Multiplexing analog and digital communications based on channel conditions

Abstract

Methods, systems, and devices for wireless communications are described. In some examples, a wireless device may transmit a sidelink control message allocating sidelink resources for transmission of data associated with a data source. In such examples, the wireless device may allocate a first subset of the sidelink resources for transmission of a digital representation of a first portion of the data (e.g., a digital transmission) and allocate a second subset of the sidelink resources for transmission of an analog representation of a residual portion of the data (e.g., an analog transmission). Based on allocating the sidelink resources, the wireless device may transmit, via the first subset of the sidelink resources, a first signal including the digital representation of the first portion of the data and also transmit, via the second subset of the sidelink resources, a second signal including the analog representation of the residual portion of the data.

Description

MULTIPLEXING ANALOG AND DIGITAL COMMUNICATIONS BASED ON CHANNEL CONDITIONSCROSS REFERENCE

[0001] The present Application for Patent claims priority to Israeli Application No. 305214 by KUTZ et al., entitled “MULTIPLEXING ANALOG AND DIGITAL COMMUNICATIONS BASED ON CHANNEL CONDITIONS,” filed August 15, 2023. which is assigned to the assignee hereof and expressly incorporated by reference herein.FIELD OF TECHNOLOGY

[0002] The following relates to wireless communications, including multiplexing analog and digital communications based on channel conditions.BACKGROUND

[0003] Wireless communications systems are widely deployed to provide various ty pes of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the 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-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 transfomi spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple-access communications system may include one or more base stations, each supporting wireless communication for communication devices, which may be known as user equipment (UE).

[0004] The UE may have lower processing and power consumption capabilities compared to various other UEs. As such, techniques may be desired to reduce processing and power consumption at the UE.SUMMARY

[0005] The described techniques relate to improved methods, systems, devices, and apparatuses that support multiplexing analog and digital communications based on channel conditions. For example, the described techniques provide for analog and digital representations of data to be transmitted during sidelink communications. In some examples, a wireless device may transmit a sidelink control message allocating sidelink resources for transmission of data. In such examples, the wireless device may allocate a first subset of the sidelink resources for transmission of a digital representation of a first portion of the data (e.g.. a digital transmission) and allocate a second subset of the sidelink resources for transmission of an analog representation of a residual portion of the data (e.g., an analog transmission). Based on allocating the sidelink resources, the wireless device may transmit, via the first subset of the sidelink resources, a first signal including the digital representation of the first portion of the data and also transmit, via the second subset of the sidelink resources, a second signal including the analog representation of the residual portion of the data.

[0006] A method for wireless communications by a wireless device is described. The method may include communicating, via a physical sidelink control channel (PSCCH), a sidelink control message allocating sidelink resources for transmission of data associated with a data source, a first subset of the sidelink resources being allocated for transmission of a digital representation of a first portion of the data and a second subset of the sidelink resources being allocated for transmission of an analog representation of a residual portion of the data, where a first quantity of sidelink resources allocated to the first subset of the sidelink resources and a second quantity of sidelink resources allocated to the second subset of the sidelink resources are based on a ratio, and where the ratio is computed based on a quality metric of the digital representation of the data and a signal-to-noise ratio (SNR) of a physical sidelink shared channel (PSSCH), transmitting, via the first subset of the sidelink resources, a first signal including the digital representation of the first portion of the data, and transmitting, via the second subset of the sidelink resources, a second signal including the analog representation of the residual portion of the data.

[0007] A wireless device for wireless communications is described. The wireless device may include one or more memories storing processor executable code, and oneor more processors coupled with the one or more memories. The one or more processors may individually or collectively operable to execute the code to cause the wireless device to communicating, via a PSCCH, a sidelink control message allocate sidelink resources for transmission of data associated with a data source, a first subset of the sidelink resources being allocated for transmission of a digital representation of a first portion of the data and a second subset of the sidelink resources being allocated for transmission of an analog representation of a residual portion of the data, where a first quantity’ of sidelink resources allocated to the first subset of the sidelink resources and a second quantity of sidelink resources allocated to the second subset of the sidelink resources are based on a ratio, and where the ratio is computed based on a uality metric of the digital representation of the data and a SNR of a PSSCH, transmit, via the first subset of the sidelink resources, a first signal including the digital representation of the first portion of the data, and transmit, via the second subset of the sidelink resources, a second signal including the analog representation of the residual portion of the data.

[0008] Another wireless device for wireless communications is described. The wireless device may include means for communicating, via a PSCCH, a sidelink control message allocating sidelink resources for transmission of data associated with a data source, a first subset of the sidelink resources being allocated for transmission of a digital representation of a first portion of the data and a second subset of the sidelink resources being allocated for transmission of an analog representation of a residual portion of the data, where a first uantity of sidelink resources allocated to the first subset of the sidelink resources and a second quantity of sidelink resources allocated to the second subset of the sidelink resources are based on a ratio, and where the ratio is computed based on a quality metric of the digital representation of the data and a SNR of a PSSCH, means for transmitting, via the first subset of the sidelink resources, a first signal including the digital representation of the first portion of the data, and means for transmitting, via the second subset of the sidelink resources, a second signal including the analog representation of the residual portion of the data.

[0009] A non-transitory computer-readable medium storing code for wireless communications is described. The code may include instructions executable by a processor to communicating, via a PSCCH, a sidelink control message allocate sidelink resources for transmission of data associated with a data source, a first subset of thesidelink resources being allocated for transmission of a digital representation of a first portion of the data and a second subset of the sidelink resources being allocated for transmission of an analog representation of a residual portion of the data, where a first quantity of sidelink resources allocated to the first subset of the sidelink resources and a second quantity of sidelink resources allocated to the second subset of the sidelink resources are based on a ratio, and where the ratio is computed based on a uality metric of the digital representation of the data and a SNR of a PSSCH, transmit, via the first subset of the sidelink resources, a first signal including the digital representation of the first portion of the data, and transmit, via the second subset of the sidelink resources, a second signal including the analog representation of the residual portion of the data.

[0010] Some examples of the method, wireless devices, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for compressing the data of the data source according to a first compression format to generate the first portion of the data, where the first compression format may be based on the quality metric of the digital representation of the data, the SNR of the PSSCH, or a combination thereof.

[0011] Some examples of the method, wireless devices, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for encoding the first portion of the data and modulating, based on the encoding, the first portion of the data to generate the digital representation of the first portion of the data, where transmitting the first signal may be based on the modulating.

[0012] Some examples of the method, wireless devices, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for generating one or more pilot signals for the PSSCH, where modulating the first portion of the data may be further based on generating the one or more pilot signals.

[0013] Some examples of the method, wireless devices, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for decompressing, based on compressing the data of the data source, the first portion of the data, where the residual portion of the data includes adifference between the data of the data source and the decompressed first portion of the data and converting, via a digital-to-analog converter (DAC), the residual portion of the data into the analog representation of the residual portion of the data, where transmitting the second signal may be based on the converting.

[0014] Some examples of the method, wireless devices, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for filtering the second signal including the analog representation of the residual portion of the data based on a bandwidth associated with the second subset of the sidelink resources, a bandwidth of the first subset of the sidelink resources, or a combination thereof.

[0015] In some examples of the method, wireless devices, and non-transitory computer-readable medium described herein, communicating, via the sidelink control message, an indication of a symbol of the sidelink resources allocated as a starting symbol of the first subset of the sidelink resources, a quantity of consecutive symbols from the starting symbol allocated to the first subset of the sidelink resources, a resource block (RB) of the sidelink resources allocated as a starting RB of the first subset of the sidelink resources, a quantity of consecutive RBs from the starting RB allocated to the first subset of the sidelink resources, or a combination thereof.

[0016] In some examples of the method, wireless devices, and non-transitory computer-readable medium described herein, communicating, via the sidelink control message, an indication of a symbol of the sidelink resources allocated as a starting symbol of the second subset of the sidelink resources, a quantity of consecutive symbols from the starting symbol allocated to the second subset of the sidelink resources, a RB of the sidelink resources allocated as a starting RB of the second subset of the sidelink resources, a quantity of consecutive RBs from the starting RB allocated to the second subset of the sidelink resources, or a combination thereof.

[0017] Some examples of the method, wireless devices, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting, via the sidelink control message, a scalar value associated with the ratio, where the scalar value may be based on the quality metric of the digital representation of the data and the SNR of the PSSCH.

[0018] In some examples of the method, wireless devices, and non-transitory computer-readable medium described herein, the ratio includes a quotient of a difference between the scalar value and one and the scalar value.

[0019] In some examples of the method, wireless devices, and non-transitory computer-readable medium described herein, the second subset of the sidelink resources may be allocated for the transmission of the analog representation of the residual portion of the data based on the SNR of each sidelink resource of the second subset of the sidelink resources being within a threshold.

[0020] In some examples of the method, wireless devices, and non-transitory computer-readable medium described herein, the second subset of the sidelink resources may be allocated for the transmission of the analog representation of the residual portion of the data based on an ordered list of symbols of the sidelink resources, an ordered list of RBs of the sidelink resources, or a combination thereof.

[0021] In some examples of the method, wireless devices, and non-transitory computer-readable medium described herein, the second subset of the sidelink resources may be allocated for the transmission of the analog representation of the residual portion of the data based on an ordered list of sidelink resources, and the ordered list of sidelink resources may be based on a slot format of the PSSCH.

[0022] A method for wireless communications by a wireless device is described. The method may include receiving, via a PSCCH. a sidelink control message allocating sidelink resources for transmission of data associated with a data source, a first subset of the sidelink resources being allocated for transmission of a digital representation of a first portion of the data and a second subset of the sidelink resources being allocated for transmission of an analog representation of a residual portion of the data, where a first quantity of sidelink resources allocated to the first subset of the sidelink resources and a second quantity of sidelink resources allocated to the second subset of the sidelink resources are based on a ratio, and where the ratio is computed based on a quality metric of the digital representation of the data and a SNR of a PSSCH, receiving, via the first subset of the sidelink resources, a first signal including the digital representation of the first portion of the data, and receiving, via the second subset of the sidelink resources, a second signal including the analog representation of the residual portion of the data.

[0023] A wireless device for wireless communications is described. The wireless device may include one or more memories storing processor executable code, and one or more processors coupled with the one or more memories. The one or more processors may individually or collectively operable to execute the code to cause the wireless device to receive, via a PSCCH, a sidelink control message allocating sidelink resources for transmission of data associated with a data source, a first subset of the sidelink resources being allocated for transmission of a digital representation of a first portion of the data and a second subset of the sidelink resources being allocated for transmission of an analog representation of a residual portion of the data, where a first quantity of sidelink resources allocated to the first subset of the sidelink resources and a second quantity of sidelink resources allocated to the second subset of the sidelink resources are based on a ratio, and where the ratio is computed based on a quality metric of the digital representation of the data and a SNR of a PSSCH. receive, via the first subset of the sidelink resources, a first signal including the digital representation of the first portion of the data, and receive, via the second subset of the sidelink resources, a second signal including the analog representation of the residual portion of the data.

[0024] Another wireless device for wireless communications is described. The wireless device may include means for receiving, via a PSCCH, a sidelink control message allocating sidelink resources for transmission of data associated with a data source, a first subset of the sidelink resources being allocated for transmission of a digital representation of a first portion of the data and a second subset of the sidelink resources being allocated for transmission of an analog representation of a residual portion of the data, where a first quantity of sidelink resources allocated to the first subset of the sidelink resources and a second quantity of sidelink resources allocated to the second subset of the sidelink resources are based on a ratio, and where the ratio is computed based on a quality metric of the digital representation of the data and a SNR of a PSSCH, means for receiving, via the first subset of the sidelink resources, a first signal including the digital representation of the first portion of the data, and means for receiving, via the second subset of the sidelink resources, a second signal including the analog representation of the residual portion of the data.

[0025] A non-transitoiy computer-readable medium storing code for wireless communications is described. The code may include instructions executable by aprocessor to receive, via a PSCCH, a sidelink control message allocating sidelink resources for transmission of data associated with a data source, a first subset of the sidelink resources being allocated for transmission of a digital representation of a first portion of the data and a second subset of the sidelink resources being allocated for transmission of an analog representation of a residual portion of the data, where a first quantity of sidelink resources allocated to the first subset of the sidelink resources and a second quantity of sidelink resources allocated to the second subset of the sidelink resources are based on a ratio, and where the ratio is computed based on a quality metric of the digital representation of the data and a SNR of a PSSCH. receive, via the first subset of the sidelink resources, a first signal including the digital representation of the first portion of the data, and receive, via the second subset of the sidelink resources, a second signal including the analog representation of the residual portion of the data.

[0026] Some examples of the method, wireless devices, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for performing channel estimations of the PSSCH based on one or more pilot signals transmitted via the PSSCH.

[0027] Some examples of the method, wireless devices, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for demodulating, based on the channel estimations, the first signal to obtain the digital representation of the first portion of the data, decoding, based on the demodulating, the digital representation of the first portion of the data to obtain the first portion of the data, and decompressing the first portion of the data.

[0028] Some examples of the method, wireless devices, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for decoding, based on the channel estimations, the analog representation of the residual portion of the data to obtain the residual portion of the data and combining the first portion of the data and the residual portion of the data to obtain the data associated with the data source.

[0029] In some examples of the method, wireless devices, and non-transitory computer-readable medium described herein, communicating, via the sidelink control message, an indication of a symbol of the sidelink resources allocated as a startingsymbol of the first subset of the sidelink resources, a quantity of consecutive symbols from the starting symbol allocated to the first subset of the sidelink resources, a RB of the sidelink resources allocated as a starting RB of the first subset of the sidelink resources, a quantity of consecutive RBs from the starting RB allocated to the first subset of the sidelink resources, or a combination thereof.

[0030] In some examples of the method, wireless devices, and non-transitory computer-readable medium described herein, communicating, via the sidelink control message, an indication of a symbol of the sidelink resources allocated as a starting symbol of the second subset of the sidelink resources, a quantity of consecutive symbols from the starting symbol allocated to the second subset of the sidelink resources, a RB of the sidelink resources allocated as a starting RB of the second subset of the sidelink resources, a quantity7of consecutive RBs from the starting RB allocated to the second subset of the sidelink resources, or a combination thereof.

[0031] Some examples of the method, wireless devices, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, via the sidelink control message, a scalar value associated with the ratio, where the scalar value may be based on the quality7metric of the digital representation of the data and the SNR of the PSSCH.

