes, and each subframe may be further divided into a number of time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include a number of symbol periods (e.g., depending on the length of the cyclic prefix appended to each symbol period). In some wireless communication systems 100, time slots may be further divided into multiple micro-time slots associated with one or more symbols. Excluding the cyclic prefix, each symbol period may be associated with one or more (e.g., The duration of a symbol period is associated with a (number) sampling period. The duration of a symbol period can depend on the subcarrier spacing or the operating frequency band.

[0063] A subframe, time slot, micro-time slot, or symbol can be the smallest scheduling unit of the wireless communication system 100 (e.g., in the time domain) and can be referred to as a transmission time interval (TTI). In some examples, the duration of the TTI (e.g., the number of symbol periods in the TTI) can be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 can be dynamically selected (e.g., in a burst of shortened TTIs (sTTIs)).

[0064] Depending on the technology, carriers can be used to multiplex physical channels for communication. For example, one or more of Time Division Multiplexing (TDM), Frequency Division Multiplexing (FDM), or hybrid TDM-FDM techniques can be used to multiplex physical control channels and physical data channels for signaling via a downlink carrier. The control region (e.g., control resource set (CORESET)) of the physical control channel may be defined by a set of symbol periods and may extend across the system bandwidth of the carrier or a subset of that bandwidth. One or more control regions (e.g., CORESET) can be configured for a set of UEs 115. For example, one or more UEs in UE 115 may monitor or search for control regions to obtain control information based on one or more search space sets, and each search space set may include one or more control channel candidates in one or more aggregation levels arranged in a concatenated manner. The aggregation level of control channel candidates may refer to the amount of control channel resources (e.g., control channel elements (CCEs)) associated with coded information for a control information format having a given payload size. The search space set may include: a common search space set configured to transmit control information to multiple UEs 115, and a UE-specific search space set used to transmit control information to a specific UE 115.

[0065] In some examples, network entity 105 (e.g., base station 140, RU 170) may be mobile, and thus provide communication coverage to mobile coverage areas 110. In some examples, different coverage areas 110 associated with different technologies may overlap, but the different coverage areas 110 may be supported by the same network entity 105. In some other examples, overlapping coverage areas 110 associated with different technologies may be supported by different network entities 105. The wireless communication system 100 may include, for example, a heterogeneous network in which different types of network entities 105 use the same or different radio access technologies to provide coverage for various coverage areas 110.

[0066] Wireless communication system 100 may be configured to support ultra-reliable communication or low-latency communication, or various combinations thereof. For example, wireless communication system 100 may be configured to support ultra-reliable low-latency communication (URLLC). UE 115 may be designed to support ultra-reliable or low-latency or critical functions. Ultra-reliable communication may include private or group communication and may be supported by one or more services, such as push-to-talk, video, or data. Support for ultra-reliable, low-latency functions may include prioritization of services, and such services may be used for public safety or general business applications. The terms “ultra-reliable,” “low-latency,” and “ultra-reliable low-latency” are used interchangeably herein.

[0067] In some examples, UE 115 may be configured to support direct communication with other UE 115s via device-to-device (D2D) communication link 135 (e.g., according to peer-to-peer (P2P), D2D, or sidelink protocols). In some examples, one or more UE 115s performing D2D communication in a group may be within the coverage area 110 of network entity 105 (e.g., base station 140, RU 170), which may support aspects of such D2D communication configured (e.g., scheduled by network entity 105). In some examples, one or more UE 115s in such a group may be outside the coverage area 110 of network entity 105, or may otherwise be unable or not configured to receive transmissions from network entity 105. In some examples, the group of UE 115s communicating via D2D communication may support a one-to-many (1:M) system, where each UE 115 transmits to each of the other UE 115s in the group. In some examples, network entity 105 may facilitate the scheduling of resources used for D2D communication. In other examples, D2D communication may be performed between UEs 115 without involving network entity 105.

[0068] Core network 130 provides user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. Core network 130 can be an evolved packet core (EPC) or a 5G core (5GC), which may include at least one control plane entity (e.g., a Mobility Management Entity (MME), Access and Mobility Management Function (AMF)) for managing access and mobility, and at least one user plane entity (e.g., a Serving Gateway (S-GW), Packet Data Network (PDN) Gateway (P-GW), or User Plane Function (UPF)) for routing packets or interconnecting to external networks. The control plane entity manages non-access stratum (NAS) functions, such as mobility, authentication, and bearer management of UE 115 served by network entity 105 (e.g., base station 140) associated with core network 130. User IP packets can be delivered through the user plane entity, which provides IP address allocation and other functions. The user plane entity may connect to one or more network operator IP services 150. IP services 150 may include access to the Internet, intranets, IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0069] Wireless communication system 100 can operate using one or more frequency bands in the range of 300 MHz to 300 GHz. Generally, the area from 300 MHz to 3 GHz is referred to as the Ultra High Frequency (UHF) band or decimeter band because the wavelength range is approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features (which may be referred to as clusters), but these waves are sufficient to penetrate structures so that macrocells can provide service to UE 115 located indoors. Compared to communication using smaller frequencies and longer wavelengths in the lower frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz, communication using UHF waves can be associated with smaller antennas and shorter ranges (e.g., less than 100 km).

[0070] Wireless communication system 100 may utilize both licensed and unlicensed RF spectrum bands. For example, wireless communication system 100 may use unlicensed bands (such as the 5 GHz Industrial, Scientific, and Medical (ISM) band) to employ Licensed Assisted Access (LAA), LTE Unlicensed (LTE-U) radio access technology, or NR technology. When operating with unlicensed RF spectrum, devices such as network entity 105 and UE 115 may employ carrier sensing for collision detection and avoidance. In some examples, operation using unlicensed bands may be combined with component carriers operating with licensed bands based on carrier aggregation configurations (e.g., LAA). Operation using unlicensed spectrum may include downlink transmission, uplink transmission, P2P transmission, or D2D transmission, etc.

[0071] Network entity 105 (e.g., base station 140, RU 170) or UE 115 may be equipped with multiple antennas that can be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communication, or beamforming. The antennas of network entity 105 or UE 115 may be located within one or more antenna arrays or antenna panels, which can support MIMO operation or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly (such as an antenna tower). In some examples, the antennas or antenna arrays associated with network entity 105 may be located at different geographical locations. Network entity 105 may include an antenna array having a collection of multiple rows and columns of antenna ports that network entity 105 can use to support beamforming for communication with UE 115. Similarly, UE 115 may include one or more antenna arrays that can support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support RF beamforming for signals transmitted via the antenna ports.

[0072] Network entity 105 or UE 115 may use MIMO communication to leverage multipath signal propagation and improve spectral efficiency by transmitting or receiving multiple signals via different spatial layers. This technique may be referred to as spatial multiplexing. The multiple signals may be transmitted, for example, by a transmitting device via different antennas or different combinations of antennas. Similarly, the multiple signals may be received by a receiving device via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry information associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers may be associated with different antenna ports used for channel measurement and reporting. MIMO techniques include: single-user MIMO (SU-MIMO), for which multiple spatial layers are transmitted to the same receiving device; and multi-user MIMO (MU-MIMO), for which multiple spatial layers are transmitted to multiple devices.

[0073] Beamforming (also known as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used at a transmitting or receiving device (e.g., network entity 105, UE 115) to shape or guide an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting and receiving devices. Beamforming can be achieved by combining signals transmitted via antenna elements of an antenna array such that some signals propagating along a specific orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to the signals transmitted via the antenna elements may include applying amplitude shifts, phase shifts, or both to the signals carried via the antenna elements associated with the device. The adjustments associated with each of these antenna elements may be defined by a beamforming weight set associated with a specific orientation (e.g., relative to the antenna array of the transmitting or receiving device or relative to some other orientation).

[0074] Network entity 105 or UE 115 may use beam scanning technology as part of beamforming operations. For example, network entity 105 (e.g., base station 140, RU 170) may use multiple antennas or antenna arrays (e.g., antenna panels) to perform beamforming operations for directional communication with UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted multiple times by network entity 105 in different directions. For example, network entity 105 may transmit signals according to different beamforming weight sets associated with different transmission directions. Transmission along different beam directions may be used to identify (e.g., by a transmitting device (such as network entity 105) or by a receiving device (such as UE 115)) the beam direction for later transmission or reception by network entity 105.

[0075] Some signals (such as data signals associated with a specific receiving device) may be transmitted by a transmitting device (e.g., transmitting network entity 105, transmitting UE 115) along a single beam direction (e.g., the direction associated with a receiving device (such as receiving network entity 105 or receiving UE 115). In some examples, the beam direction associated with transmission along a single beam direction may be determined based on the signals transmitted along one or more beam directions. For example, UE 115 may receive one or more signals transmitted by network entity 105 in different directions and may report to network entity 105 an indication of signals received by UE 115 with the highest signal quality or other acceptable signal quality.

[0076] In some examples, transmissions performed by a device (e.g., by network entity 105 or UE 115) may be performed using multiple beam directions, and the device may use a combination of digital pre-decoding or beamforming to generate combined beams for transmission (e.g., from network entity 105 to UE 115). UE 115 may report feedback indicating pre-decoding weights for one or more beam directions, and this feedback may correspond to a set of beams configured across the system bandwidth or one or more sub-bands. Network entity 105 may transmit reference signals (e.g., cell-specific reference signals (CRS), channel state information reference signals (CSI-RS)) that may or may not be pre-decoded. UE 115 may provide feedback for beam selection, which may be a pre-decoding matrix indicator (PMI) or codebook-based feedback (e.g., multi-panel codebook, linear combination codebook, port selection codebook). Although these techniques are described with reference to signals transmitted by network entity 105 (e.g., base station 140, RU 170) in one or more directions, UE 115 may use similar techniques to transmit signals multiple times in different directions (e.g., to identify the beam direction used by UE 115 for subsequent transmission or reception), or to transmit signals in a single direction (e.g., to transmit data to a receiving device).

[0077] A receiving device (e.g., UE 115) may perform reception operations according to multiple reception configurations (e.g., directional listening) when receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from a transmitting device (e.g., network entity 105). For example, the receiving device may perform reception according to multiple reception directions by: receiving via different antenna subarrays; processing the received signal according to different antenna subarrays; receiving according to different sets of reception beamforming weights applied to signals received at multiple antenna elements of the antenna array (e.g., different directional listening weight sets); or processing the received signal according to different sets of reception beamforming weights applied to signals received at multiple antenna elements of the antenna array. Any of these operations may be referred to as “listening” according to different reception configurations or reception directions. In some examples, the receiving device may use a single reception configuration to receive along a single beam direction (e.g., when a data signal is received). The single receiver configuration can be aligned along a beam direction determined based on listening according to different receiver configuration directions (e.g., based on the beam direction determined to have the highest signal strength, highest SNR, or other acceptable signal quality based on listening to multiple beam directions).

[0078] The wireless communication system 100 can be a packet-based network operating according to a layered protocol stack. In the user plane, communication at the bearer or PDCP layer can be IP-based. The RLC layer can perform packet segmentation and reassembly for transmission via logical channels. The MAC layer can perform priority handling and multiplexing of logical channels to transport channels. The MAC layer can also use error detection, error correction, or both to support retransmission to improve link efficiency. In the control plane, the RRC layer can provide the establishment, configuration, and maintenance of RRC connections between the UE 115 and network entity 105 or core network 130 that support user plane data radio bearers. The PHY layer can map transport channels to physical channels.

[0079] UE 115 and network entity 105 can support data retransmission to increase the likelihood of successful data reception. Hybrid Automatic Repeat Request (HARQ) feedback is a technique used to increase the likelihood of correctly receiving data via communication links (e.g., communication link 125, D2D communication link 135). HARQ may include a combination of error detection (e.g., using Cyclic Redundancy Check (CRC)), forward error correction (FEC), and retransmission (e.g., Automatic Repeat Request (ARQ)). HARQ can improve throughput at the MAC layer under poor radio conditions (e.g., low signal-to-noise ratio conditions). In some examples, the device may support same-slot HARQ feedback, in which case the device can provide HARQ feedback in a specific time slot for data received via a previous symbol in that time slot. In some other examples, the device may provide HARQ feedback in subsequent time slots or according to a different time interval.

[0080] The techniques described herein allow network entity 105 to determine which of a set of multiple data streams to combine and which of those streams not to combine (e.g., to remain separate). In some cases, network entity 105 may use a square matrix α to determine the pre-decoding matrix, which allows network entity 105 to dynamically combine one or more data streams (e.g., and not combine other data streams). Network entity 105 may send an indication to UE 115 of which streams it will combine and which it will not combine. UE 115 may accordingly demodulate the uncombined streams using a relatively simple demodulator (e.g., an MMSE-based demodulator) and the combined streams using a relatively complex demodulator (e.g., a PSRD-based demodulator).

[0081] Figure 2An example of a wireless communication system 200 supporting SNR balancing using an SVD combiner pre-decoder matrix, according to one or more aspects of this disclosure, is shown. Wireless communication system 200 may implement, or be implemented by, aspects of wireless communication system 100. For example, wireless communication system 200 may include UE 115 (e.g., UE 115-b) and network entity 105 (e.g., network entity 105-b), which may be as described in reference... Figure 1 Examples of the corresponding devices described.

[0082] In some wireless communication systems, as part of MIMO communication, network entity 105-a may send one or more data streams 220 to UE 115-a. Network entity 105-a may utilize SVD pre-decoding to pre-decode one or more data streams 220 to increase (e.g., maximize) the corresponding SNR associated with each data stream 220. Network entity 105-a may also utilize vector... (For example, stream vector) and pre-decoder vector (For example, a vector consisting of one or more singular values ​​of a channel (such as downlink channel 210)) multiplied. Therefore, each of the one or more data streams 220 can have a different SNR. The SNR of data stream 220 can be defined according to Equation 1.

[0083] As described in Equation 1, It can be the channel's first The strongest singularity, It could be the power of the signal (e.g., the first...) (220 transmit power for each data stream), and It can be the power of noise associated with the channel.

[0084] Therefore, each of the one or more data streams 220 may have a different channel capacity. Thus, network entity 105-a may have different MCS constraints associated with modulating each corresponding data stream 220. To increase (e.g., maximize) throughput, network entity 105-a may utilize different MCSs to modulate each data stream 220 based on each corresponding MCS constraint (e.g., based on each SNR or channel capacity). However, in some examples, network entity 105-a may have a finite number of transport blocks, and therefore may also have a finite number of MCSs that network entity 105-a can apply to the data streams 220. Network entity 105-a can therefore use the same (e.g., a single fixed) MCS to modulate all data streams 220 of the multiple data streams 220. Therefore, network entity 105-a can use the MCS determined by the weakest data stream 220 (e.g., the data stream 220 associated with the weakest singular value, such as data stream 220-d) to modulate each data stream 220. For example, network entity 105-a may pre-decode data streams 220-a, 220-b, 220-c, and 220-d. As illustrated with reference to SNR diagram 225-a, data stream 220-d may have an SNR below the SNR threshold 230, which may result in a finite MCS for all data streams 220.

[0085] In such examples, network entity 105-a can use the first strongest channel. A singular value SVD pre-decoder, where This can be defined as the number of data streams (220). Pre-decoder It can be defined as , where the channel SVD can be defined as ,in It can be a frequency index of the data stream. It can be a left singular value. It can be a characteristic value of the channel, and This could be the right singularity of the channel. After receiving data stream 220, UE 115-a can observe the signal. Multiply by the left singular value This can produce the observation signal defined by Equation 2. .

[0086] As described in Equation 2, The dimension of the observed signal can be defined as (N) Rx A matrix of (e.g., the matrix could have a dimension of 1 times the number of receive antennas of UE 115-a). The channel dimension can be defined as (N) Rx N Tx The matrix (e.g., the matrix may have a dimension of the number of receive antennas multiplied by the number of transmit antennas of network entity 105-a), The dimension of the pre-decoder can be defined as (N) ss, N Tx ) matrix, It can be defined that the dimension of the sent data stream 220 is (N) ss, 1) matrix, and The dimension of additive noise can be defined as (N) Rx The matrix of , 1).

[0087] The techniques described herein enable network entity 105-a to increase the minimum SNR and utilize MCS constraints associated with multiple data streams 220. For example, network entity 105-a can apply an SVD combiner pre-decoder matrix α to pre-decode multiple data streams 220. The SVD combiner pre-decoder matrix can combine the data streams 220 (e.g., such that at least some of the data streams 220 are non-orthogonal) and can balance or average the SNR of the data streams 220. For example, as illustrated with reference to SNR diagram 225-b, network entity 105-a can utilize the SVD combiner pre-decoder matrix to pre-decode each data stream 220, which balances (e.g., averages) the SNR associated with each data stream 220. The minimum SNR of the data streams 220 can be correspondingly greater than the SNR threshold 230, which increases the MCS that network entity 105-a can use to modulate the data streams 220. The SVD combiner pre-decoder used by network entity 105-a can be defined as , where the matrix The entries in rows m and columns n can be defined according to Equation 3.

[0088] in This could be the number of receiving antennas at UE 115-a.

[0089] However, the combined or non-orthogonal data streams 220 may be mixed at the receiver of UE 115-a (e.g., as opposed to the non-combined or orthogonal data streams 220 that may be separated at UE 115-a). Therefore, demodulating the combined or non-orthogonal data streams 220 may increase the complexity of UE 115-a (e.g., compared to demodulating the non-combined or orthogonal data streams 220).

[0090] Therefore, network entity 105-a can apply different SVD combiner pre-decoder matrices α. Network entity 105-a can apply a pre-decoder matrix that can combine some data streams in data stream 220 (e.g., data stream 220-a and data stream 220-d), and may not combine some data streams in data stream 220 (e.g., data stream 220-b and data stream 220-c). Therefore, if the corresponding SNR should be balanced (e.g., to achieve SNR threshold 230), network entity 105-a can combine or mix data streams 220. As an illustrative example, network entity 105-a can determine the singular values ​​of the channel as... dB. In such an example, network entity 105-a may determine to balance the first and fourth singular values ​​(e.g., with a 14 dB gap) and not combine (e.g., keep them unmixed) the second or third singular values. Network entity 105-a may accordingly select a matrix. (For example, the dimension is () This matrix can combine, for example, a first data stream and a fourth data stream 220. Such a matrix can be defined as... .

[0091] In some examples, network entity 105-a can choose different matrices. To combine one or more different data streams 220 and not combine one or more other data streams 220. The selected matrix. The transmission power of data stream 220 can be maintained and orthogonal columns can be used. Network entity 105-a can dynamically balance the SNR of each data stream 220 accordingly to obtain the subspace of the strongest singular values.

[0092] Network entity 105-a can select a matrix based on the singular values ​​of the channel. Network entity 105-a may determine the singular value based on, for example, reciprocity or feedback from UE 115-a (e.g., on uplink channel 205). Network entity 105-a may select the matrix based on criteria such as balancing the SNR of each data stream 220, separating data streams 220 (e.g., to reduce demodulation complexity), or other system limitations or constraints (complexity, power constraints, etc.). In some examples, network entity 105-a may receive a capability message from UE 115-a indicating UE 115-a's ability to demodulate non-orthogonal data stream 220, and network entity 105-a may select a matrix based on this capability message. .

[0093] In some examples, the channel may change over time. In such examples, network entity 105-a may receive or determine one or more new singular values ​​and may select a new matrix. Update the SVD combiner predecoder at (for example, at the same rate as updating the non-combiner SVD predecoder).

[0094] Network entity 105-a may send an orthogonality indication 215 to UE 115-a, which indicates which data streams 220 of the multiple data streams 220 will be combined (e.g., and which data streams 220 will not be combined). Indication 215 may be, for example, an array of 0s and 1s, such as (1, 0, 0, 1), to indicate that data streams 220-a and 220-d may be combined, and data streams 220-b and 220-c may not be combined (e.g., or vice versa). Indication 215 may be sent, for example, via physical-level signaling in the physical downlink control channel (PDCCH) (e.g., when network entity 105-a selects a new matrix). (Or, via the scheduling or authorization PDCCH of scheduling data stream 220). In some examples, UE 115-a may send an acknowledgment message in response to receiving instruction 215 (e.g., via uplink channel 205).