[0032] In some examples of the method, wireless devices, and non-transitory computer-readable medium described herein, the ratio includes a quotient of a difference between the scalar value and one and the scalar value.

[0033] In some examples of the method, wireless devices, and non-transitory7computer-readable medium described herein, the second subset of the sidelink resources may be allocated for the transmission of the analog representation of the residual portion of the data based on the SNR of each sidelink resource of the second subset of the sidelink resources being within a threshold.

[0034] In some examples of the method, wireless devices, and non-transitory7computer-readable medium described herein, the second subset of the sidelink resources may be allocated for the transmission of the analog representation of the residual portion of the data based on an ordered list of symbols of the sidelink resources, an ordered list of RBs of the sidelink resources, or a combination thereof.

[0035] In some examples of the method, wireless devices, and non-transitory computer-readable medium described herein, the second subset of the sidelink resources may be allocated for the transmission of the analog representation of the residual portion of the data based on an ordered list of sidelink resources, and the ordered list of sidelink resources may be based on a slot format of the PSSCH.BRIEF DESCRIPTION OF THE DRAWINGS

[0036] FIG. 1 shows an example of a wireless communications system that supports multiplexing analog and digital communications based on channel conditions in accordance with one or more aspects of the present disclosure.

[0037] FIG. 2 shows an example of a wireless communications systems that supports multiplexing analog and digital communications based on channel conditions in accordance with one or more aspects of the present disclosure.

[0038] FIG. 3 shows an example of a system diagram that supports multiplexing analog and digital communications based on channel conditions in accordance with one or more aspects of the present disclosure.

[0039] FIG. 4 shows examples of time slots that support multiplexing analog and digital communications based on channel conditions in accordance with one or more aspects of the present disclosure.

[0040] FIG. 5 shows an example of a process flow that supports multiplexing analog and digital communications based on channel conditions in accordance with one or more aspects of the present disclosure.

[0041] FIGs. 6 and 7 show block diagrams of devices that support multiplexing analog and digital communications based on channel conditions in accordance with one or more aspects of the present disclosure.

[0042] FIGs. 8A and FIG. 8B show block diagrams of communications managers that support multiplexing analog and digital communications based on channel conditions in accordance with one or more aspects of the present disclosure.

[0043] FIG. 9 shows a diagram of a system including a device that supports multiplexing analog and digital communications based on channel conditions in accordance with one or more aspects of the present disclosure.

[0044] FIGs. 10 through 13 show flowcharts illustrating methods that support multiplexing analog and digital communications based on channel conditions in accordance with one or more aspects of the present disclosure.DETAILED DESCRIPTION

[0045] In some wireless communications systems, a first wireless device (e.g., a smartphone or tablet) may communicate with a second wireless device (e.g., extended reality (XR) glasses) that implements one or more XR applications. In some cases, in order to be cost effective and useful to a user, the second wireless device may have reduced processing and power capabilities (e.g., to maintain battery life) as compared to those of the first wireless device, which may render the second wireless device unable to perform the processing associated with the XR applications. For example, when implementing XR applications, the second wireless device may experience an increase in power consumption and processing due to video encoding, video decoding, or video rendering, among other processes. In such cases, to reduce power consumption and processing, it may be beneficial for the second wireless device to offload (e.g., transfer) the processing of the XR applications to the first wireless device via sidelink communications. As such, techniques may be desired to enhance and make more reliable the sidelink communications in order to avoid data loss or data corruption during the sidelink communications.

[0046] The techniques described herein may enable the first wireless device the second wireless device, or both to transmit data (e.g., a video frame or image) using a combination of a digital representation of a portion of the data (e.g., a digital transmission) and an analog representation of a portion of the data (e.g., analog transmission). By using both digital and analog representations of the data, the wireless devices may achieve increased spectral efficiency in sidelink communications, thereby improving the reliability of the sidelink communications, while also simplifying reception and decoding of the transmissions at the second wireless device.

[0047] For example, a wireless device (e.g., the first wireless device or the second wireless device) may transmit, via a physical sidelink control channel (PSCCH), a sidelink control message (e.g., sidelink control information (SCI)) allocating sidelink resources for transmission of the data, where a first subset of the sidelink resources are allocated for transmission of the digital representation of a first portion of the data and a second subset of the sidelink resources are allocated for transmission of the analog representation of a residual portion of the data. In such examples, the wireless device may indicate, via the sidelink control message, at least a first quantity of sidelink resources allocated to the first subset and a second quantity of sidelink resources allocated to the second subset, where such quantities may be based on a ratio computed according to a quality metric (e.g., peak signal-to-noise ratio (pSNR)) of a digital representation the data and an SNR of a physical sidelink shared channel (PSSCH).

[0048] In this way. as the quality metric of the digital representation of the data increases or the SNR of the channel decreases, the quantity of resources allocated to the first subset of the sidelink resources may also increase. As such, the wireless device may allocate the sidelink resources in such a way as to maintain the quality of the data during transmission while also simplifying transmissions for the wireless device by using analog transmissions, thereby improving the reliability the sidelink transmission and or reducing processing and power consumption at the wireless device. In response to transmitting the sidelink control message, the wireless device may transmit, via the first subset of sidelink resources, a first signal that includes the digital representation of the first portion of the data and transmit, and via the second subset of sidelink resources, a second signal that includes the analog representation of the residual portion of the data.

[0049] Aspects of the disclosure are initially described in the context of wireless communications sy stems. Aspects of the disclosure are further described in the context of system diagrams, time slots, and process flows. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to multiplexing analog and digital communications based on channel conditions.

[0050] FIG. 1 shows an example of a wireless communications system 100 that supports multiplexing analog and digital communications based on channel conditionsin accordance with one or more aspects of the present disclosure. The wireless communications 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 communications system 100 may be a Long Term Evolution (LTE) network, an LTE- Advanced (LTE-A) network, an LTE-A Pro network, a New Radio (NR) network, or a network operating in accordance with other systems and radio technologies, including future systems and radio technologies not explicitly mentioned herein.

[0051] The network entities 105 may be dispersed throughout a geographic area to form the wireless communications system 100 and may include devices in different forms or having different capabilities. In various examples, a network entity 105 may be referred to as a network element, a mobility element, a radio access network (RAN) node, or network equipment, among other nomenclature. In some examples, network entities 105 and UEs 115 may wirelessly communicate via one or more communication links 125 (e.g.. a radio frequency (RF) access link). For example, a network entity 105 may support a coverage area 110 (e.g., a geographic coverage area) over which the UEs 115 and the network entity 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area over which a network entity 105 and a UE 115 may support the communication of signals according to one or more radio access technologies (RATs).

[0052] The UEs 115 may be dispersed throughout a coverage area 110 of the wireless communications system 100, and each UE 115 may be stationary, or mobile, or both at different times. The UEs 115 may be devices in different forms or having different capabilities. Some example UEs 115 are illustrated in FIG. 1. The UEs 115 described herein may be capable of supporting communications with various ty pes of devices, such as other UEs 115 or network entities 105, as shown in FIG. 1.

[0053] As described herein, a node of the wireless communications system 100, which may be referred to as a network node, or a wireless node, may be a network entity 105 (e.g., any network entity’ described herein), a UE 115 (e.g.. any UE described herein), a network controller, an apparatus, a device, a 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 a UE 115. As another example, a node may be a network entity’ 105. As another example, a first node may beconfigured to communicate with a second node or a third node. In one aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a UE 115. In another aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a network entity 105. In yet other aspects of this example, the first, second, and third nodes may be different relative to these examples. Similarly, reference to a UE 115, network entity7105, apparatus, device, computing sy stem, or the like may include disclosure of the UE 115, network entity 105, apparatus, device, computing system, or the like being a node. For example, disclosure that a UE 115 is configured to receive information from a network entity 105 also discloses that a first node is configured to receive information from a second node.

[0054] In some examples, network entities 105 may communicate with the core network 130, or with one another, or both. For example, network entities 105 may communicate with the core network 130 via one or more backhaul communication links 120 (e g., in accordance with an SI, N2, N3, or other interface protocol). In some examples, network entities 105 may communicate with one another via a backhaul communication link 120 (e.g., in accordance with an X2, Xn, or other interface protocol) either directly (e.g., directly between network entities 105) or indirectly (e.g., via a core network 130). In some examples, network entities 105 may communicate with one another via a midhaul communication link 162 (e.g., in accordance with a midhaul interface protocol) or a fronthaul communication link 168 (e g., in accordance with a fronthaul interface protocol), or any combination thereof. The backhaul communication links 120, midhaul communication links 162, or fronthaul communication links 168 may be or include one or more wired links (e.g., an electrical link, an optical fiber link), one or more wireless links (e.g., a radio link, a wireless optical link), among other examples or various combinations thereof. A UE 115 may communicate with the core network 130 via a communication link 155.

[0055] One or more of the network entities 105 described herein may include or may be referred to as a base station 140 (e.g., a base transceiver station, a radio base station, an NR base station, an access point, a radio transceiver, aNodeB, an eNodeB (eNB), a next-generation NodeB or a giga-NodeB (either of which may be referred to as a gNB), a 5G NB, a next-generation eNB (ng-eNB). a Home NodeB, a Home eNodeB.or other suitable terminology). Tn some examples, a network entity 105 (e.g., a base station 140) may be implemented in an aggregated (e.g., monolithic, standalone) base station architecture, which 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 a base station 140).

[0056] In some examples, a network entity 105 may be implemented in a disaggregated architecture (e.g., a disaggregated base station architecture, a disaggregated RAN architecture), which may be configured to utilize a protocol stack that is physically or logically distributed among two or more network entities 105, such as an integrated access backhaul (TAB) network, an open RAN (0-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, a netw ork entity 105 may include one or more of a central unit (CU) 160, a distributed unit (DU) 165, a radio unit (RU) 170, a RAN Intelligent Controller (R1C) 175 (e.g., a Near-Real Time RIC (Near-RT RIC), aNon-Real Time RIC (Non-RT RIC)), a Service Management and Orchestration (SMO) 180 system, or any combination thereof. An RU 170 may also be referred to as a radio head, a smart radio head, a remote radio head (RRH), a remote radio unit (RRU), or a transmission reception point (TRP). One or more components of the network entities 105 in a disaggregated RAN architecture may be co-located, or one or more components of the network entities 105 may be located in distributed locations (e.g., separate physical locations). In some examples, one or more network entities 105 of a disaggregated RAN architecture may be implemented as virtual units (e.g., a virtual CU (VCU), a virtual DU (VDU), a virtual RU (VRU)).

[0057] The split of functionality between a CU 160, a DU 165, and an RU 170 is flexible and may support different functionalities depending on which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, and any combinations thereof) are performed at a CU 160, a DU 165, or an RU 170. For example, a functional split of a protocol stack may be employed between a CU 160 and a DU 1 5 such that the CU 160 may support one or more layers of the protocol stack and the DU 165 may support one or more different layers of the protocol stack. In some examples, the CU 160 may host upper protocol layer (e.g., layer 3 (L3), layer 2 (L2)) functionality and signaling (e.g.. Radio Resource Control (RRC). service data adaptionprotocol (SD AP), Packet Data Convergence Protocol (PDCP)). The CU 160 may be connected to one or more Dus 165 or Rus 170, and the one or more Dus 165 or Rus 170 may host lower protocol layers, such as layer 1 (LI) (e.g., physical (PHY) layer) or L2 (e.g., radio link control (RLC) layer, medium access control (MAC) layer) functionality and signaling, and may each be at least partially controlled by the CU 160. Additionally, or alternatively, a functional split of the protocol stack may be employed between a DU 165 and an RU 170 such that the DU 165 may support one or more layers of the protocol stack and the RU 170 may support one or more different layers of the protocol stack. The DU 165 may support one or multiple different cells (e.g., via one or more Rus 170). In some cases, a functional split between a CU 160 and a DU 165, or between a DU 165 and an RU 170 may be within a protocol layer (e.g., some functions for a protocol layer may be performed by one of a CU 160, a DU 165, or an RU 170, while other functions of the protocol layer are performed by a different one of the CU 160, the DU 165, or the RU 170). A CU 160 may be functionally split further into CU control plane (CU-CP) and CU user plane (CU-UP) functions. A CU 160 may be connected to one or more Dus 165 via a midhaul communication link 162 (e.g., Fl, Fl-c, Fl-u), and a DU 165 may be connected to one or more Rus 170 via a fronthaul communication link 168 (e.g., open fronthaul (FH) interface). In some examples, a midhaul communication link 162 or a fronthaul communication link 168 may be implemented in accordance with an interface (e.g., a channel) between layers of a protocol stack supported by respective network entities 105 that are in communication via such communication links.

[0058] In wireless communications systems (e.g., wireless communications system 100), infrastructure and spectral resources for radio access may support wireless backhaul link capabilities to supplement wired backhaul connections, providing an IAB network architecture (e.g., to a core network 130). In some cases, in an IAB network, one or more network entities 105 (e.g., IAB nodes 104) may be partially controlled by each other. One or more IAB nodes 104 may be referred to as a donor entity or an IAB donor. One or more Dus 165 or one or more Rus 170 may be partially controlled by one or more CUs 160 associated with a donor network entity 105 (e.g., a donor base station 140). The one or more donor network entities 105 (e.g., IAB donors) may be in communication with one or more additional network entities 105 (e.g., IAB nodes 104)via supported access and backhaul links (e.g., backhaul communication links 120). TAB nodes 104 may include an IAB mobile termination (IAB-MT) controlled (e.g., scheduled) by Dus 165 of a coupled IAB donor. An IAB-MT may include an independent set of antennas for relay of communications with UEs 115, or may share the same antennas (e.g., of an RU 170) of an IAB node 104 used for access via the DU 165 of the IAB node 104 (e.g., referred to as virtual IAB-MT (vIAB-MT)). In some examples, the IAB nodes 104 may include Dus 165 that support communication links with additional entities (e.g., IAB nodes 104, UEs 115) within the relay chain or configuration of the access network (e.g., downstream). In such cases, one or more components of the disaggregated RAN architecture (e.g., one or more IAB nodes 104 or components of IAB nodes 104) may be configured to operate according to the techniques described herein.

[0059] In the case of the techniques described herein applied in the context of a disaggregated RAN architecture, one or more components of the disaggregated RAN architecture may be configured to support multiplexing analog and digital communications based on channel conditions as described herein. For example, some operations described as being performed by a UE 115 or a network entity 105 (e.g., a base station 140) may additionally, or alternatively, be performed by one or more components of the disaggregated RAN architecture (e.g., IAB nodes 104, Dus 165, CUs 160, Rus 170, RIC 175, SMO 180).