[0095] UE 115-a may receive data stream 220 via downlink channel 210 (e.g., Physical Downlink Shared Channel (PDSCH)). UE 115-a may demodulate data stream 220 accordingly based on indication 215. In some cases, UE 115-a may demodulate combined data stream 220 differently from non-combined data stream 220 (e.g., to reduce processing and complexity). For example, to demodulate orthogonal (e.g., non-combined) data stream 220, UE 115-a may treat data stream 220 as separate parallel single-input single-output (SISO) streams. UE 115-a may use an MMSE demodulator to demodulate orthogonal data stream 220, which may have noise enhancement for MIMO streams rather than for SISO streams. To demodulate non-orthogonal (e.g., combined) data stream 220, UE 115-a may use a demodulator without noise enhancement for MIMO streams, such as a PSRD demodulator.

[0096] In some examples, UE 115-a may use a more complex (e.g., more intelligent) demodulator, such as a PSRD demodulator, for both orthogonal and non-orthogonal data streams 220. UE 115-a may use the PSRD demodulator for the non-orthogonal data stream 220 with a first number of assumptions, and may use the PSRD demodulator for the orthogonal data stream 220 with a second number (e.g., fewer) of assumptions. Therefore, network entity 105-a may utilize a relatively high MCS to modulate data stream 220, and UE 115-a may utilize relatively low complexity and processing to demodulate data stream 220.

[0097] Figure 3 An example of a process flow 300 supporting SNR balancing using an SVD combiner pre-decoder matrix according to one or more aspects of this disclosure is shown. Process flow 300 may implement, or be implemented by, aspects of wireless communication system 100 or wireless communication system 200. For example, process flow 300 may include UE 115 (e.g., UE 115-b) and network entity 105 (e.g., network entity 105-b), which may be as referenced... Figure 1 Examples of the corresponding devices described.

[0098] In the following description of process flow 300, operations between UE 115-b and network entity 105-b may be sent in a different order than the example order shown. Some operations may also be omitted from process flow 300, and other operations may be added to process flow 300. Furthermore, although some operations or signaling are shown to occur at different times for discussion purposes, these operations may actually occur simultaneously.

[0099] In some examples, at 305, UE 115-b may send a capability message to network entity 105-b indicating UE 115-b's ability to demodulate one or more non-orthogonal data streams. The capability message may indicate UE 115-b's ability to demodulate data streams already combined by network entity 105-b using a pre-decoder (e.g., utilizing a matrix combining one or more non-orthogonal data streams). The capability message may further indicate UE 115-b's ability to demodulate (e.g., one or more orthogonal data streams not yet combined by network entity 105-b). UE 115-b may send the capability message via an uplink channel (e.g., the Physical Uplink Control Channel (PUCCH) or the Physical Uplink Shared Channel (PUSCH)).

[0100] In some examples, at 310, network entity 105-b may select a matrix for the pre-decoder. Network entity 105-b may select a square matrix α that can combine one or more data streams from multiple data streams (e.g., and may not combine one or more additional data streams from multiple data streams). Network entity 105-b may select the matrix based on one or more singular values ​​associated with the channel (e.g., PDSCH) between network entity 105-b and UE 115-b. Network entity 105-b may select the matrix based on the SNR of each corresponding data stream from multiple data streams. Network entity 105-b may select the matrix based on one or more of the following: power constraints, UE capabilities (e.g., UE 115-b's ability to demodulate one or more non-orthogonal data streams), or one or more complexity constraints.

[0101] In some examples, network entity 105-b may select a new matrix α. For instance, network entity 105-b may receive or determine one or more new singular values ​​associated with the channel. Network entity 105-b may select a new matrix α based on one or more new singular values.

[0102] At point 315, network entity 105-b may send information to UE 115-b relating to the transmission of multiple data streams across multiple layers. This information may include indications of one or more non-orthogonal data streams (e.g., data streams combined via matrix α) and one or more orthogonal data streams (e.g., data streams not combined by matrix α). In some examples, network entity 105-b may send this information via PDCCH (e.g., a PDCCH that schedules multiple data streams). This information may be in a DCI, RRC, or MAC-CE message.

[0103] In some examples, at 320, UE 115-b may send an acknowledgment message associated with this information to network entity 105-b. The acknowledgment message may indicate that UE 115-b has received information associated with the transmission of multiple data streams. UE 115-b may send the acknowledgment message via PUCCH or PUSCH.

[0104] At position 325, network entity 105-b can send multiple data streams to UE 115-b. Network entity 105-b can use matrix α to pre-decode the multiple data streams and can send orthogonal and non-orthogonal data streams to UE 115-b. Network entity 105-b can send multiple data streams via a channel (e.g., via PDSCH).

[0105] In some examples, at 330, UE 115-b may select one or more demodulators to demodulate orthogonal and non-orthogonal data streams. For example, UE 115-b may select a first demodulator to demodulate one or more orthogonal data streams (e.g., MMSE) and a second demodulator (e.g., PSRD) to demodulate one or more non-orthogonal data streams. In some examples, UE 115-b may use the same demodulator (e.g., PSRD) to demodulate both one or more orthogonal data streams and one or more non-orthogonal data streams. In such examples, UE 115-b may use a first number of assumptions to demodulate one or more orthogonal data streams and a second number of assumptions (e.g., greater than the first number) to demodulate one or more non-orthogonal data streams.

[0106] At 335, UE 115-b can demodulate multiple data streams. UE 115-b can (e.g., using one or more selected demodulators) demodulate one or more orthogonal data streams and one or more non-orthogonal data streams. UE 115-b can demodulate multiple data streams based on indications to one or more orthogonal data streams and one or more non-orthogonal data streams.

[0107] Figure 4 A block diagram 400 illustrates a device 405 supporting SNR balancing using an SVD combiner pre-decoder matrix according to one or more aspects of this disclosure. Device 405 may be an example of various aspects of UE 115 as described herein. Device 405 may include a receiver 410, a transmitter 415, and a communication manager 420. Device 405, or one or more components of device 405 (e.g., receiver 410, transmitter 415, and communication manager 420), may include at least one processor that may be coupled to at least one memory to individually or jointly support or implement the described techniques. Each of these components may communicate with each other (e.g., via one or more buses).

[0108] Receiver 410 may provide components for receiving information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, information channels related to SNR balance using a singular value combiner pre-decoder matrix). The information may be passed to other components of device 405. Receiver 410 may utilize a single antenna or a group of multiple antennas.

[0109] Transmitter 415 may provide components for transmitting signals generated by other components of device 405. For example, transmitter 415 may transmit information associated with various information channels (e.g., control channels, data channels, information channels related to SNR balance using a singular value combiner pre-decoder matrix), such as packets, user data, control information, or any combination thereof. In some examples, transmitter 415 may be co-located with receiver 410 in a transceiver module. Transmitter 415 may utilize a single antenna or a group of multiple antennas.

[0110] The communication manager 420, receiver 410, transmitter 415, or various combinations thereof, or various components thereof, may be examples of components for performing various aspects of SNR balancing using a singular value combiner pre-decoder matrix as described herein. For example, the communication manager 420, receiver 410, transmitter 415, or various combinations thereof, or components thereof, may be able to perform one or more of the functions described herein.

[0111] In some examples, the communication manager 420, receiver 410, transmitter 415, or various combinations or components thereof may be implemented in hardware (e.g., in communication management circuitry). The hardware may include at least one of the following: a processor, digital signal processor (DSP), central processing unit (CPU), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA) or other programmable logic device, microcontroller, discrete gate or transistor logic device, discrete hardware component, or any combination thereof, configured as or otherwise individually or collectively to support components for performing the functions described herein. In some examples, at least one processor and at least one memory coupled to said at least one processor may be configured to perform one or more of the functions described herein (e.g., instructions stored in at least one memory are executed individually or collectively by one or more processors).

[0112] Additionally or alternatively, the communication manager 420, receiver 410, transmitter 415, or various combinations or components thereof may be implemented in code executed by at least one processor (e.g., as communication management software or firmware). If implemented in code executed by at least one processor, the functionality of the communication manager 420, receiver 410, transmitter 415, or various combinations or components thereof may be performed by a general-purpose processor, DSP, CPU, ASIC, FPGA, microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise individually or jointly to support components for performing the functions described in this disclosure).

[0113] In some examples, the communication manager 420 may be configured to use or otherwise cooperate with the receiver 410, transmitter 415, or both to perform various operations (e.g., receiving, acquiring, monitoring, outputting, transmitting). For example, the communication manager 420 may receive information from the receiver 410, transmit information to the transmitter 415, or be integrated with the receiver 410, transmitter 415, or both to acquire information, output information, or perform various other operations as described herein.

[0114] Communication manager 420 may support wireless communication according to examples disclosed herein. For example, communication manager 420 may be capable of, configured to, or operable to support components for receiving from a network entity information associated with the transmission of a set of multiple data streams at a set of multiple layers, wherein the information includes indications of one or more orthogonal data streams and one or more non-orthogonal data streams in the set of multiple data streams. Communication manager 420 may be capable of, configured to, or operable to support components for receiving the set of multiple data streams from the network entity. Communication manager 420 may be capable of, configured to, or operable to support components for demodulating the set of multiple data streams based on the indications.

[0115] By including or configuring a communication manager 420 according to an example as described herein, device 405 (e.g., controlling receiver 410, transmitter 415, communication manager 420 or a combination thereof or at least one processor otherwise coupled to them) can support techniques for dynamically combining or not combining data streams, which can allow for a reduction in processing associated with lower-complexity demodulation.

[0116] Figure 5 A block diagram 500 of a device 505 supporting SNR balancing using an SVD combiner pre-decoder matrix according to one or more aspects of this disclosure is shown. Device 505 may be an example of aspects of device 405 or UE 115 as described herein. Device 505 may include receiver 510, transmitter 515, and communication manager 520. Device 505, or one or more components of device 505 (e.g., receiver 510, transmitter 515, and communication manager 520), may include at least one processor that can be coupled to at least one memory to support the described techniques. Each of these components may communicate with each other (e.g., via one or more buses).

[0117] Receiver 510 may provide components for receiving information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, and information channels related to SNR balance using a singular value combiner pre-decoder matrix). The information may be passed to other components of device 505. Receiver 510 may utilize a single antenna or a group of multiple antennas.