[0060] A UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where the "device” may also be referred to as a unit, a station, a terminal, or a client, among other examples. A UE 115 may also include or may be referred to as a personal electronic device such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, a UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (loT) device, an Internet of Everything (loE) device, or a machine type communications (MTC) device, among other examples, which may be implemented in various objects such as appliances, or vehicles, meters, among other examples.

[0061] The UEs 1 15 described herein may be able to communicate with various types of devices, such as other UEs 115 that may sometimes act as relays as well as the network entities 105 and the network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, as shown in FIG. 1.

[0062] The UEs 115 and the network entities 105 may wirelessly communicate with one another via one or more communication links 125 (e.g., an access link) using resources associated with one or more carriers. The term “carrier” may refer to a set of RF spectrum resources having a defined phy sical layer structure for supporting the communication links 125. For example, a carrier used for a communication link 125 may include a portion of a RF spectrum band (e.g., a bandwidth part (BWP)) that is operated according to one or more physical layer channels for a given radio access technology7(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 that coordinates operation for the carrier, user data, or other signaling. The wireless communications system 100 may support communication with a UE 115 using carrier aggregation or multi-carrier operation. A UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation may be used with both frequency division duplexing (FDD) and time division duplexing (TDD) component carriers. Communication between a network entity 105 and other devices may refer to communication between the devices and any portion (e.g., entity, subentity) of a network entity 105. For example, the terms “transmitting,” “receiving,” or “communicating,” when referring to a network entity 105, may refer to any portion of a network entity 105 (e.g., a base station 140, a CU 160, a DU 165, a RU 170) of a RAN communicating with another device (e.g., directly or via one or more other network entities 105).

[0063] Signal waveforms transmitted via a carrier may be made up of multiple subcarriers (e.g., using multi-carn er modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). In a system employing MCM techniques, a resource element may refer to resources of one sy mbol period (e.g., a duration of one modulation sy mbol) and one subcarrier, in which case the symbol period and subcarrier spacing may be inverselyrelated. The quantity of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both), such that a relatively higher quantity of resource elements (e.g., in a transmission duration) and a relatively higher order of a modulation scheme may correspond to a relatively higher rate of communication. A wireless communications resource may refer to a combination of an RF spectrum resource, a time resource, and a spatial resource (e.g., a spatial layer, a beam), and the use of multiple spatial resources may increase the data rate or data integrity for communications with a UE 115.

[0064] The time intervals for the network entities 105 or the UEs 115 may be expressed in multiples of a basic time unit which may, for example, refer to a sampling period of Ts— l / ( fmax ' f) seconds, for which fmaxmay represent a supported subcarrier spacing, and Nfmay represent a supported discrete Fourier transform (DFT) size. Time intervals of a communications resource may be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023).

[0065] Each frame may include multiple consecutively -numbered subframes or slots, and each subframe or slot may have the same duration. In some examples, a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into a quantity of slots. Alternatively, each frame may include a variable quantity of slots, and the quantity of slots may depend on subcarrier spacing. Each slot may include a quantity of symbol periods (e.g., depending on the length of the cyclic prefix prepended to each symbol period). In some wireless communications systems 100, a slot may further be divided into multiple mini-slots associated with one or more symbols. Excluding the cyclic prefix, each symbol period may be associated with one or more (e.g., Nf) sampling periods. The duration of a symbol period may depend on the subcarrier spacing or frequency band of operation.

[0066] A subframe, a slot, a mini-slot, or a symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communications system 100 and may be referred to as a transmission time interval (TTI). In some examples, the TTI duration (e.g., a quantity' of symbol periods in a TTI) may be variable. Additionally, oralternatively, the smallest scheduling unit of the wireless communications system 100 may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs)).

[0067] Physical channels may be multiplexed for communication using a carrier according to various techniques. A physical control channel and a physical data channel may be multiplexed for signaling via a downlink carrier, for example, using one or more of time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques. A control region (e.g., a control resource set (CORESET)) for a physical control channel may be defined by a set of symbol periods and may extend across the system bandwidth or a subset of the system bandwidth of the carrier. One or more control regions (e.g., CORESETs) may be configured for a set of the UEs 115. For example, one or more of the UEs 115 may monitor or search control regions for control information according to one or more search space sets, and each search space set may include one or multiple control channel candidates in one or more aggregation levels arranged in a cascaded manner. An aggregation level for a control channel candidate may refer to an amount of control channel resources (e.g., control channel elements (CCEs)) associated with encoded information for a control information format having a given payload size. Search space sets may include common search space sets configured for sending control information to multiple UEs 115 and UE-specific search space sets for sending control information to a specific UE 115.

[0068] In some examples, a network entity 105 (e.g., a base station 140, an RU 170) may be movable and therefore provide communication coverage for a moving coverage area 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, the overlapping coverage areas 110 associated with different technologies may be supported by different network entities 105. The wireless communications system 100 may include, for example, a heterogeneous network in which different types of the network entities 105 provide coverage for various coverage areas 110 using the same or different radio access technologies.

[0069] The wireless communications system 100 may be configured to support ultra-reliable communications or low-latency communications, or various combinationsthereof. For example, the wireless communications system 100 may be configured to support ultra-reliable low-latency communications (URLLC). The UEs 115 may be designed to support ultra-reliable, low-latency, or critical functions. Ultra-reliable communications may include private communication 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 commercial applications. The terms ultra-reliable, low-latency, and ultra-reliable low-latency may be used interchangeably herein.

[0070] In some examples, a UE 115 may be configured to support communicating directly with other UEs 115 via a device-to-device (D2D) communication link 135 (e.g., in accordance with a peer-to-peer (P2P), D2D, or sidelink protocol). In some examples, one or more UEs 115 of a group that are performing D2D communications may be within the coverage area 110 of a network entity 105 (e.g., a base station 140, an RU 170), which may support aspects of such D2D communications being configured by (e.g., scheduled by) the network entity 105. In some examples, one or more UEs 115 of such a group may be outside the coverage area 110 of a network entity 105 or may be otherwise unable to or not configured to receive transmissions from a network entity 105. In some examples, groups of the UEs 115 communicating via D2D communications may support a one-to-many (1:M) system in which each UE 115 transmits to each of the other UEs 115 in the group. In some examples, a network entity7105 may facilitate the scheduling of resources for D2D communications. In some other examples, D2D communications may be carried out between the UEs 1 15 without an involvement of a network entity 105.

[0071] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity . and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or 5G core (5GC), which may include at least one control plane entity that manages access and mobility (e.g., a mobility7management entity (MME), an access and mobility management function (AMF)) and at least one user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW), a Packet Data Network (PDN) gateway (P-GW). or a user plane function (UPF)). The control planeentity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for the UEs 115 served by the network entities 105 (e.g., base stations 140) associated with the core network 130. User IP packets may be transferred through the user plane entity, which may provide IP address allocation as well as other functions. The user plane entity may be connected to IP services 150 for one or more network operators. The IP services 150 may include access to the Internet, Intranet(s), an IP Multimedia Subsystem (IMS), or a Packet-Switched Streaming Service.

[0072] The wireless communications system 100 may operate using one or more frequency bands, which may be in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Generally, the region from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from 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 the waves may penetrate structures sufficiently for a macro cell to provide service to the UEs 115 located indoors. Communications using UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) compared to communications using the smaller frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz.

[0073] The wireless communications system 100 may utilize both licensed and unlicensed RF spectrum bands. For example, the wireless communications system 100 may employ License Assisted Access (LAA), LTE-Unlicensed (LTE-U) radio access technology, or NR technology using an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band. While operating using unlicensed RF spectrum bands, devices such as the network entities 105 and the UEs 115 may employ carrier sensing for collision detection and avoidance. In some examples, operations using unlicensed bands may be based on a earner aggregation configuration in conjunction with component carriers operating using a licensed band (e.g., LAA). Operations using unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.

[0074] A network entity 105 (e g., a base station 140, an RU 170) or a UE 115 may be equipped with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity', multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of a network entity 105 or a UE 115 may be located within one or more antenna arrays or antenna panels, which may support MIMO operations 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, antennas or antenna arrays associated with a network entity 105 may be located at diverse geographic locations. A network entity' 105 may include an antenna array with a set of rows and columns of antenna ports that the network entity 105 may use to support beamforming of communications with a UE 115. Likewise, a UE 115 may include one or more antenna arrays that may support various MIMO or beamforming operations. Additionally, or alternatively, an antenna panel may support RF beamforming for a signal transmitted via an antenna port.

[0075] Beamforming, which may also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., a network entity 105, a UE 115) to shape or steer an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining the signals communicated via antenna elements of an antenna array such that some signals propagating along particular orientations with respect to an antenna array experience constructive interference while others experience destructive interference. The adjustment of signals communicated via the antenna elements may include a transmitting device or a receiving device applying amplitude offsets, phase offsets, or both to signals carried via the antenna elements associated with the device. The adjustments associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g.. with respect to the antenna array of the transmitting device or receiving device, or with respect to some other orientation).

[0076] The UEs 115 and the network entities 105 may support retransmissions of data to increase the likelihood that data is received successfully. Hybrid automatic repeat request (HARQ) feedback is one technique for increasing the likelihood that datais received correctly via a communication link (e g., a communication link 125, a D2D communication link 135). HARQ may include a combination of error detection (e.g., using a cyclic redundancy check (CRC)), forward error correction (FEC), and retransmission (e.g., automatic repeat request (ARQ)). HARQ may improve throughput at the MAC layer in poor radio conditions (e.g., low signal -to-noise conditions). In some examples, a device may support same-slot HARQ feedback, in which case the device may provide HARQ feedback in a specific slot for data received via a previous symbol in the slot. In some other examples, the device may provide HARQ feedback in a subsequent slot, or according to some other time interval.

[0077] A first wireless device (e.g., the UE 115, such as a smartphone or tablet) may communicate with a second wireless device (e.g., XR glasses) that implements one or more XR applications. In some cases, in order to be cost effective and useful to a user, the second wireless device may have reduced processing and power capabilities (e.g., to maintain battery life) as compared to those of the first wireless device, which may render the second wireless device unable to perform the processing associated with the XR applications. For example, when implementing XR applications, the second wireless device may experience an increase in power consumption and processing due to video encoding, video decoding, or video rendering, among other processes. In such cases, to reduce power consumption and processing, it may be beneficial for the second wireless device to offload (e.g., transfer) the processing of the XR applications to the first wireless device via sidelink communications. As such, techniques may be desired to enhance and make more reliable the sidelink communications in order to avoid data loss or data corruption during the sidelink communications.

[0078] The techniques described herein may enable the first wireless device, the second wireless device, or both, to transmit data (e.g., a video frame or image) using a combination of a digital representation of a portion of the data (e.g., a digital transmission) and an analog representation of a portion of the data (e.g., analog transmission). By using both digital and analog representations of the data, the wireless devices may achieve increased spectral efficiency in sidelink communications, thereby improving the reliability7of the sidelink communications, while also simplifying reception and decoding of the transmissions at the second wireless device.

[0079] For example, a wireless device (e.g., the first or second wireless device) may transmit, via a PSCCH, a sidelink control message (e.g., SCI) allocating sidelink resources for transmission of the data, where a first subset of the sidelink resources are allocated for transmission of the digital representation of a first portion of the data and a second subset of the sidelink resources are allocated for transmission of the analog representation of a residual portion of the data. In such examples, the wireless device may indicate, via the sidelink control message, at least a first quantity of sidelink resources allocated to the first subset and a second quantity of sidelink resources allocated to the second subset, where such quantities may be based on a ratio computed according to a quality metric (e.g., pSNR) of a digital representation the data and an SNR of a PSSCH.

[0080] In this way, as the quality metric of the digital representation of the data increases or the SNR of the PSSCH decreases, the quantity of resources allocated to the first subset of the sidelink resources may also increase. As such, the wireless device may allocate the sidelink resources in such a way as to maintain the quality of the data during transmission while also simplifying transmissions for the wireless device by using analog transmissions, thereby improving the reliability the sidelink transmission and or reducing processing and power consumption at the wireless device. In response to transmitting the sidelink control message, the wireless device may transmit, via the first subset of sidelink resources, a first signal that includes the digital representation of the first portion of the data and transmit, and via the second subset of sidelink resources, a second signal that includes the analog representation of the residual portion of the data.

[0081] FIG. 2 shows an example of a wireless communications system 200 that supports multiplexing analog and digital communications based on channel conditions in accordance w ith one or more aspects of the present disclosure. Aspects of the wireless communications system 200 may implement, or be implemented by. aspects of the wireless communications system 100 as described herein with reference to FIG. 1. The wireless communications system 200 may include a wireless device 205-a (e.g., a UE 115) and a wireless device 205-b (e.g., an XR device) that may communicate within a coverage area 110-a. The techniques described in the context of the wireless communications system 200 may enable the wireless device 205-a and the wirelessdevice 205-b to communicate data from a data source via both a digital signal and an analog signal. Although the wireless device 205-a (e.g., the UE 115) is illustrated and described as the transmitter of the data via both the digital stream and the analog stream, it should be understood that the wireless device 205-b (e.g.. the XR device) may implement the techniques described herein to transmit the data via both the digital signal and the analog signal. That is, the wireless device 205-b may be the transmitter of the data via both the digital and analog signals, while the wireless device 205-a may be the receiver of the data via both the digital and analog signals.

[0082] XR applications may be implemented as part of 6G wireless communications. For example, the wireless device 205-b (e.g., XR goggles or glasses) may operate one or more XR applications. To be cost effective and useful to a user, the wireless device 205-b may have reduced power consumption capabilities, be lighter weight, and have reduced processing capabilities as compared to the wireless device 205-a (e.g.. smartphone, tablet, or the like). In order to support the wireless device 205-b, the wireless device 205-b may offload processing of the XR applications to the wireless device 205-a. By partitioning the processing between the two wireless devices 205, the wireless device 205-b may function as an immersive audio-visual human interface, where the majority of the processing of the XR applications may be performed at the wireless device 205-a (e.g., companion device). To enable such offloading, the wireless devices 205 may implement techniques to decrease the video encoding, video decoding, video rendering latency, and processing overhead.

[0083] In some cases, the wireless device 205-a and the wireless device 205-b may communicate via one or more sidelink channels, such as a PSSCH for data and a PSCCH for control signaling. By offloading the processing of XR applications to the wireless device 205-a, the wireless device 205-a and the wireless device 205-b may have increased communications via such sidelink channels. As such, techniques may be desired to enhance and make more reliable the sidelink communications in order to avoid data loss or data corruption during the sidelink communications, while also maintaining, or reducing, processing and power consumption at the wireless device 205-b.

[0084] In accordance with the techniques described herein, the wireless device 205-a and the wireless device 205-b may split the sidelink communications (e.g..sidelink communications via a PSSCH) between a digital signal (e.g., as currently used in sidelink communication) and an analog signal. By doing so, the wireless devices 205 may improve the spectral efficiency of transmissions over the digital signal for communication of data associated with XR applications. Additionally, by implementing the analog signal, the wireless device 205-b may not experience an increase in power consumption and processing due to the simplicity of analog transmissions relative to the digital transmissions. Although such techniques may be illustrated and described as communication between the wireless device 205-a and the wireless device 205-b, the techniques described herein may also be implemented in broadcast communications, where the wireless device 205-a may be communicating with multiple XR devices.

[0085] As described herein, the terms a digital representation, digital signal, or digital transmission may refer to transmission of a signal that has been encoded and modulated to carry a digital bit stream (e.g., a series of logical ‘Ts and logical ‘0’s), and these terms may be used interchangeably throughout the specification. For example, a digital representation may be generated by digital encoding (e.g., linear block coding, convolutional coding) of a digital bit stream that includes redundancy information (e.g., parity bits) such that the original digital bit stream may be recovered in the presence of noise on a channel. The digital representation may be modulated onto the signal such that the amplitude, phase, or both of the signal may be varied to convey a series of bits (e.g., finite values) of the digital representation. Further, the terms an analog representation, analog signal, or analog transmission (which may be used interchangeably throughout the specification) refers to transmission of a signal that has not been digitally encoded (e.g., does not include redundancy information), where the amplitude, phase, or both of the signal may be varied continuously to convey a range of values. An analog representation may convey values of a digital bit stream. For example, a digital bit stream may be passed through a digital-to-analog converter (DAC) to generate an analog representation of the digital bit stream and may be modulated onto a signal for transmission.

[0086] In some examples, the wireless device 205-a may have data (e.g., a video frame or image) from a data source (e.g., a video) for transmission to the wireless device 205-b, where a first portion of the data is to be transmitted via a digital representation and a residual portion (e.g.. difference or delta portion) of the data is tobe transmited via an analog representation. To facilitate such mixed digital and analog communications, the wireless device 205-a may allocate sidelink resources that span a PSSCH into a first subset (for the transmission of the digital representation) and a second subset (for the transmission of the analog representation). To determine the allocation between the analog and digital representations, the wireless device 205-a may compute a ratio based on a quality metric (e.g., a pSNR, which may be the Euclidean distance between the original data at the wireless device 205-a and the reconstructed data at the wireless device 205-b) associated with the digital representation of the data and the SNR of the PSSCH.

[0087] For example, the wireless device 205-a may compute a scalar value (b) based on the quality metric of the digital representation (e.g., pSNR) and the SNR of the PSSCH according to equation 1:

[0088] Based on computing the scalar value, the wireless device 205-a may compute the ratio according to equation 2:

[0089] The wireless device 205-a may determine a first quantity of sidelink resources for the first subset of the sidelink resources and a second quantity of sidelink resources for the second subset of the sidelink resources based on the ratio. That is, a quantity7of sidelink resources allocated to each transmission may be based on channel conditions (e g., SNR) of the PSSCH and quality metric of the data. In such examples, the ratio may signify a split between the first quantity of sidelink resources and the second quantity of sidelink resources. As an illustrative example, if the scalar value is equal to 10 (e.g., b = 10), then the ratio may equal 0.9 or 90 percent (e.g., 9 / 10). As such, the wireless device 205-a may split the sidelink resources according to a 90 / 10 ratio, such that 90 percent of the sidelink resources are allocated for the first subset of the sidelink resources (e.g., transmission of the digital representation of the first portion of the data) and 10 percent are allocated for the second subset of the sidelink resources (e.g., transmission of the analog representation of the residual portion of the data). In this way, if the quality metric (e.g., pSNR) of the digital representation is high, thewireless device 205-a may allocate an increased quantity of sidelink resources for transmission of the digital representation in order to meet, or otherw ise satisfy, the quality metric.

[0090] Based on determining the quantity of sidelink resources for the first and second subsets, the wireless device 205-a may determine the symbols (e.g.. time symbols) and resource blocks (RBs) in a slot of the PSSCH for each of the first subset of the sidelink resources and the second subset of sidelink resources. For example, the wireless device 205-a may allocate symbols and RBs for the second subset of the sidelink resources based on a predefined ordered list or an SNR associated with each RB of the sidelink resources. The wireless device 205-a may allocate (e.g., split) the sidelink resources into the first and second subset according to techniques further described herein with reference to FIG. 4.

[0091] Based on determining the first subset of the sidelink resources and the second subset of the sidelink resources, the wireless device 205-a may transmit, via a PSCCH, a sidelink control message 210 (e.g., SCI) that indicates at least the first quantity of sidelink resources associated with the first subset and the second quantify of sidelink resources associated w ith the second subset. In some examples, the wireless device 205-a may also indicate, via the sidelink control message 210, a starting symbol for each subset, a quantity of consecutive symbols from the starting symbol for each subset, an RB for each subset that is allocated as a starting RB, a quantify of consecutive RBs from the starting RB for each subset, or the like. In some examples, the wireless device 205 may transmit, via the sidelink control message 210, an indication of the scalar value (b), such that the wireless device 305-b may calculate the ratio and determine the quantify of resources allocated to each subset of the sidelink resources. Such indications may be further described herein with reference to FIG. 4.

[0092] The wireless device 205-a may generate a first signal 215 for transmission of the digital representation of a first portion of the data and generate a second signal 220 for transmission of the analog representation of a residual portion of the data. For example, the wireless device 205-a may compress the data to generate the first portion of the data, encode and modulate the first portion of the data to generate the first signal 215 that includes the digital representation of the data. The wireless device 205-a maytransmit, via the first subset of the sidelink resources, the first signal 215 including the digital representation of the data.

[0093] Additionally, after compressing the data to generate the first portion of the data, the wireless device 205-a may decompress the first portion of the data and obtain the residual portion of the data based on subtracting the decompressed first portion of the data from the data. The wireless device 205-a may convert the residual portion of the data into the analog representation of the residual portion of the data using a DAC. Accordingly, the wireless device 205-a may transmit, via the second subset of the sidelink resources, the second signal 220 including the analog representation of the residual portion of the data.

[0094] The wireless device 205-b may receive the first signal 215, decode the first signal 215, and demodulate the first signal 215 to obtain the first portion of the data. Similarly, the wireless device 205-b may receive the second signal 220 and decode the second signal 220 to obtain the residual portion of the data. The wireless device 205-b may combine the first portion of the data and the residual portion of the data in order to obtain the data. Such encoding and decoding techniques may be further described herein with reference to FIG. 3. In some examples, the wireless device 305-b may transmit a feedback message 225. such as an HARQ ACK or HARQ NACK, indicating whether the first signal 215. the second signal 220. or both, were successfully received and decoded.

[0095] In this way, the wireless device 205-a and the wireless device 205-b may implement a mix of analog and digital transmissions in sidelink communications, thereby increasing reliability of the sidelink communications, while also maintaining, or reducing, power consumption and processing at the wireless device 205-b. That is. because analog decoding may be relatively simpler than digital transmissions, for example, by using scaling at the transmitter (e.g., the wireless device 205-a) and equalization at the receiver (e.g., the wireless device 205-b), the wireless devices 205 may utilize such mixed transmissions to simplify the processing and latency at both wireless devices 205. Additionally, by enabling the wireless device 205-a to split (e.g., allocate) the sidelink resources into two subsets, the second subset of the sidelink resources may be allocated in the slot (e.g., allocated in the last symbols of the slot), such that the digital transmission processing timeline may be reduced. In addition,multiplexing analog and digital transmissions to convey the data may more closely approach optimal data rate for a channel in the case of changing channel conditions. In addition, multiplexing analog and digital transmissions may provide better performance where the data may be broadcast to multiple devices, each with different channel conditions.

[0096] FIG. 3 shows an example of a system diagram 300 that supports multiplexing analog and digital communications based on channel conditions in accordance with one or more aspects of the present disclosure. Aspects of the system diagram may be implemented by aspects of the wireless communications system 100 and the wireless communications system 200 as described herein with reference to FIGs. 1 and 2. For example, the system diagram 300 may be implemented by a wireless device 305-a (e.g., the wireless device 205-a) and a wireless device 305-b (e.g., the wireless device 205-b). The techniques described in the context of the system diagram 300 may enable the wireless devices 305 to communicate data via both digital and analog signals during sidelink communications.

[0097] The wireless device 305-a may have data 301 to transmit to the wireless device 305-b, where the wireless device 305-a may transmit respective portions of the data 301 via digital and analog signals. In such examples, the data 301 may be an example of a video frame or an image, although other t pes of data are not precluded. Such data 301 may be quantized in a digital format having discrete values.

[0098] At 310, the wireless device 305-a may compress the data 301 according to a compression format to generate a first portion of the data 315, where such data compression may reduce the size of the data 301. For example, the wireless device 305-a may use a compression format on the data 301 that is considered lossy, such that after data compression is completed a portion of the data 301 is lost. In such examples, the wireless device 305-a may select the compression format (e.g., compression mode or degree of compression) from multiple compression formats based on the quality metric (e.g., pSNR) associated with the data, where the quality metric may represent the quantity of noise, a quantity of errors, or both introduced into the first portion of the data 301 after compression.

[0099] At 320, based on generating the first portion of the data 315, the wireless device 305-a may encode the first portion of the data 315 to account for noise and errors introduced by the channel. For example, the wireless device 305-a may encode the first portion of the data with a block code (e.g.. turbo code, low density parity check (LDPC) code, or the like).

[0100] At 325, the wireless device 305-a may modulate the first portion of the data 315 according to a modulation and coding scheme (MCS) and generate a first signal (e.g., the first signal 215) including a digital representation of the first portion of the data 330. For example, the wireless device 305-a may modulate the first portion of the data 315 with a quadrature amplitude modulation (QAM) scheme to generate the digital representation of the first portion of the data 330. Based on the modulating, the wireless device 305-a may generate the first signal according to an OFDM scheme, a single carrier-OFDM (SC-OFDM) scheme, or the like. In this way, the wireless device 305-a may generate the first signal including the digital representation of the first portion of the data 330, where the digital representation of the first portion of the data 330 may be an encoded bit sequence or bit stream indicating various bits of the first portion of the data 315.

[0101] In some examples, at 335, the wireless device 305-a may generate one or more pilot signals 340 (e.g., demodulation reference signals (DMRSs)) and add the pilot signals 340 to the first signal, such that the first signal includes the digital representation of the first portion of the data 330 and the one or more pilot signals 340. The wireless device 305-a may add the pilot signals 340 to the first signal, such that the wireless device 305-b may estimate the channel based on the pilot signals 340.

[0102] At 345. based on. or concurrently with, generating the digital representation of the first portion of the data 330, the wireless device 305-a may decompress the first portion of the data 315 and subtract the decompressed first portion of the data 315 from the data 301 to obtain the residual portion of the data 350. For example, because a portion of the data 301 was lost during compression (generating the first portion of the data 315), the wireless device 305-a may generate the residual portion of the data 350 for transmission to the wireless device 305-b. As such, the residual portion of the data 350 may be the delta (e.g., difference), between the data 301 and the first portion of the data 315.

[0103] At 355, in response to generating the residual portion of the data 350, the wireless device 305-a may convert, via the DAC, the residual portion of the data 350 into the analog representation of the residual portion of the data 360. For example, because the data 301 and the first portion of data 315 are represented in discrete values (e.g., digital form), the residual portion of the data 350 may also be represented by discrete values. As such, the wireless device 305-a may convert the discrete values of the residual portion of data 350 into analog values using the DAC, where the conversion may be based on a quantity of bits of the DAC. The wireless device 305-a may generate a second signal (e.g.. the second signal 220) including the analog representation of the residual portion of the data 360 based on the generated analog values.

[0104] In some examples, at 365, the wireless device 305-a may optionally filter the second signal to ensure compatibility7yvith the bandyvidth of the channel. For example, the wireless device 305-a may filter the second signal based on a bandwidth of the resources allocated for the analog transmission, a bandwidth of the resources allocated for the digital transmission, or both.

[0105] At 370, the wireless device 305-a may transmit, via respective resources of the channel (e.g., PSSCH), the first signal including the digital representation of the first portion of the data 330 and the second signal including the analog representation of the residual portion of the data 360. Additionally, the wireless device 305-a may transmit, via respective resources of the channel, the one or more pilot signals 340.

[0106] At 375, the wireless device 305-b may receive the pilot signals 340 and perform channel estimation to obtain a channel response of the channel, or the SNR of the channel, among other channel measurements. At 380, the wireless device 305-b may use such channel measurements to demodulate the first signal including the digital representation of the first portion of the data 330. For example, based on obtaining the channel response, the wireless device 305-b may equalize the first signal (e.g., remove the channel noise and distortion from the first signal), thereby enabling the wireless device 305-b to obtain the digital representation of the first portion of the data 330. At 385, based on demodulating the first signal, the wireless device 305-b may decode the first signal including the digital representation of the first portion of the data 330 to obtain the first portion of the data 315. In such examples, the wireless device 305-b maydecode the first signal using a block decoder (e.g., turbo or LDPC decoder). At 390, the wireless device 305-b may decompress the first portion of the data 315.

[0107] At 395, the wireless device 305-b may decode the second signal including the analog representation of the residual portion of the data 360 to obtain the residual portion of the data 350. For example, the wireless device 305-b may perform linear minimum mean squared equalization (LMMSE) on the second signal to obtain the residual portion of the data 350, where LMMSE may also be used for MIMO decoding for gaussian signals through gaussian charnels (if such schemes are used in broadcast).

[0108] In response to obtaining the first portion of the data 315 and the residual portion of the data 350, the wireless device 305-b may combine the first portion of the data 315 and the residual portion of the data 350 to obtain the data 301 . In this way, the wireless devices 305 may utilize both digital and analog signals for transmission of the data 301, thereby increasing the reliability of the sidelink communications, while also maintaining, or reducing, the processing and power consumption at the wireless device 305-b.