[0118] Transmitter 515 may provide components for transmitting signals generated by other components of device 505. For example, transmitter 515 may transmit information associated with various information channels (e.g., control channels, data channels, information channels related to SNR balance using a singular value combiner pre-decoder matrix), such as packets, user data, control information, or any combination thereof. In some examples, transmitter 515 may be co-located with receiver 510 in a transceiver module. Transmitter 515 may utilize a single antenna or a group of multiple antennas.

[0119] Device 505 or its various components may be examples of parts for performing various aspects of SNR balancing using a singular value combiner pre-decoder matrix as described herein. For example, communication manager 520 may include data stream information manager 525, data stream receive manager 530, data stream demodulation manager 535, or any combination thereof. Communication manager 520 may be examples of aspects of communication manager 420 as described herein. In some examples, communication manager 520 or its various components may be configured to use or otherwise cooperate with receiver 510, transmitter 515, or both to perform various operations (e.g., receive, acquire, monitor, output, transmit). For example, communication manager 520 may receive information from receiver 510, transmit information to transmitter 515, or be integrated in combination with receiver 510, transmitter 515, or both to acquire information, output information, or perform various other operations as described herein.

[0120] Communication manager 520 may support wireless communication according to examples disclosed herein. Data stream information manager 525 is capable of, configured to, or operable to support components for receiving information associated with the transmission of a set of multiple data streams at a set of multiple layers from a network entity, wherein the information includes indications of one or more orthogonal data streams and one or more non-orthogonal data streams in the set of multiple data streams. Data stream reception manager 530 is capable of, configured to, or operable to support components for receiving the set of multiple data streams from the network entity. Data stream demodulation manager 535 is capable of, configured to, or operable to support components for demodulating the set of multiple data streams based on the indications.

[0121] Figure 6A block diagram 600 is shown of a communication manager 620 supporting SNR balancing using an SVD combiner pre-decoder matrix according to one or more aspects of this disclosure. The communication manager 620 may be an example of aspects of the communication manager 420, communication manager 520, or both as described herein. The communication manager 620 or its various components may be examples of components for performing various aspects of SNR balancing using an SVD combiner pre-decoder matrix as described herein. For example, the communication manager 620 may include a data stream information manager 625, a data stream receive manager 630, a data stream demodulation manager 635, a data stream demodulation capability manager 640, a data stream demodulator selection manager 645, a data stream information acknowledgment manager 650, or any combination thereof. Each of these components, or its components or sub-components (e.g., one or more processors, one or more memories), may communicate directly or indirectly with each other (e.g., via one or more buses).

[0122] The communication manager 620 may support wireless communication according to examples disclosed herein. In some examples, the data stream demodulation capability manager 640 is capable of, configured to, or operable to support components for sending capability messages to network entities, indicating the UE's capability to demodulate one or more non-orthogonal data streams.

[0123] The data flow information manager 625 is capable of, configured to, or operable to support components for receiving information from the network entity associated with the transmission of a set of multiple data flows at a set of multiple layers, wherein the information includes indications of one or more orthogonal data flows and one or more non-orthogonal data flows in the set of multiple data flows.

[0124] In some examples, the data stream information acknowledgment manager 650 is capable of, configured to, or operable to support components for sending acknowledgment messages to the network entity in response to information associated with the transmission of the set of multiple data streams.

[0125] The data stream receive manager 630 is capable of, configured to, or operable to support components for receiving the set of multiple data streams from the network entity. The data stream demodulation manager 635 is capable of, configured to, or operable to support components for demodulating the set of multiple data streams based on the instruction.

[0126] In some examples, the data stream demodulator selection manager 645 is capable of, configured to, or operable to support components for selecting one or more demodulators based on the indication and one or more capabilities of the UE, wherein the set of multiple data streams is demodulated using the one or more demodulators.

[0127] In some examples, in order to support the demodulation of the set of multiple data streams, the data stream demodulation manager 635 can be, configured, or operated to support components for: using a first demodulator to demodulate the one or more non-orthogonal data streams, and using a second demodulator to demodulate the one or more orthogonal data streams.

[0128] In some examples, in order to support the demodulation of the set of multiple data streams, the data stream demodulation manager 635 is capable of, can be configured to, or can operate to support components for: demodulating the one or more non-orthogonal data streams using a first demodulator with a first number of assumptions, and demodulating the one or more orthogonal data streams using the first demodulator with a second number of assumptions.

[0129] In some examples, the information associated with the transmission of this set of multiple data streams is received via the physical downlink control channel.

[0130] In some examples, the information associated with the transmission of the set of multiple data streams is received via a control message that schedules the set of multiple data streams.

[0131] In some examples, this set of multiple data streams is received via a physical downlink shared channel.

[0132] Figure 7 A diagram of a system 700 including device 705 supporting SNR balancing using an SVD combiner pre-decoder matrix, according to one or more aspects of this disclosure, is shown. Device 705 may be an example of device 405, device 505, or UE 115 as described herein, or may include components thereof. Device 705 may communicate with one or more network entities 105, one or more UEs 115, or any combination thereof (e.g., wirelessly). Device 705 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, such as a communication manager 720, an input / output (I / O) controller 710, a transceiver 715, an antenna 725, at least one memory 730, code 735, and at least one processor 740. These components may communicate electronically or be coupled in other ways (e.g., operational ground, communication ground, functional ground, electronic ground, electrical ground) via one or more buses (e.g., bus 745).

[0133] I / O controller 710 manages the input and output signals of device 705. I / O controller 710 can also manage peripheral devices not integrated into device 705. In some cases, I / O controller 710 may represent a physical connection or port to an external peripheral device. In some cases, I / O controller 710 may utilize an operating system such as iOS. ® ANDROID ®MS-DOS ® MS-WINDOWS ® OS / 2 ® UNIX ® LINUX ® Alternatively, the I / O controller 710 may represent or interact with a modem, keyboard, mouse, touchscreen, or similar device. In some cases, the I / O controller 710 may be implemented as part of one or more processors, such as at least one processor 740. In some cases, a user may interact with the device 705 via the I / O controller 710 or via hardware components controlled by the I / O controller 710.

[0134] In some cases, device 705 may include a single antenna 725. However, in other cases, device 705 may have more than one antenna 725, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. Transceiver 715 may communicate bidirectionally via one or more antennas 725 as described herein, or via a wired or wireless link. For example, transceiver 715 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. Transceiver 715 may also include a modem for: modulating packets; providing the modulated packets to one or more antennas 725 for transmission; and demodulating packets received from one or more antennas 725. Transceiver 715, or transceiver 715 and one or more antennas 725, may be an example of transmitter 415, transmitter 515, receiver 410, receiver 510, or any combination thereof or components thereof as described herein.

[0135] At least one memory 730 may include random access memory (RAM) and read-only memory (ROM). At least one memory 730 may store computer-readable, computer-executable code 735, including instructions that, when executed by at least one processor 740, cause device 705 to perform the various functions described herein. Code 735 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, code 735 may not be directly executable by at least one processor 740, but may enable a computer (e.g., when compiled and executed) to perform the functions described herein. In some cases, among other things, at least one memory 730 may also include a basic I / O system (BIOS) that controls basic hardware or software operations, such as interaction with peripheral components or devices.

[0136] At least one processor 740 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, at least one processor 740 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into at least one processor 740. At least one processor 740 may be configured to execute computer-readable instructions stored in memory (e.g., at least one memory 730) to cause device 705 to perform various functions (e.g., functions or tasks supporting SNR balancing using a singular value combiner pre-decoder matrix). For example, device 705 or components of device 705 may include at least one processor 740 and at least one memory 730 coupled to or coupled to at least one processor 740, wherein at least one processor 740 and at least one memory 730 are configured to perform the various functions described herein. In some examples, at least one processor 740 may include multiple processors, and at least one memory 730 may include multiple memories. One or more of a plurality of processors may be coupled to one or more of a plurality of memories, which may be configured individually or collectively to perform the various functions described herein. In some examples, at least one processor 740 may be a component of a processing system, which may refer to a system of machines (such as a series of machines), circuitry (including, for example, one or both of processor circuitry (which may include at least one processor 740) and memory circuitry (which may include at least one memory 730)) or components that receive or receive input and process the input to produce, generate or obtain a set of outputs. The processing system may be configured to perform one or more of the functions described herein. Thus, at least one processor 740 or a processing system including at least one processor 740 may be configured, capable of being configured, or operable to cause device 705 to perform one or more of the functions described herein. Furthermore, as described herein, “configured to,” “capable of being configured,” and “operable to” are used interchangeably and may be associated with the ability to perform one or more of the functions described herein when executing code stored in at least one memory 730 or otherwise.

[0137] The communication manager 720 may support wireless communication according to examples disclosed herein. For example, the communication manager 720 may be capable of, configured to, or operable to support components for receiving information associated with the transmission of a set of multiple data streams at a set of multiple layers from a network entity, wherein the information includes indications of one or more orthogonal data streams and one or more non-orthogonal data streams in the set of multiple data streams. The communication manager 720 may be capable of, configured to, or operable to support components for receiving the set of multiple data streams from the network entity. The communication manager 720 may be capable of, configured to, or operable to support components for demodulating the set of multiple data streams based on the indications.

[0138] By including or configuring a communication manager 720 according to an example as described herein, device 705 can support techniques for dynamically combining or not combining data streams, which can allow for improved communication reliability, reduced latency, improved coordination between devices, and improved utilization of processing power.

[0139] In some examples, the communication manager 720 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using a transceiver 715, one or more antennas 725, or any combination thereof, or otherwise cooperating with them. Although the communication manager 720 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 720 may be supported by or executed by at least one processor 740, at least one memory 730, code 735, or any combination thereof. For example, code 735 may include instructions that may be executed by at least one processor 740 to cause device 705 to perform various aspects of SNR balancing using a singular value combiner pre-decoder matrix as described herein, or at least one processor 740 and at least one memory 730 may be otherwise configured to perform or support such operations individually or jointly.

[0140] Figure 8 A block diagram 800 of a device 805 supporting SNR balancing using an SVD combiner pre-decoder matrix, according to one or more aspects of this disclosure, is shown. Device 805 may be an example of aspects of network entity 105 as described herein. Device 805 may include a receiver 810, a transmitter 815, and a communication manager 820. Device 805, or one or more components of device 805 (e.g., receiver 810, transmitter 815, and communication manager 820), may include at least one processor that may be coupled to at least one memory to individually or jointly support or implement the described techniques. Each of these components may communicate with each other (e.g., via one or more buses).