[0109] FIG. 4 shows examples of time slots 400 that support multiplexing analog and digital communications based on channel conditions in accordance with one or more aspects of the present disclosure. Aspects of the time slots 400 may be implemented by aspects of the wireless communications system 100, the wireless communications system 200, and the system diagram 300 as described herein with reference to FIGs. 1 through 3. The time slots 400 may be examples of time slots used by a wireless device (e.g., the wireless device 205-a) to transmit digital and analog representations of data.

[0110] The time slots 400 may include 14 symbols, where each symbol spans a quantity of RBs (e.g., a first bandwidth). The first symbol in the time slots 400 may be an automatic gain control (AGC) symbol 405. Additionally, in the time slots 400, a first quantity' of the RBs of symbols 2, 3, and 4 may be allocated for a PSCCH 410-a (e.g., a first part PSCCH), while a remaining quantity of RBs of symbols 2 and 3 may be allocated for transmission of a PSCCH 410-b (e.g., a second part PSCCH). Moreover, various RBs within symbol 5 and symbol 10 of the time slots 400 may be allocated forpilot signals 420. Additionally, symbol 14 of the time slots 400 may be allocated as a gap 425 between a subsequent time slot.[OHl] The wireless device may use the remaining slots and RBs of the time slots 400 for transmission of digital and analog portions of data via a PSSCH. For example, in accordance with the techniques described herein, the wireless device may have data to transmit, where the wireless device may split the data into a first portion of the data and a residual portion of the data. The wireless device may determine to transmit the first portion of the data via digital representation and generate a first signal including a digital representation of the first portion of the data in accordance with techniques described herein with reference to FIG. 3. Additionally, the wireless device may determine to transmit the residual portion of the data via analog representation and generate a second signal including an analog representation of the residual portion of the data in accordance with the techniques described herein with reference to FIG. 3.

[0112] The wireless device may transmit each of the first signal and the second signal via respective subsets of the remaining sidelink resources of the time slots 400, for example, sidelink resources 415-a (e.g., first subset) for the first signal and sidelink resources 415-b (e.g., second subset) for the second signal. To facilitate such communications, the wireless device may split the remaining sidelink resources of the time slots 400 into the sidelink resources 415-a and the sidehnk resources 415-b based on a ratio as described herein with reference to equation 2. For example, the wireless device may determine a first quantity of resources for the sidelink resources 415-a and a second quantity of resources for the sidelink resources 415-b based on the ratio, where the ratio is based on the SNR of the PSSCH and a quality metric (e.g., pSNR) associated with the digital representation of the data.

[0113] In such examples, based on identifying the first quantity of resources for the sidelink resources 415-a and the second quantity' of sidelink resources for the sidelink resources 415-b, the wireless device may allocate the symbols and RBs (e.g., the location) of the respective sidelink resources 415 within the time slots 400. As described herein, sidelink resources 415 may refer to symbols and RBs within a time slot 400 allocated for sidelink communications.

[0114] In some examples, the wireless device may allocate the remaining sidelink resources of the time slots 400 according to the time domain, such that one or more symbols of the time slots 400 are used for the first signal (e.g., digital modulation) while the remaining symbols are used for the second signal (e.g., analog representation). In such examples, the granularity for partitioning the time slots 400 may be 1 / 13.

[0115] As an illustrative example of such time domain allocation, with reference to time slot 400-a, the wireless device may determine that symbols 8 and 9 are to be used for the transmission of the second signal, while the remaining symbols of the time slot 400-a are to be used for the transmission of the first signal. As such, the wireless device may allocate the RBs of symbols 8 and 9 for the sidelink resources 415-b based on the determined second quantity of sidelink resources and allocate the remaining RBs and symbols to the sidelink resources 415-a according to the first quantity7of sidelink resources.

[0116] In some examples, the wireless device may allocate the remaining sidelink resources of the time slots 400 according to the frequency domain, such that a first quantity of RBs may' be used for the first signal (e.g., digital modulation) and a remaining quantity' of RBs may be used for the second signal (e.g., analog representation). As an illustrative example, with reference to time slot 400-b, the wireless device may determine that a first quantity’ of RBs that span a particular bandwidth are to be used for the sidelink resources 415-b. As such, the wireless device may allocate RBs of the symbol 6, 7, 8, and 9 that span the particular bandwidth for the sidelink resources 415-b based on the determined second quantity of sidelink resources.

[0117] In some examples, to achieve improved spectral efficiency in the transmissions, the wireless device may allocate the sidelink resources 415-b such that each RB within the sidelink resources 415-b has an SNR that is within a threshold SNR (e.g., the SNR is flat or the relatively the same across each RB). That is, the wireless device may allocate respective RBs and sy mbols to the sidelink resources 415-b based on the SNR for each RB being within a threshold SNR.

[0118] As an illustrative example, with reference to time slot 400-b, the wireless device may measure the RBs across symbols 4 through 13 and determine that each of the measured SNRs across a first subset of RBs of symbols 6, 7, 8, and 9 are within theSNR threshold. As such, the wireless device may allocate the first subset of RBs across the symbols 6, 7, 8, and 9 for the sidelink resources 415-b based on the determined second quantity of sidelink resources and allocate the remaining RBs and symbols for the sidelink resources 415-a.

[0119] In some examples, the wireless device may allocate the sidelink resources 415-b based on a predefined rule. In one example, the wireless device may allocate the sidelink resources 415-b based on an ordered list of symbols, an ordered list of RBs, or both. As an illustrative example, an ordered list of symbols may be defined such that symbols 6, 8. 10. and 12 are to be used as starting symbols for the sidelink resources 415-b. As such, the wireless device may allocate a quantity of symbols, starting in one of the symbols from the ordered list and continuing for the second quantity of sidelink resources identified for the sidelink resources 415-b. For example, a sidelink control message may include a starting symbol index of 1 that may indicate that the allocation starts at the first symbol of the ordered list (e.g.. symbol 6). and include a second value that may indicate a quantity of symbols for the sidelink resources 415-b.

[0120] As another illustrative example, an ordered list of RBs may be defined such that the indication for the sidelink resources 415-b may indicate the frequency resources by way of an index to the ordered list of RBs. The ordered list may include values of starting RBs. or may include sets of RBs. For example, where the ordered list includes starting RBs, an index value to the starting RB may be used to indicate the starting RB of the allocation, while another value may indicate the quantity of RBs in the allocation. Where the ordered list includes sets of RBs, the RBs may be indicated using one or more values (e.g., a single value indicating a quantity of resources, a bitmap selecting one or more sets of RBs) indicating which sets of RBs are used for the allocation. As such, the wireless device may allocate a quantity of RBs based on a starting symbol and quantity of RBs, or based on indicated which sets of RBs are allocated for the sidelink resources 415-b.

[0121] In some examples, the wireless device may allocate the sidelink resources 415-b based on an ordered list, where the ordered list is a function of the slot format parameters (e.g., whether other channels, such as CSI-RS, exist, a quantity of pilot signals, or the like). For example, the wireless device may have an indication of which symbols and RBs a CSI-RS may be transmitted on, and therefore adjust the ordered listto exclude such symbols and RBs. Additionally, the wireless device may have an indication of a quantity of pilot signals 420 are to be transmitted and may adjust the ordered list accordingly to exclude such symbols and RBs.

[0122] Based on allocating the sidelink resources 415-a and the sidelink resources 415-b, the wireless device may transmit, via the resources of the PSCCH 410-a, the PSCCH 410-b, or both, a sidelink control message (e.g., the sidelink control message 210) indicating at least the first quantity of resources allocated to the sidelink resources 415-a and the second quantity of resources allocated to the sidelink resources 415-b.

[0123] In one example, if the wireless device allocated the sidelink resources 415 according to a predefined rule (e.g., ordered list), then the receiving wireless device (e.g., wireless device 205-b) may be able to implicitly determine the resource allocation based on the ordered list and the quantities of the sidelink resources indicated via the sidelink control message. That is, if the predefined rule is an ordered list of symbols and the receiving wireless device has an indication of the second quantity of sidelink resources of the sidelink resources 415-b, then the receiving wireless device may be able to implicitly determine the resource allocation based on both the ordered list of symbols and the second quantity of sidelink resources.

[0124] Alternatively, the wireless device may explicitly indicate the resource allocation via the sidelink control message. For example, the wireless device may indicate, via the sidelink control message, a starting symbol within the time slots 400 for each of the sidelink resources 415, a starting RB for each of the sidelink resources 415, a quantity of consecutive symbols from the starting symbol, a quantity of RBs from the starting RB, or combinations thereof. Additionally, the wireless device may indicate multiple starting symbols and multiple starting RBs if the resources are split over multiple symbols and RBs of the time slots 400.

[0125] As an illustrative example, with reference to the time slot 400-a, the wireless device may indicate, via the sidelink control message, that symbol 8 is the starting symbol for the sidelink resources 415-b. Additionally, the wireless device may indicate a quantity of consecutive symbols (e.g., 2) for the sidelink resources 415-b. In some cases, an absence of indicating a starting RB may indicate that all RBs of a sidelink allocation or subchannel may be used for sidelink resources 415-b. Alternatively, thewireless device may indicate a starting RB and a quantity of consecutive RBs from the starting RB, such that the receiving wireless device may have an indication that the sidelink resources 415-b span the RBs of symbol 8 and symbol 9.

[0126] In some examples, the wireless device may indicate, via the sidelink control message, multiple starting symbols and multiple starting RBs for the sidelink resources 415-a or the sidelink resources 415-b. For example, with reference to time slot 400-a, the wireless device may indicate that an nthRB and the symbol 4 are allocated as a first starting RB and the first starting symbol for the sidelink resources 415-a. Additionally, the wireless device may indicate a quantity of consecutive RBs from the nthRB and a quantity of consecutive symbols (e.g., 0) from the symbol 4 for the sidelink resources 415-b. Because the sidelink resources 415-a are split over the time slot 400-a, the wireless device may indicate additional starting RBs, starting symbols, quantity of consecutive RBs, and quantity of consecutive symbols.

[0127] In some cases, the locations of reference signals (e.g., pilot signals 420) may puncture the sidelink resources 415-a or 415-b. For example, the wireless device may indicate that pilot signals 420 puncture every other RB of symbol 5, starting from the first RB.

[0128] FIG. 5 shows an example of a process flow 500 that supports multiplexing analog and digital communications based on channel conditions in accordance with one or more aspects of the present disclosure. Aspects of the process flow 500 may implement, or be implemented by, aspects of the wireless communications system 100, the wireless communications system 200, the system diagram 300, and the time slots 400 as described herein with reference to FIGs. 1 through 4. The process flow 500 may include a wireless device 505-a (e.g., the wireless device 205-a) and a wireless device 505-b (e.g., the wireless device 205-b). The techniques described in the context of the process flow 500 may enable the wireless devices 505 to communicate both digital and analog representations of data via sidelink channels.

[0129] At 510, the wireless device 505-a may communicate, via a PSCCH, a sidelink control message allocating sidelink resources for transmission of data associated with a data source (e g., data 301, an image, or video frame). In such examples, the w ireless device 505-a may indicate, via the sidelink control message, atleast a first quantity of sidelink resources allocated for transmission of a digital representation of a first portion of the data and a second quantity of the sidelink resources allocated for transmission of an analog representation of a residual portion of the data. In such examples, the wireless device may determine the first quantity of sidelink resources and the second quantity of sidelink resources based on a ratio, where the ratio is according to equation 2 as described herein with reference to FIG. 2.

[0130] In some examples, the wireless device 505-a may transmit, via the sidelink control message, a scalar value (e.g.. b) associated with the ratio, such that the wireless device 505-b may compute the ratio and obtain the first quantity of sidelink resources and the second quantity of sidelink resources.

[0131] In some examples, the wireless device 505-a may explicitly indicate the location of a first subset of the sidelink resources for transmission of the digital representation and a second subset of sidelink resources for transmission of the analog representation within the sidelink resources to the wireless device 505-b. For example, the wireless device 505-a may communicate, via the sidelink control message, an indication of a symbol of the sidelink resources allocated as a starting symbol of the first subset of the sidelink resources, a quantity of consecutive symbols from the starting symbol allocated to the first subset of the sidelink resources, a RB of the sidelink resources allocated as a starting RB of the first subset of the sidelink resources, or a quantity of consecutive RBs from the starting RB allocated to the first subset of the sidelink resources as described herein with reference to FIG. 4.

[0132] Similarly, the wireless device 505-a may communicate, via the sidelink control message, an indication of a symbol of the sidelink resources allocated as a starting symbol of the second subset of the sidelink resources, a quantity of consecutive symbols from the starting symbol allocated to the second subset of the sidelink resources, a RB of the sidelink resources allocated as a starting RB of the second subset of the sidelink resources, or a quantity of consecutive RBs from the starting RB allocated to the second subset of the sidelink resources as described herein with reference to FIG. 4.

[0133] Alternatively, the wireless device 505-b may implicitly determine the location of the first and second subsets within the sidelink resources based on apredefined rule and the first and second quantities indicated via the sidelink control message. For example, the wireless device 505-a may allocate the second subset of sidelink resources based on an ordered list of symbols of the sidelink resources or an ordered list of RBs of the sidelink resources as described herein with reference to FIG. 4.

[0134] At 515, the wireless device 505-a may generate a digital representation of the first portion of the data in accordance with the techniques described herein with reference to FIG. 3. For example, the wireless device 505-a may compress the data of the data source according to a first compression format to generate the first portion of the data. In such examples, the wireless device 505-a may select the first compression format based on the quality metric of the digital representation of the data, the SNR of the PSSCH, or both. Based on compressing, the wireless device 505-a may encode and modulate the first portion of the data to generate the digital representation of the first portion of the data, wherein transmitting the first signal is based on the modulating.

[0135] At 520, the wireless device 505-a may generate an analog representation of the residual portion of the data in accordance with the techniques described herein with reference to FIG. 3. For example, the wireless device 505-a may decompress the first portion of the data, where the residual portion of the data may be a difference between the data of the data source and the decompressed first portion of the data. The wireless device 505-a may convert, via a DAC, the residual portion of the data into the analog representation of the residual portion of the data.