[0141] Receiver 810 may provide components for acquiring (e.g., receiving, determining, identifying) information (such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units)) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack). The information may be passed to other components of device 805. In some examples, receiver 810 may support acquiring information by receiving signals via one or more antennas. Additionally or alternatively, receiver 810 may support acquiring information by receiving signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof.

[0142] Transmitter 815 may provide components for outputting (e.g., transmitting, providing, conveying, transmitting) information generated by other components of device 805. For example, transmitter 815 may output information associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack), such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units). In some examples, transmitter 815 may support outputting information by transmitting signals via one or more antennas. Additionally or alternatively, transmitter 815 may support outputting information by transmitting signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof. In some examples, transmitter 815 and receiver 810 may be co-located in a transceiver, which may include or be coupled to a modem.

[0143] The communication manager 820, receiver 810, transmitter 815, or various combinations thereof, or various components thereof, may be examples of components used to perform various aspects of SNR balancing using a singular value combiner pre-decoder matrix as described herein. For example, the communication manager 820, receiver 810, transmitter 815, or various combinations thereof, or components thereof, may be able to perform one or more of the functions described herein.

[0144] In some examples, the communication manager 820, receiver 810, transmitter 815, or various combinations or components thereof may be implemented in hardware (e.g., in communication management circuitry). The hardware may include at least one of a processor, DSP, CPU, ASIC, FPGA, or other programmable logic device, microcontroller, discrete gate or transistor logic device, discrete hardware component, or any combination thereof, configured as or otherwise individually or collectively to support components for performing the functions described herein. In some examples, at least one processor and at least one memory coupled to said at least one processor may be configured to perform one or more of the functions described herein (e.g., instructions stored in at least one memory are executed individually or collectively by one or more processors).

[0145] Additionally or alternatively, the communication manager 820, receiver 810, transmitter 815, or various combinations or components thereof may be implemented in code executed by at least one processor (e.g., as communication management software or firmware). If implemented in code executed by at least one processor, the functionality of the communication manager 820, receiver 810, transmitter 815, or various combinations or components thereof may be performed by a general-purpose processor, DSP, CPU, ASIC, FPGA, microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise individually or jointly to support components for performing the functions described in this disclosure).

[0146] In some examples, the communication manager 820 may be configured to use or otherwise cooperate with the receiver 810, transmitter 815, or both to perform various operations (e.g., receiving, acquiring, monitoring, outputting, transmitting). For example, the communication manager 820 may receive information from the receiver 810, transmit information to the transmitter 815, or be integrated with the receiver 810, transmitter 815, or both to acquire information, output information, or perform various other operations as described herein.

[0147] The communication manager 820 may support wireless communication according to examples disclosed herein. For example, the communication manager 820 may be capable of, configured to, or operable to support components for transmitting to a UE information associated with the transmission of a set of multiple data streams across a set of multiple layers, wherein the information includes indications of one or more orthogonal data streams and one or more non-orthogonal data streams in the set of multiple data streams, and wherein the set of multiple data streams is pre-decoded according to a pre-decoder including a matrix combining the one or more non-orthogonal data streams. The communication manager 820 may be capable of, configured to, or operable to support components for transmitting the set of multiple data streams to the UE.

[0148] By including or configuring a communication manager 820 according to an example as described herein, device 805 (e.g., controlling receiver 810, transmitter 815, communication manager 820 or a combination thereof or at least one processor otherwise coupled to them) can support techniques for dynamically combining or not combining data streams, which can allow for a reduction in processing associated with lower-complexity demodulation.

[0149] Figure 9 A block diagram 900 illustrates a device 905 supporting SNR balancing using an SVD combiner pre-decoder matrix according to one or more aspects of this disclosure. Device 905 may be an example of aspects of device 805 or network entity 105 as described herein. Device 905 may include a receiver 910, a transmitter 915, and a communication manager 920. Device 905, or one or more components of device 905 (e.g., receiver 910, transmitter 915, and communication manager 920), may include at least one processor coupled to at least one memory to support the described techniques. Each of these components may communicate with each other (e.g., via one or more buses).

[0150] Receiver 910 may provide components for acquiring (e.g., receiving, determining, identifying) information (such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units)) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack). The information may be passed to other components of device 905. In some examples, receiver 910 may support acquiring information by receiving signals via one or more antennas. Additionally or alternatively, receiver 910 may support acquiring information by receiving signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof.

[0151] Transmitter 915 may provide components for outputting (e.g., transmitting, providing, conveying, transmitting) information generated by other components of device 905. For example, transmitter 915 may output information associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack), such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units). In some examples, transmitter 915 may support outputting information by transmitting signals via one or more antennas. Additionally or alternatively, transmitter 915 may support outputting information by transmitting signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof. In some examples, transmitter 915 and receiver 910 may be co-located in a transceiver, which may include or be coupled to a modem.

[0152] Device 905 or its various components may be examples of parts for performing various aspects of SNR balancing using a singular value combiner pre-decoder matrix as described herein. For example, communication manager 920 may include data stream information transmission component 925, data stream transmission component 930, or any combination thereof. Communication manager 920 may be examples of aspects of communication manager 820 as described herein. In some examples, communication manager 920 or its various components may be configured to use or otherwise cooperate with receiver 910, transmitter 915, or both to perform various operations (e.g., receiving, acquiring, monitoring, outputting, transmitting). For example, communication manager 920 may receive information from receiver 910, transmit information to transmitter 915, or be integrated in combination with receiver 910, transmitter 915, or both to acquire information, output information, or perform various other operations as described herein.

[0153] The communication manager 920 can support wireless communication according to examples disclosed herein. The data stream information transmission component 925 is capable of, configured to, or operable to support components for transmitting to the UE information associated with the transmission of a set of multiple data streams at a set of multiple layers, wherein the information includes indications of one or more orthogonal data streams and one or more non-orthogonal data streams in the set of multiple data streams, and wherein the set of multiple data streams is pre-decoded according to a pre-decoder including a matrix combining the one or more non-orthogonal data streams. The data stream transmission component 930 is capable of, configured to, or operable to support components for transmitting the set of multiple data streams to the UE.

[0154] Figure 10A block diagram 1000 of a communication manager 1020 supporting SNR balancing using an SVD combiner pre-decoder matrix according to one or more aspects of this disclosure is shown. The communication manager 1020 may be an example of aspects of the communication manager 820, communication manager 920, or both as described herein. The communication manager 1020 or its various components may be examples of parts for performing various aspects of SNR balancing using an SVD combiner pre-decoder matrix as described herein. For example, the communication manager 1020 may include a data stream information transmission component 1025, a data stream transmission component 1030, a pre-decoder matrix selection component 1035, a UE demodulation capability reception component 1040, a data stream information acknowledgment reception component 1045, a singular value determination component 1050, or any combination thereof. These components, or each of their components or sub-components (e.g., one or more processors, one or more memories), may communicate directly or indirectly with each other (e.g., via one or more buses), and such communication may include communication within protocol layers of the protocol stack, communication associated with logical channels of the protocol stack (e.g., between protocol layers of the protocol stack, within devices, components, or virtualization components associated with network entity 105, between devices, components, or virtualization components associated with network entity 105), or any combination thereof.

[0155] The communication manager 1020 may support wireless communication according to examples disclosed herein. In some examples, the singularity determination component 1050 is capable of, configured to, or operable to support components for determining one or more singular values ​​associated with the channel. In some examples, the predecoder matrix selection component 1035 is capable of, configured to, or operable to support components for selecting a matrix based on the one or more singular values.

[0156] In some examples, the UE demodulation capability receiving component 1040 is capable of, configured to, or able to operate to support components for receiving capability messages from the UE, which indicate the UE's capability to demodulate one or more non-orthogonal data streams.

[0157] In some examples, the predecoder matrix selection component 1035 is capable of, configured to, or able to operate to support components for selecting the matrix based on one or more singular values ​​associated with the channel between the network entity and the UE, wherein a set of multiple data streams are transmitted via the channel.

[0158] The data stream information transmission component 1025 is capable of, configured to, or operable to support components for transmitting to the UE information associated with the transmission of a set of multiple data streams at a set of multiple layers, wherein the information includes indications of one or more orthogonal data streams and one or more non-orthogonal data streams in the set of multiple data streams, and wherein the set of multiple data streams is pre-decoded according to a pre-decoder including a matrix for combining the one or more non-orthogonal data streams.

[0159] In some examples, the data stream information acknowledgment receiving component 1045 is capable of, configured to, or operable to support a component for receiving an acknowledgment message from the UE in response to the information associated with the transmission of the set of multiple data streams.

[0160] The data stream transmission component 1030 is capable of being configured or operated to support components for transmitting the set of multiple data streams to the UE.

[0161] In some examples, the matrix is ​​selected based on the SNR associated with each of the corresponding data streams in the set of multiple data streams.

[0162] In some examples, the matrix is ​​selected based on one or more power constraints, one or more capabilities of the UE, one or more complexity constraints, or some combination thereof.

[0163] In some examples, the information associated with the transmission of this set of multiple data streams is transmitted via the physical downlink control channel.

[0164] In some examples, the information associated with the transmission of the set of multiple data streams is sent via a control message that schedules the set of multiple data streams.

[0165] In some examples, this set of multiple data streams is transmitted via a physical downlink shared channel.

[0166] Figure 11A diagram of a system 1100 including device 1105 supporting SNR balancing using an SVD combiner pre-decoder matrix, according to one or more aspects of this disclosure, is shown. Device 1105 may be an example of device 805, device 905, or network entity 105 as described herein, or may include components thereof. Device 1105 may communicate with one or more network entities 105, one or more UEs 115, or any combination thereof, and such communication may include communication via one or more wired interfaces, one or more wireless interfaces, or any combination thereof. Device 1105 may include components that support output and enable communication, such as a communication manager 1120, a transceiver 1110, an antenna 1115, at least one memory 1125, code 1130, and at least one processor 1135. These components may communicate electronically or otherwise (e.g., operative ground, communication ground, functional ground, electronic ground, electrical ground) via one or more buses (e.g., bus 1140).