[0136] At 525, the wireless device 505-a may transmit, via the first subset of the sidelink resources, a first signal that includes the digital representation of the first portion of the data. Similarly, at 530, the wireless device 505-a may transmit, via the second subset of the sidelink resources, a second signal that includes the analog representation of the residual portion of the data. In response to receiving the first and second signal, the wireless device 505-b may perform channel estimations based on pilot signals received via the PSSCH.

[0137] At 535. the wireless device 505-b may obtain the first portion of the data in accordance with the techniques described herein with reference to FIG. 3. For example, the wireless device 505-b may demodulate the first signal to obtain the digitalrepresentation of the first portion of the data, decode the digital representation of the first portion of the data to obtain the first portion of the data, and decompress the first portion of the data.

[0138] At 540, the wireless device 505-b may obtain the residual portion of the data in accordance with the techniques described herein with reference to FIG. 3. For example, the wireless device 505-b may decode, based on the channel estimations, the analog representation of the residual portion of the data to obtain the residual portion of the data. Such decoding may be an example of LMSSE as described herein with reference to FIG. 3. At 545, based on obtaining the first portion and the residual portion of the data, the wireless device 505-b may combine the first portion of the data and the residual portion of the data to obtain the data associated with the data source.

[0139] FIG. 6 shows a block diagram 600 of a device 605 that supports multiplexing analog and digital communications based on channel conditions in accordance with one or more aspects of the present disclosure. The device 605 may be an example of aspects of a UE 115 as described herein. The device 605 may include a receiver 610, a transmitter 615, and a communications manager 620. The device 605, or one or more components of the device 605 (e.g., the receiver 610, the transmitter 615, and the communications manager 620), may include at least one processor, which may be coupled with at least one memory, to. individually or collectively, support or enable the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses).

[0140] The receiver 610 may provide a means 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 multiplexing analog and digital communications based on channel conditions). Information may be passed on to other components of the device 605. The receiver 610 may utilize a single antenna or a set of multiple antennas.

[0141] The transmitter 615 may provide a means for transmitting signals generated by other components of the device 605. For example, the transmitter 615 may transmit 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 multiplexing analog and digital communications based on channel conditions). In some examples, the transmitter 615 may be co-located with a receiver 610 in a transceiver module. The transmitter 615 may utilize a single antenna or a set of multiple antennas.

[0142] The communications manager 620, the receiver 610, the transmitter 615, or various combinations thereof or various components thereof may be examples of means for performing various aspects of multiplexing analog and digital communications based on channel conditions as described herein. For example, the communications manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may be capable of performing one or more of the functions described herein.

[0143] In some examples, the communications manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry). The hardware may include at least one of a processor, a digital signal processor (DSP), a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure. In some examples, at least one processor and at least one memory coupled with the at least one processor may be configured to perform one or more of the functions described herein (e.g.. by one or more processors, individually or collectively, executing instructions stored in the at least one memory).

[0144] Additionally, or alternatively, the communications manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may be implemented in code (e.g., as communications management software or firmware) executed by at least one processor. If implemented in code executed by at least one processor, the functions of the communications manager 620. the receiver 610. the transmitter 615, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., configured as orotherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure).

[0145] In some examples, the communications manager 620 may be configured to perform various operations (e.g.. receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 610. the transmitter 615, or both. For example, the communications manager 620 may receive information from the receiver 610, send information to the transmitter 615, or be integrated in combination with the receiver 610, the transmitter 615, or both to obtain information, output information, or perform various other operations as described herein.

[0146] The communications manager 620 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 620 is capable of, configured to, or operable to support a means for communicating, via a PSCCH, a sidelink control message allocating sidelink resources for transmission of data associated with a data source, a first subset of the sidelink resources being allocated for transmission of a digital representation of a first portion of the data and a second subset of the sidelink resources being allocated for transmission of an analog representation of a residual portion of the data, where a first quantity of sidelink resources allocated to the first subset of the sidelink resources and a second quantity of sidelink resources allocated to the second subset of the sidelink resources are based on a ratio, and where the ratio is computed based on a quality7metric of the digital representation of the data and a SNR of a PSSCH. The communications manager 620 is capable of, configured to, or operable to support a means for transmitting, via the first subset of the sidelink resources, a first signal including the digital representation of the first portion of the data. The communications manager 620 is capable of, configured to, or operable to support a means for transmitting, via the second subset of the sidelink resources, a second signal including the analog representation of the residual portion of the data.

[0147] Additionally, or alternatively, the communications manager 620 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 620 is capable of, configured to, or operable to support a means for receiving, via a PSCCH, a sidelink control message allocating sidelink resources for transmission of data associated with a data source, a first subset ofthe sidelink resources being allocated for transmission of a digital representation of a first portion of the data and a second subset of the sidelink resources being allocated for transmission of an analog representation of a residual portion of the data, where a first quantity of sidelink resources allocated to the first subset of the sidelink resources and a second quantity of sidelink resources allocated to the second subset of the sidelink resources are based on a ratio, and where the ratio is computed based on a uality metric of the digital representation of the data and a SNR of a PSSCH;. The communications manager 620 is capable of. configured to, or operable to support a means for receiving, via the first subset of the sidelink resources, a first signal including the digital representation of the first portion of the data. The communications manager 620 is capable of, configured to, or operable to support a means for receiving, via the second subset of the sidelink resources, a second signal including the analog representation of the residual portion of the data.

[0148] By including or configuring the communications manager 620 in accordance with examples as described herein, the device 605 (e.g., at least one processor controlling or otherwise coupled with the receiver 610, the transmitter 615, the communications manager 620. or a combination thereof) may support techniques for splitting sidelink (e.g., XR) communications into analog and digital signals, thereby reducing processing power, reducing power consumption, and providing for more efficient utilization of communication resources.

[0149] FIG. 7 shows a block diagram 700 of a device 705 that supports multiplexing analog and digital communications based on channel conditions in accordance with one or more aspects of the present disclosure. The device 705 may be an example of aspects of a device 605 or a UE 1 15 as described herein. The device 705 may include a receiver 710, a transmitter 715, and a communications manager 720. The device 705. or one or more components of the device 705 (e.g., the receiver 710, the transmitter 715, and the communications manager 720). may include at least one processor, which may be coupled with at least one memory, to support the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses).

[0150] The receiver 710 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated withvarious information channels (e.g., control channels, data channels, information channels related to multiplexing analog and digital communications based on channel conditions). Information may be passed on to other components of the device 705. The receiver 710 may utilize a single antenna or a set of multiple antennas.

[0151] The transmitter 715 may provide a means for transmitting signals generated by other components of the device 705. For example, the transmitter 715 may transmit 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 multiplexing analog and digital communications based on channel conditions). In some examples, the transmitter 715 may be co-located with a receiver 710 in a transceiver module. The transmitter 715 may utilize a single antenna or a set of multiple antennas.

[0152] The device 705, or various components thereof, may be an example of means for performing various aspects of multiplexing analog and digital communications based on channel conditions as described herein. For example, the communications manager 720 may include a sidelink control messaging component 725, a digital signal component 730, an analog signal component 735, or any combination thereof. The communications manager 720 may be an example of aspects of a communications manager 620 as described herein. In some examples, the communications manager 720, or various components thereof, may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 710, the transmitter 715, or both. For example, the communications manager 720 may receive information from the receiver 710, send information to the transmitter 715, or be integrated in combination with the receiver 710, the transmitter 715, or both to obtain information, output information, or perform various other operations as described herein.

[0153] For example, the receiver 710 may receive one or more signals relating to digital and analog streams for sidelink communications. In some examples, the receiver may receive a sidelink control message 740-a and indicate the received sidelink control message 740-a to the sidelink control messaging component 725. Based on receiving the sidelink control message 740-a, the receiver 710 may also receive, via a first subset of sidelink resources a first signal 745-a including a digital representation of a firstportion of data, where the receiver 710 may forward the first signal 745-a to the digital signal component 730 for processing. Further, the receiver 710 may also receive, via a second subset of the sidelink resources, a second signal including an analog representation of a residual portion of the data, where the receiver 710 may forward the second signal 750-a to the analog signal component for processing.

[0154] Further, the sidelink control messaging component 725 may be configured to identify, or otherwise allocate, sidelink resources for transmission of the data associated with the data source. For example, the sidelink control messaging component may identify a first subset of the sidelink resources for transmission of a digital representation of a first portion of the data and a second subset of the sidelink resources or transmission of an analog representation of a residual portion of the data. In such examples, the sidelink control messaging component 725 may generate a sidelink control message 740-b allocating the identified first and second subsets of the sidelink resources and indicate the sidelink control message 740-b, as well as resources for the transmission of the sidelink control message 740-b to the transmitter 715. The transmitter 715 may then transmit the sidelink control message 740-b via the resources.

[0155] In some examples, the digital signal component 730 may generate a digital representation of the first portion of the data and generate a first signal 745-b for transmission of the digital representation. In such examples, the digital signal component 730 may indicate the first signal 745-b to the transmitter 715, where the transmitter 715 may transmit the first signal 745-b via the first subset of sidelink resources identified in the sidelink control message 740-b received from the sidelink control messaging component 725. Likewise, the analog signal component 735 may generate an analog representation of a residual portion of the data and generate a second signal 750-b for transmission of the analog representation. In such examples, the analog signal component 735 may indicate the second signal 750-b to the transmitter 715, where the transmitter 715 may transmit the second signal 750-b via the second subset of sidelink resources identified in the sidelink control message 740-b received from the sidelink control messaging component 725.

[0156] The communications manager 720 may support wireless communications in accordance with examples as disclosed herein. The sidelink control messaging component 725 is capable of, configured to, or operable to support a means forcommunicating, via a PSCCH, a sidelink control message allocating sidelink resources for transmission of data associated with a data source, a first subset of the sidelink resources being allocated for transmission of a digital representation of a first portion of the data and a second subset of the sidelink resources being allocated for transmission of an analog representation of a residual portion of the data, where a first quantity of sidelink resources allocated to the first subset of the sidelink resources and a second quantity' of sidelink resources allocated to the second subset of the sidelink resources are based on a ratio, and where the ratio is computed based on a quality metric of the digital representation of the data and a SNR of a PSSCH. The digital signal component 730 is capable of, configured to, or operable to support a means for transmitting, via the first subset of the sidelink resources, a first signal including the digital representation of the first portion of the data. The analog signal component 735 is capable of, configured to, or operable to support a means for transmitting, via the second subset of the sidelink resources, a second signal including the analog representation of the residual portion of the data.

[0157] Additionally, or alternatively, the communications manager 720 may support wireless communications in accordance with examples as disclosed herein. The sidelink control messaging component 725 is capable of. configured to, or operable to support a means for receiving, via a PSCCH, a sidelink control message allocating sidelink resources for transmission of data associated with a data source, a first subset of the sidelink resources being allocated for transmission of a digital representation of a first portion of the data and a second subset of the sidelink resources being allocated for transmission of an analog representation of a residual portion of the data, where a first quantity of sidelink resources allocated to the first subset of the sidelink resources and a second quantity of sidelink resources allocated to the second subset of the sidelink resources are based on a ratio, and where the ratio is computed based on a quality metric of the digital representation of the data and a SNR of a PSSCH;. The digital signal component 730 is capable of, configured to, or operable to support a means for receiving, via the first subset of the sidelink resources, a first signal including the digital representation of the first portion of the data. The analog signal component 735 is capable of, configured to, or operable to support a means for receiving, via the secondsubset of the sidelink resources, a second signal including the analog representation of the residual portion of the data.

[0158] FIG. 8A and FIG. 8B show a block diagram 800 and a block diagram 801 of a communications manager 820-a and a communications manager 820-b, respectively, that support multiplexing analog and digital communications based on channel conditions in accordance with one or more aspects of the present disclosure.

[0159] The communications manager 820-a and the communications manager 820-b may be an example of aspects of a communications manager 620, a communications manager 720, or both, as described herein. The communications manager 820-a and the communications manager 820-b, or various components thereof, may be an example of means for performing various aspects of multiplexing analog and digital communications based on channel conditions as described herein. The communications manager 820-a may be an example of a communications manager implemented into a wireless device 205-a, while the communications manager 820-b may be an example of a communications manager implemented into the wireless device 205-b as described herein with reference to FIG. 2. Although shown as different communications managers 820, it should be understood that both the communications managers 820 may be implemented into the wireless device 205-a, the wireless device 205-b, or both.

[0160] For example, with respect to FIG. 8A, the communications manager 820-a may include a sidelink control messaging component 825-a, a data compression component 830, a channel coding component 835, a modulation component 840, a digital signal component 845-a, a data decompression component 850-a, an analog signal component 855-a, or any combination of such components. Each of these components, or components or subcomponents thereof (e.g., one or more processors, one or more memories), may communicate, directly or indirectly, with one another (e g., via one or more buses).

[0161] The communications manager 820-a may support wireless communications in accordance with examples as disclosed herein. The sidelink control messaging component 825-a is capable of, configured to. or operable to support a means for communicating, via a PSCCH, a sidelink control message 826 allocating sidelink resources for transmission of data 827 associated with a data source, a first subset of thesidelink resources being allocated for transmission of a digital representation of a first portion of the data 841 and a second subset of the sidelink resources being allocated for transmission of an analog representation of a residual portion of the data 856, where a first quantity of sidelink resources allocated to the first subset of the sidelink resources and a second quantity of sidelink resources allocated to the second subset of the sidelink resources are based on a ratio, and where the ratio is computed based on a uality metric of the digital representation of the data 841 and a SNR of a PSSCH.

[0162] The digital signal component 845 -a is capable of, configured to, or operable to support a means for transmitting, via the first subset of the sidelink resources, a first signal including the digital representation of the first portion of the data 841. The analog signal component 855-a is capable of, configured to, or operable to support a means for transmitting, via the second subset of the sidelink resources, a second signal including the analog representation of the residual portion of the data 856.

[0163] In some examples, the data compression component 830 is capable of, configured to, or operable to support a means for compressing the data 827 of the data source according to a first compression format to generate the first portion of the data 831, where the first compression format is based on the quality metric of the digital representation of the data 827, the SNR of the PSSCH, or a combination thereof. Based on generating the first portion of the data 831. the data compression component 830 may transmit the first portion of the data 831 to the data decompression component 850-a and the channel coding component 835, or both as described herein with reference to FIG. 3.

[0164] In some examples, the channel coding component 835 is capable of, configured to, or operable to support a means for encoding the first portion of the data 831. Such encoding may be performed in response to receiving the first portion of the data 831 from the data compression component 830. Based on encoding the first portion of the data 831, the channel coding component 835 may transmit the encoded first portion of the data 831 to the modulation component 840. In some examples, the modulation component 840 is capable of, configured to, or operable to support a means for modulating, based on the encoding, the first portion of the data 831 to generate the digital representation of the first portion of the data 841, where transmitting the first signal is based on the modulating. Based on generating the digital representation of thefirst portion of the data 841 , the modulation component 840 may transmit the digital representation of the first portion of the data 841 to the digital signal component 845 -a, where the digital signal component 845 -a may transmit the first signal including the digital representation of the first portion of the data 841.

[0165] In some examples, the data decompression component 850-a is capable of, configured to, or operable to support a means for decompressing, based on compressing the data 827 of the data source, the first portion of the data 831, where the residual portion of the data 851 includes a difference between the data 827 of the data source and the decompressed first portion of the data 831. For example, the data decompression component 850-a, may receive the first portion of the data 831.

[0166] In some examples, analog signal component 855-a is capable of, configured to, or operable to support a means for converting, via a DAC, the residual portion of the data 851 into the analog representation of the residual portion of the data 856 using a DAC, where transmitting the second signal is based on the converting. For example, the analog signal component 855-a may receive the residual portion of the data 851 from the data decompression component 850-a and convert the residual portion of the data 851 into the analog representation of the residual portion of the data 856.

[0167] In some examples, analog signal component 855-a is capable of, configured to, or operable to support a means for filtering the second signal including the analog representation of the residual portion of the data 856 based on a bandwidth associated with the second subset of the sidelink resources, a bandwidth of the first subset of the sidelink resources, or a combination thereof. For example, the analog signal component 855-a may apply a filter, such as a Fourier transform filter, among other types to the analog representation of the residual portion of the data.

[0168] In some examples, the sidelink control messaging component 825-a is capable of, configured to, or operable to support a means for communicating, via the sidelink control message 826, an indication of a symbol of the sidelink resources allocated as a starting symbol of the first subset of the sidelink resources, a quantity of consecutive symbols from the starting symbol allocated to the first subset of the sidelink resources, a RB of the sidelink resources allocated as a starting RB of the first subset ofthe sidelink resources, a quantity of consecutive RBs from the starting RB allocated to the first subset of the sidelink resources, or a combination thereof.

[0169] In some examples, the sidelink control messaging component 825-a is capable of, configured to, or operable to support a means for communicating, via the sidelink control message 826, an indication of a symbol of the sidelink resources allocated as a starting symbol of the second subset of the sidelink resources, a quantity of consecutive symbols from the starting symbol allocated to the second subset of the sidelink resources, a RB of the sidelink resources allocated as a starting RB of the second subset of the sidelink resources, a quantity of consecutive RBs from the starting RB allocated to the second subset of the sidelink resources, or a combination thereof.

[0170] In some examples, the sidelink control messaging component 825-a is capable of, configured to, or operable to support a means for transmitting, via the sidelink control message 826, a scalar value associated with the ratio, where the scalar value is based on the quality metric of the digital representation of the data 827 and the SNR of the PSSCH.

[0171] In some examples, the ratio includes a quotient of a difference between the scalar value and one and the scalar value.

[0172] In some examples, the second subset of the sidelink resources are allocated for the transmission of the analog representation of the residual portion of the data 856 based on the SNR of each sidelink resource of the second subset of the sidelink resources being within a threshold.

[0173] In some examples, the second subset of the sidelink resources are allocated for the transmission of the analog representation of the residual portion of the data 856 based on an ordered list of symbols of the sidelink resources, an ordered list of RBs of the sidelink resources, or a combination thereof.

[0174] In some examples, the second subset of the sidelink resources are allocated for the transmission of the analog representation of the residual portion of the data 856 based on an ordered list of sidelink resources, and the ordered list of sidelink resources is based on a slot format of the PSSCH.

[0175] Additionally, or alternatively with respect to FIG. 8B, the communications manager 820-b may include a sidelink control messaging component 825-b, a digital signal component 845-b, a data decompression component 850-b. an analog signal component 855-b, a demodulation component 860, a channel decoding component 870, an analog decoding component 875, a data combination component 880, any combination of such components. Each of these components, or components or subcomponents thereof (e.g., one or more processors, one or more memories), may communicate, directly or indirectly, with one another (e.g., via one or more buses).

[0176] In some examples, the sidelink control messaging component 825-b is capable of, configured to, or operable to support a means for receiving, via a PSCCH, a sidelink control message 826 allocating sidelink resources for transmission of data 827 associated w ith a data source, a first subset of the sidelink resources being allocated for transmission of a digital representation of a first portion of the data 841 and a second subset of the sidelink resources being allocated for transmission of an analog representation of a residual portion of the data 856, where a first quantity of sidelink resources allocated to the first subset of the sidelink resources and a second quantity of sidelink resources allocated to the second subset of the sidelink resources are based on a ratio, and where the ratio is computed based on a quality metric of the digital representation of the data 827 and a SNR of a PSSCH. In some examples, the digital signal component 845-b is capable of, configured to, or operable to support a means for receiving, via the first subset of the sidelink resources, a first signal including the digital representation of the first portion of the data 841. In some examples, the analog signal component 855-b is capable of, configured to, or operable to support a means for receiving, via the second subset of the sidelink resources, a second signal including the analog representation of the residual portion of the data 856.

[0177] In some examples, the communications manager 820-b is capable of, configured to, or operable to support a means for performing channel estimations of the PSSCH based on one or more pilot signals transmitted via the PSSCH.

[0178] In some examples, the demodulation component 860 is capable of, configured to, or operable to support a means for demodulating, based on the channel estimations, the first signal to obtain the digital representation of the first portion of the data 841. Based on demodulating, the demodulation component 860 may indicate thedigital representation of the first portion of the data 841 to the channel decoding component 870. In some examples, the channel decoding component 870 is capable of, configured to, or operable to support a means for decoding, based on the demodulating, the digital representation of the first portion of the data 841 to obtain the first portion of the data 831. The channel decoding component 870 may indicate the first portion of the data 831 to the data decompression component 850-b.

[0179] In some examples, the data decompression component 850-b is capable of, configured to, or operable to support a means for decompressing the first portion of the data 831. Upon decompressing the first portion of the data 831, the data decompression component 850-b may indicate the first portion of the data 831 to the data combination component 880.

[0180] In some examples, the analog decoding component 875 is capable of, configured to, or operable to support a means for decoding, based on the channel estimations, the analog representation of the residual portion of the data 856 to obtain the residual portion of the data 851, where the analog decoding component 875 may receive the analog representation of the residual portion of the data 856 from the analog signal component 855-b. Based on obtaining the residual portion of the data 851, the analog decoding component 875 may indicate the residual portion of the data 851 to the data combination component 880. In some examples, the data combination component 880 is capable of, configured to, or operable to support a means for combining the first portion of the data 831 and the residual portion of the data 851 to obtain the data 827 associated with the data source.

[0181] In some examples, the sidelink control messaging component 825-b is capable of. configured to, or operable to support a means for communicating, via the sidelink control message 826, an indication of a symbol of the sidelink resources allocated as a starting symbol of the first subset of the sidelink resources, a quantity of consecutive symbols from the starting symbol allocated to the first subset of the sidelink resources, a RB of the sidelink resources allocated as a starting RB of the first subset of the sidelink resources, a quantity of consecutive RBs from the starting RB allocated to the first subset of the sidelink resources, or a combination thereof.

[0182] In some examples, the sidelink control messaging component 825-b is capable of, configured to, or operable to support a means for communicating, via the sidelink control message 826, an indication of a symbol of the sidelink resources allocated as a starting symbol of the second subset of the sidelink resources, a quantity of consecutive symbols from the starting symbol allocated to the second subset of the sidelink resources, a RB of the sidelink resources allocated as a starting RB of the second subset of the sidelink resources, a quantity of consecutive RBs from the starting RB allocated to the second subset of the sidelink resources, or a combination thereof.

[0183] In some examples, the sidelink control messaging component 825-b is capable of, configured to, or operable to support a means for receiving, via the sidelink control message 826, a scalar value associated with the ratio, where the scalar value is based on the quality metric of the digital representation of the data 827 and the SNR of the PSSCH.

[0184] In some examples, the ratio includes a quotient of a difference between the scalar value and one and the scalar value.

[0185] In some examples, the second subset of the sidelink resources are allocated for the transmission of the analog representation of the residual portion of the data 856 based on the SNR of each sidelink resource of the second subset of the sidelink resources being within a threshold.

[0186] In some examples, the second subset of the sidelink resources are allocated for the transmission of the analog representation of the residual portion of the data 856 based on an ordered list of symbols of the sidelink resources, an ordered list of RBs of the sidelink resources, or a combination thereof.

[0187] In some examples, the second subset of the sidelink resources are allocated for the transmission of the analog representation of the residual portion of the data 856 based on an ordered list of sidelink resources, and the ordered list of sidelink resources is based on a slot format of the PSSCH.

[0188] FIG. 9 shows a diagram of a system 900 including a device 905 that supports multiplexing analog and digital communications based on channel conditions in accordance with one or more aspects of the present disclosure. The device 905 maybe an example of or include the components of a device 605, a device 705, or a UE 1 15 as described herein. The device 905 may communicate (e.g., wirelessly) with one or more network entities 105, one or more UEs 115, or any combination thereof. The device 905 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, such as a communications manager 920, an input / output (I / O) controller 910, atransceiver 915, an antenna 925, at least one memory 930, code 935, and at least one processor 940. These components may be in electronic communication or otherwise coupled (e.g.. operatively, communicatively, functionally, electronically, electrically) via one or more buses (e g., a bus 945).

[0189] The I / O controller 910 may manage input and output signals for the device 905. The I / O controller 910 may also manage peripherals not integrated into the device 905. In some cases, the I / O controller 910 may represent a physical connection or port to an external peripheral. In some cases, the I / O controller 910 may utilize an operating system such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS / 2®, UNIX®, LINUX®, or another known operating system. Additionally, or alternatively, the I / O controller 910 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some cases, the I / O controller 910 may be implemented as part of one or more processors, such as the at least one processor 940. In some cases, a user may interact with the device 905 via the I / O controller 910 or via hardw are components controlled by the I / O controller 910.

[0190] In some cases, the device 905 may include a single antenna 925. However, in some other cases, the device 905 may have more than one antenna 925. which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 915 may communicate bi-directionally, via the one or more antennas 925, wired, or wireless links as described herein. For example, the transceiver 915 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver 915 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 925 for transmission, and to demodulate packets received from the one or more antennas 925. The transceiver 915, or the transceiver 915 and one or more antennas 925, may be an example of atransmitter 615, a transmitter 715, a receiver 610, a receiver 710, or any combination thereof or component thereof, as described herein.

[0191] The at least one memory 930 may include random access memory (RAM) and read-only memory (ROM). The at least one memory' 930 may store computer- readable. computer-executable code 935 including instructions that, when executed by the at least one processor 940, cause the device 905 to perform various functions described herein. The code 935 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory . In some cases, the code 935 may not be directly executable by the at least one processor 940 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some cases, the at least one memory^ 930 may contain, among other things, a basic I / O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.

[0192] The at least one processor 940 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereol). In some cases, the at least one processor 940 may be configured to operate a memory array using a memory controller. In some other cases, a memory controller may be integrated into the at least one processor 940. The at least one processor 940 may be configured to execute computer-readable instructions stored in a memory (e.g., the at least one memory' 930) to cause the device 905 to perform various functions (e.g., functions or tasks supporting multiplexing analog and digital communications based on channel conditions). For example, the device 905 or a component of the device 905 may include at least one processor 940 and at least one memory 930 coupled with or to the at least one processor 940, the at least one processor 940 and at least one memory 930 configured to perform various functions described herein. In some examples, the at least one processor 940 may include multiple processors and the at least one memory 930 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions herein. In some examples, the at least one processor 940 maybe a component of a processing system, which may refer to a system (such as a series)of machines, circuitry (including, for example, one or both of processor circuitry (which may include the at least one processor 940) and memory circuitry' (which may include the at least one memory' 930)), or components, that receives or obtains inputs and processes the inputs 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. As such, the at least one processor 940 or a processing system including the at least one processor 940 may be configured to, configurable to, or operable to cause the device 905 to perform one or more of the functions described herein. Further, as described herein, being “configured to.” being “configurable to.” and being “operable to” may be used interchangeably and may be associated with a capability, when executing code stored in the at least one memory' 930 or otherwise, to perform one or more of the functions described herein.

[0193] The communications manager 920 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 920 is capable of, configured to, or operable to support a means for communicating, via a PSCCH, a sidelink control message allocating sidelink resources for transmission of data associated with a data source, a first subset of the sidelink resources being allocated for transmission of a digital representation of a first portion of the data and a second subset of the sidelink resources being allocated for transmission of an analog representation of a residual portion of the data, where a first quantity7of sidelink resources allocated to the first subset of the sidelink resources and a second quantity of sidelink resources allocated to the second subset of the sidelink resources are based on a ratio, and where the ratio is computed based on a quality metric of the digital representation of the data and a SNR of a PSSCH. The communications manager 920 is capable of, configured to, or operable to support a means for transmitting, via the first subset of the sidelink resources, a first signal including the digital representation of the first portion of the data. The communications manager 920 is capable of, configured to, or operable to support a means for transmitting, via the second subset of the sidelink resources, a second signal including the analog representation of the residual portion of the data.

[0194] Additionally, or alternatively, the communications manager 920 may support wireless communications in accordance with examples as disclosed herein. Forexample, the communications manager 920 is capable of, configured to, or operable to support a means for receiving, via a PSCCH, a sidelink control message allocating sidelink resources for transmission of data associated with a data source, a first subset of the sidelink resources being allocated for transmission of a digital representation of a first portion of the data and a second subset of the sidelink resources being allocated for transmission of an analog representation of a residual portion of the data, where a first quantity' of sidelink resources allocated to the first subset of the sidelink resources and a second quantity’ of sidelink resources allocated to the second subset of the sidelink resources are based on a ratio, and where the ratio is computed based on a quality- metric of the digital representation of the data and a SNR of a PSSCH;. The communications manager 920 is capable of, configured to, or operable to support a means for receiving, via the first subset of the sidelink resources, a first signal including the digital representation of the first portion of the data. The communications manager 920 is capable of, configured to, or operable to support a means for receiving, via the second subset of the sidelink resources, a second signal including the analog representation of the residual portion of the data.