[0167] Transceiver 1110 may support bidirectional communication via a wired link, a wireless link, or both, as described herein. In some examples, transceiver 1110 may include a wired transceiver and be capable of bidirectional communication with another wired transceiver. Additionally or alternatively, in some examples, transceiver 1110 may include a wireless transceiver and be capable of bidirectional communication with another wireless transceiver. In some examples, device 1105 may include one or more antennas 1115 that are capable of (e.g., concurrently) transmitting or receiving wireless transmissions. Transceiver 1110 may also include a modem for: modulating a signal; providing the modulated signal for transmission (e.g., via one or more antennas 1115, via a wired transmitter); receiving the modulated signal (e.g., from one or more antennas 1115, from a wired receiver); and demodulating the signal. In some embodiments, transceiver 1110 may include one or more interfaces, such as one or more interfaces coupled to one or more antennas 1115 configured to support various receive or acquire operations, or one or more interfaces coupled to one or more antennas 1115 configured to support various transmit or output operations, or combinations thereof. In some embodiments, transceiver 1110 may include one or more processors or one or more memory components or configured to be coupled to such processors or memory components, which are operable to perform or support operations based on received or acquired information or signals, or to generate information or other signals for transmission or other output, or any combination thereof. In some embodiments, transceiver 1110, or transceiver 1110 and one or more antennas 1115, or transceiver 1110 and one or more antennas 1115 and one or more processors or one or more memory components (e.g., at least one processor 1135, at least one memory 1125, or both) may be included in a chip or chip assembly mounted in device 1105. In some examples, transceiver 1110 may be able to operate to support communication via one or more communication links (e.g., communication link 125, backhaul communication link 120, midhaul communication link 162, fronthaul communication link 168).

[0168] At least one memory 1125 may include RAM, ROM, or any combination thereof. At least one memory 1125 may store computer-readable, computer-executable code 1130 including instructions that, when executed by one or more processors of at least one processor 1135, cause device 1105 to perform the various functions described herein. Code 1130 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, code 1130 may not be directly executable by a processor of at least one processor 1135, but may enable a computer (e.g., when compiled and executed) to perform the functions described herein. In some cases, at least one memory 1125 may also include a BIOS, among other things, that controls basic hardware or software operation, such as interaction with peripheral components or devices. In some examples, at least one processor 1135 may include multiple processors, and at least one memory 1125 may include multiple memories. One or more of the multiple processors may be coupled to one or more of the multiple memories, which may be configured individually or collectively to perform the various functions described herein (e.g., as part of a processing system).

[0169] At least one processor 1135 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, ASICs, CPUs, FPGAs, microcontrollers, programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any combination thereof). In some cases, at least one processor 1135 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into one or more processors in at least one processor 1135. At least one processor 1135 may be configured to execute computer-readable instructions stored in memory (e.g., one or more memories in at least one memory 1125) to cause device 1105 to perform various functions (e.g., functions or tasks supporting SNR balancing using a singular value combiner pre-decoder matrix). For example, device 1105 or components of device 1105 may include at least one processor 1135 and at least one memory 1125 coupled to one or more processors in at least one processor 1135, wherein at least one processor 1135 and at least one memory 1125 are configured to perform the various functions described herein. At least one processor 1135 may be an example of a cloud computing platform (e.g., one or more physical nodes and supporting software such as an operating system, virtual machine, or container instance) that can (e.g., by executing code 1130) host functions for performing the functions of device 1105. At least one processor 1135 may be any one or more suitable processors capable of executing scripts or instructions of one or more software programs stored in device 1105 (such as within one or more memories of at least one memory 1125). In some examples, at least one processor 1135 may include multiple processors, and at least one memory 1125 may include multiple memories. One or more of the multiple processors may be coupled to one or more of the multiple memories, which may be configured individually or collectively to perform the various functions described herein. In some examples, at least one processor 1135 may be a component of a processing system, which may refer to a system of machines (such as a series of machines), circuits (including, for example, one or both of processor circuitry (which may include at least one processor 1135) and memory circuitry (which may include at least one memory 1125)) or components that receive or acquire input and process the input to produce, generate, or acquire a set of outputs. The processing system can be configured to perform one or more of the functions described herein. Thus, at least one processor 1135 or a processing system including at least one processor 1135 can be configured, configured to, or operated to cause the device 1105 to perform one or more of the functions described herein.Furthermore, as described herein, “configured to,” “capable of being configured to,” and “capable of operating to” are used interchangeably and can be associated with the ability to perform one or more of the functions described herein when executing code stored in at least one memory 1125 or otherwise.

[0170] In some examples, bus 1140 may support communication at the protocol layer of the protocol stack (e.g., within a protocol layer). In some examples, bus 1140 may support communication associated with logical channels of the protocol stack (e.g., between protocol layers of the protocol stack), which may include communication performed within components of device 1105, or communication performed between different components of device 1105 that are co-addressable or may be located in different locations (e.g., where device 1105 may refer to a system in which one or more of communication manager 1120, transceiver 1110, at least one memory 1125, code 1130 and at least one processor 1135 may be located in one component of different components or partitioned between different components).

[0171] In some examples, the communication manager 1120 may manage (e.g., via one or more wired or wireless backhaul links) various aspects of communication with the core network 130. For example, the communication manager 1120 may manage the delivery of data communications by client devices, such as one or more UEs 115. In some examples, the communication manager 1120 may manage communication with other network entities 105 and may include a controller or scheduler for cooperating with other network entities 105 to control communication with UE 115. In some examples, the communication manager 1120 may support an X2 interface within LTE / LTE-A wireless communication network technology to provide communication between network entities 105.

[0172] The communication manager 1120 may support wireless communication according to examples disclosed herein. For example, the communication manager 1120 may be capable of, configured to, or operable to support components for transmitting to a UE information associated with the transmission of a set of multiple data streams across a set of multiple layers, wherein the information includes indications of one or more orthogonal data streams and one or more non-orthogonal data streams in the set of multiple data streams, and wherein the set of multiple data streams is pre-decoded according to a pre-decoder including a matrix combining the one or more non-orthogonal data streams. The communication manager 1120 may be capable of, configured to, or operable to support components for transmitting the set of multiple data streams to the UE.

[0173] By including or configuring a communication manager 1120 according to an example as described herein, device 1105 can support techniques for dynamically combining or not combining data streams, which can allow for improved communication reliability, improved and reduced processing-related user experience, reduced power consumption, and improved utilization of processing power.

[0174] In some examples, the communication manager 1120 may be configured to use or otherwise coordinate with the transceiver 1110, one or more antennas 1115 (e.g., where applicable), or any combination thereof to perform various operations (e.g., receiving, acquiring, monitoring, outputting, transmitting). Although the communication manager 1120 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 1120 may be supported or performed by the transceiver 1110, one or more processors in at least one processor 1135, one or more memories in at least one memory 1125, code 1130, or any combination thereof (e.g., by a processing system including at least a portion of at least one processor 1135, at least one memory 1125, code 1130, or any combination thereof). For example, code 1130 may include instructions that can be executed by one or more processors of at least one processor 1135 to cause device 1105 to perform various aspects of SNR balancing using a singular value combiner pre-decoder matrix as described herein, or at least one processor 1135 and at least one memory 1125 may otherwise be configured to perform or support such operations individually or jointly.

[0175] Figure 12 A flowchart illustrating a method 1200 for supporting SNR balancing using an SVD combiner pre-decoder matrix according to various aspects of this disclosure is shown. The operation of method 1200 can be implemented by a UE or its components as described herein. For example, the operation of method 1200 can be implemented by, as referenced... Figures 1 to 7 The UE 115 described herein performs the following: In some examples, the UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the described functions.

[0176] At 1205, the method may include receiving from a network entity information associated with the transmission of a set of multiple data streams across a set of multiple layers, wherein the information includes indications of one or more orthogonal data streams in the set of multiple data streams and one or more non-orthogonal data streams in the set of multiple data streams. The operation of 1205 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1205 may be provided by reference to [reference needed]. Figure 6 The described data stream information manager 625 is used to execute this.

[0177] At 1210, the method may include receiving the set of multiple data streams from the network entity. The operation of 1210 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1210 may be provided by reference to [reference needed]. Figure 6 The described data stream receive manager 630 is used to perform this.

[0178] At 1215, the method may include demodulating the set of multiple data streams based on the instruction. The operation of 1215 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1215 may be derived from references... Figure 6 The described data stream demodulation manager 635 is used to perform this.

[0179] Figure 13 A flowchart illustrating a method 1300 for SNR balancing using an SVD combiner pre-decoder matrix, according to various aspects of this disclosure, is shown. The operation of method 1300 can be implemented by a UE or its components as described herein. For example, the operation of method 1300 can be implemented by, as referenced... Figures 1 to 7 The UE 115 described herein performs the following: In some examples, the UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the described functions.

[0180] At 1305, the method may include receiving from a network entity information associated with the transmission of a set of multiple data streams across a set of multiple layers, wherein the information includes indications of one or more orthogonal data streams in the set of multiple data streams and one or more non-orthogonal data streams in the set of multiple data streams. Operation of 1305 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1305 may be provided by reference to [reference needed]. Figure 6 The described data stream information manager 625 is used to execute this.

[0181] At 1310, the method may include receiving the set of multiple data streams from the network entity. The operation of 1310 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1310 may be provided by reference to [reference needed]. Figure 6 The described data stream receive manager 630 is used to perform this.

[0182] At 1315, the method may include demodulating the set of multiple data streams based on the instruction. The operation of 1315 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1315 may be derived from references... Figure 6 The described data stream demodulation manager 635 is used to perform this.

[0183] At 1320, the method may include using a first demodulator to demodulate the one or more non-orthogonal data streams, and using a second demodulator to demodulate the one or more orthogonal data streams. The operation of 1320 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1320 may be provided by reference to [reference needed]. Figure 6 The described data stream demodulation manager 635 is used to perform this.

[0184] Figure 14 A flowchart illustrating a method 1400 for SNR balancing using an SVD combiner pre-decoder matrix, according to various aspects of this disclosure, is shown. The operation of method 1400 can be implemented by a UE or its components as described herein. For example, the operation of method 1400 can be implemented by, as referenced... Figures 1 to 7 The UE 115 described herein performs the following: In some examples, the UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the described functions.

[0185] At 1405, the method may include receiving from a network entity information associated with the transmission of a set of multiple data streams across a set of multiple layers, wherein the information includes indications of one or more orthogonal data streams in the set of multiple data streams and one or more non-orthogonal data streams in the set of multiple data streams. The operation of 1405 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1405 may be provided by reference to [reference needed]. Figure 6 The described data stream information manager 625 is used to execute this.

[0186] At 1410, the method may include receiving the set of multiple data streams from the network entity. The operation of 1410 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1410 may be provided by reference to [reference needed]. Figure 6 The described data stream receive manager 630 is used to perform this.

[0187] At 1415, the method may include demodulating the set of multiple data streams based on the instruction. The operation at 1415 may be performed according to examples as disclosed herein. In some examples, aspects of the operation at 1415 may be derived from references... Figure 6 The described data stream demodulation manager 635 is used to perform this.

[0188] At 1420, the method may include demodulating the one or more non-orthogonal data streams using a first demodulator with a first number of assumptions, and demodulating the one or more orthogonal data streams using the first demodulator with a second number of assumptions. The operation of 1420 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1420 may be provided by reference to [reference needed]. Figure 6The described data stream demodulation manager 635 is used to perform this.

[0189] Figure 15 A flowchart illustrating a method 1500 for SNR balancing using an SVD combiner pre-decoder matrix, according to various aspects of this disclosure, is shown. The operation of method 1500 can be implemented by a network entity or its components as described herein. For example, the operation of method 1500 can be implemented by, as referenced... Figures 1 to 3 as well as Figures 8 to 11 The described network entity performs the functions described. In some examples, the network entity may execute a set of instructions to control the functional elements of the network entity to perform the described functions. Additionally or alternatively, the network entity may use dedicated hardware to perform aspects of the described functions.

[0190] At 1505, the method may include sending to the UE information associated with the transmission of a set of multiple data streams across a set of multiple layers, wherein the information includes indications of one or more orthogonal data streams and one or more non-orthogonal data streams in the set of multiple data streams, and wherein the set of multiple data streams is pre-decoded according to a pre-decoder including a matrix for combining the one or more non-orthogonal data streams. The operation of 1505 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1505 may be provided by reference to [reference needed]. Figure 10 The data stream information sending component 1025 described herein shall be used to perform this action.

[0191] At 1510, the method may include sending the set of multiple data streams to the UE. The operation of 1510 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1510 may be provided by reference to [reference needed]. Figure 10 The described data stream sending component 1030 is executed.

[0192] Figure 16 A flowchart illustrating method 1600 for SNR balancing using an SVD combiner pre-decoder matrix, according to various aspects of this disclosure, is shown. The operation of method 1600 can be implemented by a network entity or its components as described herein. For example, the operation of method 1600 can be implemented by, as referenced... Figures 1 to 3 as well as Figures 8 to 11 The described network entity performs the functions described. In some examples, the network entity may execute a set of instructions to control the functional elements of the network entity to perform the described functions. Additionally or alternatively, the network entity may use dedicated hardware to perform aspects of the described functions.

[0193] At 1605, the method may include sending to the UE information associated with the transmission of a set of multiple data streams across a set of multiple layers, wherein the information includes indications of one or more orthogonal data streams and one or more non-orthogonal data streams in the set of multiple data streams, and wherein the set of multiple data streams is pre-decoded according to a pre-decoder including a matrix for combining the one or more non-orthogonal data streams. The operation of 1605 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1605 may be provided by reference to [reference needed]. Figure 10 The data stream information sending component 1025 described herein shall be used to perform this action.

[0194] At 1610, the method may include sending the set of multiple data streams to the UE. The operation of 1610 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1610 may be provided by reference to [reference needed]. Figure 10 The described data stream sending component 1030 is executed.

[0195] At 1615, the method may include selecting the matrix based on one or more singular values ​​associated with a channel between the network entity and the UE, wherein the set of multiple data streams is transmitted via that channel. The operation of 1615 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1615 may be as described in references... Figure 10 The pre-decoder matrix selection component 1035 described is executed.

[0196] The following provides an overview of the various aspects of this disclosure: Aspect 1: A method for wireless communication by a UE, the method comprising: receiving from a network entity information associated with the transmission of a plurality of data streams at a plurality of layers, wherein the information includes indications of one or more orthogonal data streams and one or more non-orthogonal data streams among the plurality of data streams; receiving the plurality of data streams from the network entity; and demodulating the plurality of data streams at least in part based on the indications.

[0197] Aspect 2: According to the method of aspect 1, demodulating the plurality of data streams includes: using a first demodulator to demodulate the one or more non-orthogonal data streams, and using a second demodulator to demodulate the one or more orthogonal data streams.

[0198] Aspect 3: According to the method of aspect 1, demodulating the plurality of data streams includes: using a first demodulator to demodulate the one or more non-orthogonal data streams with a first number of assumptions, and using the first demodulator to demodulate the one or more orthogonal data streams with a second number of assumptions.

[0199] Aspect 4: The method according to any one of Aspects 1 to 3, the method further comprising: sending a capability message to the network entity, the capability message indicating the UE's capability to demodulate the one or more non-orthogonal data streams.

[0200] Aspect 5: The method according to any one of Aspects 1 to 4, the method further comprising: selecting one or more demodulators at least in part based on the indication and at least in part based on one or more capabilities of the UE, wherein the plurality of data streams are demodulated using the one or more demodulators.

[0201] Aspect 6: The method according to any one of Aspects 1 to 5, the method further comprising: sending an acknowledgment message to the network entity in response to the information associated with the transmission of the plurality of data streams.

[0202] Aspect 7: The method according to any one of aspects 1 to 6, wherein the information associated with the transmission of the plurality of data streams is received via PDCCH.

[0203] Aspect 8: According to the method of aspect 7, wherein the information associated with the transmission of the plurality of data streams is received via a control message that schedules the plurality of data streams.

[0204] Aspect 9: The method according to any one of Aspects 1 to 8, wherein the plurality of data streams are received via PDSCH.

[0205] Aspect 10: A method for wireless communication by a network entity, the method comprising: sending to a UE information associated with the transmission of a plurality of data streams at a plurality of layers, wherein the information includes indications of one or more orthogonal data streams and one or more non-orthogonal data streams among the plurality of data streams, and wherein the plurality of data streams are pre-decoded according to a pre-decoder, the pre-decoder including a matrix combining the one or more non-orthogonal data streams; and sending the plurality of data streams to the UE.

[0206] Aspect 11: The method according to aspect 10, the method further comprising: selecting the matrix based at least in part on one or more singular values ​​associated with a channel between the network entity and the UE, wherein the plurality of data streams are transmitted via the channel.

[0207] Aspect 12: According to the method of aspect 11, wherein the matrix is ​​selected at least in part based on the SNR associated with each of the plurality of data streams.

[0208] Aspect 13: The method according to any one of Aspects 11 to 12, wherein the matrix is ​​selected at least in part based on one or more power constraints, one or more capabilities of the UE, one or more complexity constraints, or some combination thereof.

[0209] Aspect 14: The method according to any one of aspects 11 to 13, the method further comprising: determining one or more new singular values ​​associated with the channel; and selecting a new matrix based at least in part on the one or more new singular values.

[0210] Aspect 15: The method according to any one of Aspects 10 to 14, the method further comprising: receiving a capability message from the UE, the capability message indicating the UE's capability to demodulate the one or more non-orthogonal data streams.

[0211] Aspect 16: The method according to any one of Aspects 10 to 15, the method further comprising: receiving an acknowledgment message from the UE in response to the information associated with the transmission of the plurality of data streams.

[0212] Aspect 17: The method according to any one of aspects 10 to 16, wherein the information associated with the transmission of the plurality of data streams is transmitted via PDCCH.

[0213] Aspect 18: The method according to aspect 17, wherein the information associated with the transmission of the plurality of data streams is transmitted via a control message that schedules the plurality of data streams.

[0214] Aspect 19: The method according to any one of aspects 10 to 18, wherein the plurality of data streams are transmitted via PDSCH.

[0215] Aspect 20: A UE for wireless communication, the UE comprising: one or more memories storing processor-executable code; and one or more processors coupled to the one or more memories and capable of operating individually or jointly to execute the code to cause the UE to perform a method according to any one of aspects 1 to 9.

[0216] Aspect 21: A UE for wireless communication, the UE comprising at least one component for performing the method according to any one of aspects 1 to 9.

[0217] Aspect 22: A non-transitory computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform the method according to any one of aspects 1 to 9.

[0218] Aspect 23: A network entity for wireless communication, the network entity comprising: one or more memories storing processor-executable code; and one or more processors coupled to the one or more memories and capable of operating individually or jointly to execute the code to cause the network entity to perform a method according to any one of aspects 10 to 19.

[0219] Aspect 24: A network entity for wireless communication, the network entity comprising at least one component for performing the method according to any one of aspects 10 to 19.

[0220] Aspect 25: A non-transitory computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform the method according to any one of aspects 10 to 19.

[0221] It should be noted that the methods described herein describe possible specific implementations, and the operations and steps can be rearranged or otherwise modified, and other specific implementations are also possible. Furthermore, aspects from two or more of these methods can be combined.

[0222] While aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for illustrative purposes, and the terms LTE, LTE-A, LTE-A Pro, or NR may be used in most of the description, the techniques described herein are also applicable to networks other than LTE, LTE-A, LTE-A Pro, or NR networks. For example, the techniques described are applicable to a variety of other wireless communication systems, such as Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0223] The information and signals described herein can be represented using any of a variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the description can be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or optical particles, or any combination thereof.

[0224] The various exemplary blocks and components described herein can be implemented or performed using a general-purpose processor, DSP, ASIC, CPU, FPGA or other programmable logic device, discrete gate or transistor logic unit, discrete hardware component, or any combination thereof, designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but in alternative embodiments, a processor may be any processor, controller, microcontroller, or state machine. A 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 cooperating with a DSP core, or any other such configuration). Any function or operation described herein that can be performed by a processor may be performed by multiple processors capable of performing the described functions or operations individually or jointly.

[0225] The functionality described herein can be implemented using hardware, software executed by a processor, firmware, or any combination thereof. When implemented using software executed by a processor, the functionality can be stored as one or more instructions or code on a computer-readable medium or transmitted using one or more instructions or code on a computer-readable medium. Other examples and specific implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functionality described herein can be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination of these. Features implementing the functionality can also be physically located in various locations, including portions distributed such that the functionality is implemented at different physical locations.

[0226] Computer-readable media includes both non-transitory computer storage media and communication media, encompassing any medium that facilitates the transfer of a computer program from one location to another. Non-transitory storage media can be any available medium accessible by a general-purpose or special-purpose computer. By way of example, and not limitation, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compressed optical disc (CD) ROM or other optical disc storage devices, magnetic disk storage devices or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired program code components in the form of instructions or data structures, and accessible by a general-purpose or special-purpose computer or a general-purpose or special-purpose processor. Furthermore, any connection is appropriately referred to as computer-readable media. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included within the definition of computer-readable media. As used herein, disks and optical discs include CDs, laser discs, optical discs, digital multifunction discs (DVDs), floppy disks, and Blu-ray discs. Disks can magnetically reproduce data, and optical discs can optically reproduce data using lasers. Combinations of the above are also included within the scope of computer-readable media. Any function or operation described herein that can be performed by memory can be performed by multiple memories capable of performing the described function or operation individually or jointly.

[0227] As used herein, the word "or" in a list of items (e.g., a list of items accompanied by phrases such as "at least one of" or "one or more of") in the claims indicates an inclusive list, such that a list of at least one of, for example, A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Furthermore, as used herein, the phrase "based on" should not be construed as a reference to a closed set of conditions. For example, an example step described as "based on condition A" could be based on both condition A and condition B without departing from the scope of this disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "at least partially based on".

[0228] As used herein, including in claims, the article “a” preceding a noun is open-ended and is understood to refer to “at least one” or “one or more” of those nouns. Therefore, the terms “a,” “at least one,” “one or more,” and “at least one of one or more” are interchangeable. For example, where a claim enumerates “components” performing one or more functions, each of the individual functions may be performed by a single component or by any combination of multiple components. Thus, the term “component” having a characteristic or performing a function may refer to “at least one of one or more components” having a particular characteristic or performing a particular function. Subsequent references to a component introduced with the article “a” using the terms “the” or “the” can refer to any or all of the one or more components. For example, a component introduced with the article “a” can be understood to mean “one or more components,” and subsequent reference to “the component” in a claim can be understood as equivalent to referring to “at least one of the one or more components.” Similarly, subsequent references to a component introduced with the terms “the” or “the” as “one or more components” can refer to any or all of the one or more components. For example, reference to "the one or more components" in the subsequent claims can be understood as equivalent to reference to "at least one of the one or more components".

[0229] The term "determine" encompasses a variety of actions, and therefore, "determine" can include calculation, computation, processing, derivation, investigation, lookup (such as by searching in a table, database, or other data structure), identification, and similar actions. Furthermore, "determine" can include receiving (e.g., receiving information), accessing (e.g., accessing data stored in memory), etc. Moreover, "determine" can include parsing, obtaining, selecting, choosing, building, and other similar actions.

[0230] In the accompanying drawings, similar components or features may have the same reference numerals. Furthermore, various components of the same type can be distinguished by adding a dash after the reference numerals and a second reference numeral for differentiation between similar components. If only the first reference numeral is used in the description, the description applies to any of the similar components having the same first reference numeral, regardless of the second or other subsequent reference numerals.

[0231] The description herein, illustrated with reference to the accompanying drawings, describes an example configuration and does not represent all achievable examples or those within the scope of the claims. The term "example" as used herein means "serving as an example, instance, or illustration," not "preferred" or "advantageous over other examples." The detailed description includes specific details used to provide an understanding of the described techniques. However, these techniques can be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form to avoid obscuring the concept of the described examples.

[0232] The description herein is provided to enable those skilled in the art to implement or use this disclosure. Various modifications to this disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the scope of this disclosure. Therefore, this disclosure is not limited to the examples and designs described herein, but should be granted the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A user equipment (UE), the user equipment (UE) comprising: One or more memories, wherein the one or more memories store processor-executable code; and One or more processors, coupled to one or more memories and capable of operating individually or jointly to execute the code to enable the UE: Receive information from a network entity associated with the transmission of multiple data streams at multiple layers, wherein the information includes indications of one or more orthogonal data streams and one or more non-orthogonal data streams among the multiple data streams; Receive the plurality of data streams from the network entity; as well as The multiple data streams are demodulated at least in part based on the instructions.

2. The UE of claim 1, wherein, in order to demodulate the plurality of data streams, the one or more processors are capable of operating individually or jointly to execute the code to cause the UE to: A first demodulator is used to demodulate the one or more non-orthogonal data streams, and a second demodulator is used to demodulate the one or more orthogonal data streams.

3. The UE of claim 1, wherein, in order to demodulate the plurality of data streams, the one or more processors are capable of operating individually or jointly to execute the code to cause the UE to: The first demodulator is used to demodulate the one or more non-orthogonal data streams with a first number of assumptions, and the first demodulator is used to demodulate the one or more orthogonal data streams with a second number of assumptions.

4. The UE of claim 1, wherein the one or more processors are individually or jointly capable of further operating to execute the code to cause the UE to: A capability message is sent to the network entity, the capability message indicating the UE's ability to demodulate one or more non-orthogonal data streams.

5. The UE of claim 1, wherein the one or more processors are individually or jointly capable of further operating to execute the code to cause the UE to: One or more demodulators are selected, at least in part based on the indication and at least in part based on one or more capabilities of the UE, wherein the plurality of data streams are demodulated using the one or more demodulators.

6. The UE of claim 1, wherein the one or more processors are individually or jointly capable of further operating to execute the code to cause the UE to: An acknowledgment message is sent to the network entity in response to the information associated with the transmission of the plurality of data streams.

7. The UE of claim 1, wherein the information associated with the transmission of the plurality of data streams is received via a physical downlink control channel.

8. The UE of claim 7, wherein the information associated with the transmission of the plurality of data streams is received via a control message that schedules the plurality of data streams.

9. The UE of claim 1, wherein the plurality of data streams are received via a physical downlink shared channel.

10. A network entity, the network entity comprising: One or more memories, wherein the one or more memories store processor-executable code; and One or more processors, coupled to one or more memories and capable of operating individually or jointly to execute the code to enable the network entity: Sending information to user equipment (UE) associated with the transmission of multiple data streams at multiple layers, wherein the information includes indications of one or more orthogonal data streams and one or more non-orthogonal data streams among the multiple data streams, and wherein the multiple data streams are pre-decoded according to a pre-decoder, the pre-decoder including a matrix for combining the one or more non-orthogonal data streams; as well as The plurality of data streams are sent to the UE.

11. The network entity of claim 10, wherein the one or more processors are individually or jointly further operable to execute the code to cause the network entity to: The matrix is ​​selected at least in part based on one or more singular values ​​associated with a channel between the network entity and the UE, wherein the plurality of data streams are transmitted via the channel.

12. The network entity of claim 11, wherein the matrix is ​​selected at least in part based on the signal-to-noise ratio associated with each of the plurality of data streams.

13. The network entity of claim 11, wherein the matrix is ​​selected at least in part based on one or more power constraints, one or more capabilities of the UE, one or more complexity constraints, or some combination thereof.

14. The network entity of claim 11, wherein the one or more processors are individually or jointly further operable to execute the code to cause the network entity to: Determine one or more novel singular values ​​associated with the channel; and The new matrix is ​​selected at least in part based on the one or more new singular values.

15. The network entity of claim 10, wherein the one or more processors are individually or jointly further operable to execute the code to cause the network entity to: The UE receives a capability message indicating its ability to demodulate one or more non-orthogonal data streams.

16. The network entity of claim 10, wherein the one or more processors are individually or jointly further operable to execute the code to cause the network entity to: A confirmation message is received from the UE in response to the information associated with the transmission of the plurality of data streams.

17. The network entity of claim 10, wherein the information associated with the transmission of the plurality of data streams is transmitted via a physical downlink control channel.

18. The network entity of claim 17, wherein the information associated with the transmission of the plurality of data streams is transmitted via a control message that schedules the plurality of data streams.

19. The network entity of claim 10, wherein the plurality of data streams are transmitted via a physical downlink shared channel.

20. A method for wireless communication by a user equipment (UE), the method comprising: Receive information from a network entity associated with the transmission of multiple data streams at multiple layers, wherein the information includes indications of one or more orthogonal data streams and one or more non-orthogonal data streams among the multiple data streams; Receive the plurality of data streams from the network entity; as well as The multiple data streams are demodulated at least in part based on the instructions.

21. The method of claim 20, wherein demodulating the plurality of data streams comprises: A first demodulator is used to demodulate the one or more non-orthogonal data streams, and a second demodulator is used to demodulate the one or more orthogonal data streams.

22. The method of claim 20, wherein demodulating the plurality of data streams comprises: The first demodulator is used to demodulate the one or more non-orthogonal data streams with a first number of assumptions, and the first demodulator is used to demodulate the one or more orthogonal data streams with a second number of assumptions.

23. The method of claim 20, further comprising: A capability message is sent to the network entity, the capability message indicating the UE's ability to demodulate one or more non-orthogonal data streams.

24. The method of claim 20, further comprising: One or more demodulators are selected, at least in part based on the indication and at least in part based on one or more capabilities of the UE, wherein the plurality of data streams are demodulated using the one or more demodulators.

25. The method of claim 20, wherein the information associated with the transmission of the plurality of data streams is received via a physical downlink control channel.

26. The method of claim 25, wherein the information associated with the transmission of the plurality of data streams is received via a control message that schedules the plurality of data streams.

27. The method of claim 20, wherein the plurality of data streams are received via a physical downlink shared channel.

28. A method for wireless communication by a network entity, the method comprising: Sending information to user equipment (UE) associated with the transmission of multiple data streams at multiple layers, wherein the information includes indications of one or more orthogonal data streams and one or more non-orthogonal data streams among the multiple data streams, and wherein the multiple data streams are pre-decoded according to a pre-decoder, the pre-decoder including a matrix for combining the one or more non-orthogonal data streams; as well as The plurality of data streams are sent to the UE.

29. The method of claim 28, further comprising: The matrix is ​​selected at least in part based on one or more singular values ​​associated with a channel between the network entity and the UE, wherein the plurality of data streams are transmitted via the channel.

30. The method of claim 29, wherein the matrix is ​​selected at least in part based on the signal-to-noise ratio associated with each of the plurality of data streams.

Images