[0195] By including or configuring the communications manager 920 in accordance with examples as described herein, the device 905 may support techniques for splitting sidelink (e.g., XR) communications into analog and digital signals, thereby reducing processing poyver, reducing poyver consumption, and providing for more efficient utilization of communication resources.

[0196] In some examples, the communications manager 920 may be configured to perform various operations (e.g.. receiving, monitoring, transmitting) using or otherwise in cooperation with the transceiver 915, the one or more antennas 925, or any combination thereof. Although the communications manager 920 is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager 920 may be supported by or performed by the at least one processor 940, the at least one memory 930, the code 935, or any combination thereof. For example, the code 935 may include instructions executable by the at least one processor 940 to cause the device 905 to perform various aspects of multiplexing analog and digital communications based on channel conditions as described herein, orthe at least one processor 940 and the at least one memory 930 may be otherwise configured to, individually or collectively, perform or support such operations.

[0197] FIG. 10 shows a flowchart illustrating a method 1000 that supports multiplexing analog and digital communications based on channel conditions in accordance with aspects of the present disclosure. The operations of the method 1000 may be implemented by a UE or its components as described herein. For example, the operations of the method 1000 may be performed by a UE 115 as described with reference to FIGs. 1 through 9. In some examples, a 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 perform aspects of the described functions using special-purpose hardware.

[0198] At 1005, the method may include communicating, via a PSCCH, a sidelink control message allocating sidelink resources for transmission of data associated with a data source, a first subset of the sidelink resources being allocated for transmission of a digital representation of a first portion of the data and a second subset of the sidelink resources being allocated for transmission of an analog representation of a residual portion of the data, where a first quantity of sidelink resources allocated to the first subset of the sidelink resources and a second quantity of sidelink resources allocated to the second subset of the sidelink resources are based on a ratio, and where the ratio is computed based on a quality metric of the digital representation of the data and a SNR of a PSSCH. The operations of block 1005 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1005 may be performed by a sidelink control messaging component 825-a as described with reference to FIG. 8A. For example, communicating the sidelink control message may include identifying time-frequency resources over which the PSCCH is transmitted, encoding the sidelink control message to account for the channel noise and variance, and modulating the sidelink control message with an MCS.

[0199] At 1010, the method may include transmitting, via the first subset of the sidelink resources, a first signal including the digital representation of the first portion of the data. The operations of block 1010 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1010 may be performed by a digital signal component 845-a as described with reference toFIG. 8A. For example, transmitting the first signal may include encoding the first portion of the data to account for the channel noise and variance and modulating the first signal with an MCS.

[0200] At 1015, the method may include transmitting, via the second subset of the sidelink resources, a second signal including the analog representation of the residual portion of the data. The operations of block 1015 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1015 may be performed by an analog signal component 855-a as described with reference to FIG. 8A. For example, transmitting the second signal may include converting the residual portion of the data into the analog representation using a DAC.

[0201] FIG. 11 shows a flowchart illustrating a method 1 100 that supports multiplexing analog and digital communications based on channel conditions in accordance with aspects of the present disclosure. The operations of the method 1100 may be implemented by a UE or its components as described herein. For example, the operations of the method 1 100 may be performed by a UE 115 as described with reference to FIGs. 1 through 9. In some examples, a 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 perform aspects of the described functions using special-purpose hardware.

[0202] At 1105, the method may include compressing data of a data source according to a first compression format to generate a first portion of the data, where the first compression format is based on a quality metric of a digital representation of the data, a SNR of a PSSCH, or a combination thereof. The operations of block 1105 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1105 may be performed by a data compression component 830 as described with reference to FIG. 8 A. For example, compressing the data may include applying a compression algorithm to the data to reduce the quantity of data.

[0203] At 1110, the method may include communicating, via a PSCCH, a sidelink control message allocating sidelink resources for transmission of the data associated with the data source, a first subset of the sidelink resources being allocated for transmission of the digital representation of the first portion of the data and a secondsubset of the sidelink resources being allocated for transmission of an analog representation of a residual portion of the data, where a first quantity of sidelink resources allocated to the first subset of the sidelink resources and a second quantity of sidelink resources allocated to the second subset of the sidelink resources are based on a ratio, and where the ratio is computed based on the quality metric of the digital representation of the data and the SNR of the PSSCH. The operations of block 1110 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1110 may be performed by a sidelink control messaging component 825-a as described with reference to FIG. 8 A. For example, communicating the sidelink control message may include identifying time-frequency resources over which the PSCCH is transmitted, encoding the sidelink control message to account for the channel noise and variance, and modulating the sidelink control message with an MCS.

[0204] At 1115, the method may include transmitting, via the first subset of the sidelink resources, a first signal including the digital representation of the first portion of the data. The operations of block 1115 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1115 may be performed by a digital signal component 845-a as described with reference to FIG. 8 A. For example, transmitting the first signal may include encoding the first portion of the data to account for the channel noise and variance and modulating the first signal with an MCS.

[0205] At 1120, the method may include transmitting, via the second subset of the sidelink resources, a second signal including the analog representation of the residual portion of the data. The operations of block 1120 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1120 may be performed by an analog signal component 855-a as described with reference to FIG. 8A. For example, transmitting the second signal may include converting the residual portion of the data into the analog representation using a DAC.

[0206] FIG. 12 shows a flowchart illustrating a method 1200 that supports multiplexing analog and digital communications based on channel conditions in accordance with aspects of the present disclosure. The operations of the method 1200 may be implemented by a UE or its components as described herein. For example, theoperations of the method 1200 may be performed by a UE 115 as described with reference to FIGs. 1 through 9. In some examples, a 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 perform aspects of the described functions using special-purpose hardware.

[0207] At 1205, the method may include receiving, via a PSCCH, a sidelink control message allocating sidelink resources for transmission of data associated with a data source, a first subset of the sidelink resources being allocated for transmission of a digital representation of a first portion of the data and a second subset of the sidelink resources being allocated for transmission of an analog representation of a residual portion of the data, where a first quantity of sidelink resources allocated to the first subset of the sidelink resources and a second quantity of sidelink resources allocated to the second subset of the sidelink resources are based on a ratio, and where the ratio is computed based on a quality metric of the digital representation of the data and a SNR of a PSSCH. The operations of block 1205 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1205 may be performed by a sidelink control messaging component 825-b as described with reference to FIG. 8B. For example, receiving the sidelink control message may include identifying time-frequency resources over which the PSCCH is transmitted, demodulating the sidelink control message over the time-frequency resources, and decoding the demodulated sidelink control message to obtain bits that indicate the sidelink control message.

[0208] At 1210, the method may include receiving, via the first subset of the sidelink resources, a first signal including the digital representation of the first portion of the data. The operations of block 1210 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1210 may be performed by a digital signal component 845 -b as described with reference to FIG. 8B. For example, receiving the first signal may include demodulating the first signal over the first subset of the sidelink resources to obtain the first portion of the data, decoding the first portion of the data to obtain bit indicating the first portion of the data.

[0209] At 1215, the method may include receiving, via the second subset of the sidelink resources, a second signal including the analog representation of the residual portion of the data. The operations of block 1215 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1215 may be performed by an analog signal component 855-b as described with reference to FIG. 8B. For example, receiving the second signal may include converting the analog representation of the residual portion of the data into the residual portion using an ADC.

[0210] FIG. 13 shows a flowchart illustrating a method 1300 that supports multiplexing analog and digital communications based on channel conditions in accordance with aspects of the present disclosure. The operations of the method 1300 may be implemented by a UE or its components as described herein. For example, the operations of the method 1300 may be performed by a UE 115 as described with reference to FIGs. 1 through 9. In some examples, a 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 perform aspects of the described functions using special-purpose hardware.

[0211] At 1305, the method may include receiving, via a PSCCH, a sidelink control message allocating sidelink resources for transmission of data associated with a data source, a first subset of the sidelink resources being allocated for transmission of a digital representation of a first portion of the data and a second subset of the sidelink resources being allocated for transmission of an analog representation of a residual portion of the data, where a first quantity of sidelink resources allocated to the first subset of the sidelink resources and a second quantity of sidelink resources allocated to the second subset of the sidelink resources are based on a ratio, and where the ratio is computed based on a quality7metric of the digital representation of the data and a SNR of a PSSCH;. The operations of block 1305 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1305 may be performed by a sidelink control messaging component 825-b as described with reference to FIG. 8B. For example, receiving the sidelink control message may include identifying time-frequency resources over which the PSCCH is transmitted, demodulating the sidelink control message over the time-frequency resources, anddecoding the demodulated sidelink control message to obtain bits that indicate the sidelink control message.

[0212] At 1310, the method may include receiving, via the first subset of the sidelink resources, a first signal including the digital representation of the first portion of the data. The operations of block 1310 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1310 may be performed by a digital signal component 845 -b as described with reference to FIG. 8B. For example, receiving the first signal may include demodulating the first signal over the first subset of the sidelink resources to obtain the first portion of the data, decoding the first portion of the data to obtain bit indicating the first portion of the data.

[0213] At 1315, the method may include receiving, via the second subset of the sidelink resources, a second signal including the analog representation of the residual portion of the data. The operations of block 1315 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1315 may be performed by an analog signal component 855-b as described with reference to FIG. 8B. For example, receiving the second signal may include converting the analog representation of the residual portion of the data into the residual portion using an ADC.

[0214] At 1320, the method may include performing channel estimations of the PSSCH based on one or more pilot signals transmitted via the PSSCH. The operations of block 1320 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1320 may be performed by a communications manager 820-b as described with reference to FIG. 8B. For example, performing channel estimations may include identifying time and frequency resources associated with each pilot signal, monitoring the time and frequency resources, and measuring the SNR, pSNR, or power metrics of the time and frequency resources.

[0215] The following provides an overview of aspects of the present disclosure:

[0216] Aspect 1 : A method for wireless communications at a wireless device, comprising: communicating, via a PSCCH, a sidelink control message allocating sidelink resources for transmission of data associated with a data source, a first subset of the sidelink resources being allocated for transmission of a digital representation of afirst portion of the data and a second subset of the sidelink resources being allocated for transmission of an analog representation of a residual portion of the data, wherein a first quantity of sidelink resources allocated to the first subset of the sidelink resources and a second quantity’ of sidelink resources allocated to the second subset of the sidelink resources are based at least in part on a ratio, and wherein the ratio is computed based at least in part on a quality metric of the digital representation of the data and a SNR of a PSSCH; transmitting, via the first subset of the sidelink resources, a first signal comprising the digital representation of the first portion of the data; and transmitting, via the second subset of the sidelink resources, a second signal comprising the analog representation of the residual portion of the data.

[0217] Aspect 2: The method of aspect 1, further comprising: compressing the data of the data source according to a first compression format to generate the first portion of the data, wherein the first compression format is based at least in part on the quality metric of the digital representation of the data, the SNR of the PSSCH, or a combination thereof.

[0218] Aspect 3: The method of aspect 2, further comprising: encoding the first portion of the data; and modulating, based at least in part on the encoding, the first portion of the data to generate the digital representation of the first portion of the data, wherein transmitting the first signal is based at least in part on the modulating.

[0219] Aspect 4: The method of aspect 3, further comprising: generating one or more pilot signals for the PSSCH, wherein modulating the first portion of the data is further based at least in part on generating the one or more pilot signals.

[0220] Aspect 5: The method of any of aspects 2 through 4, further comprising: decompressing, based at least in part on compressing the data of the data source, the first portion of the data, wherein the residual portion of the data comprises a difference between the data of the data source and the decompressed first portion of the data; and converting, via a DAC, the residual portion of the data into the analog representation of the residual portion of the data, wherein transmitting the second signal is based at least in part on the converting.

[0221] Aspect 6: The method of any of aspects 1 through 5, further comprising: filtering the second signal comprising the analog representation of the residual portionof the data based at least in part on a bandwidth associated with the second subset of the sidelink resources, a bandwidth of the first subset of the sidelink resources, or a combination thereof.

[0222] Aspect 7: The method of any of aspects 1 through 6. further comprising: communicating, via the sidelink control message, an indication of a symbol of the sidelink resources allocated as a starting symbol of the first subset of the sidelink resources, a quantity of consecutive symbols from the starting symbol allocated to the first subset of the sidelink resources, a resource block of the sidelink resources allocated as a starting resource block of the first subset of the sidelink resources, a quantity of consecutive resource blocks from the starting resource block allocated to the first subset of the sidelink resources, or a combination thereof.

[0223] Aspect 8: The method of any of aspects 1 through 7, further comprising: communicating, via the sidelink control message, an indication of a symbol of the sidelink resources allocated as a starting symbol of the second subset of the sidelink resources, a quantity of consecutive symbols from the starting symbol allocated to the second subset of the sidelink resources, a resource block of the sidelink resources allocated as a starting resource block of the second subset of the sidelink resources, a quantity’ of consecutive resource blocks from the starting resource block allocated to the second subset of the sidelink resources, or a combination thereof.

[0224] Aspect 9: The method of any of aspects 1 through 8, further comprising: transmitting, via the sidelink control message, a scalar value associated with the ratio, wherein the scalar value is based at least in part on the quality' metric of the digital representation of the data and the SNR of the PSSCH.

[0225] Aspect 10: The method of aspect 9, wherein the ratio comprises a quotient of a difference between the scalar value and one and the scalar value.

[0226] Aspect 11 : The method of any of aspects 1 through 10, wherein the second subset of the sidelink resources are allocated for the transmission of the analog representation of the residual portion of the data based at least in part on the SNR of each sidelink resource of the second subset of the sidelink resources being within a threshold.

[0227] Aspect 12: The method of any of aspects 1 through 11 , wherein the second subset of the sidelink resources are allocated for the transmission of the analog representation of the residual portion of the data based at least in part on an ordered list of symbols of the sidelink resources, an ordered list of resource blocks of the sidelink resources, or a combination thereof.

[0228] Aspect 13: The method of any of aspects 1 through 12, wherein the second subset of the sidelink resources are allocated for the transmission of the analog representation of the residual portion of the data based at least in part on an ordered list of sidelink resources, and the ordered list of sidelink resources is based at least in part on a slot format of the PSSCH.

[0229] Aspect 14: A method for wireless communications at a wireless device, comprising: receiving, via a PSCCH, a sidelink control message allocating sidelink resources for transmission of data associated with a data source, a first subset of the sidelink resources being allocated for transmission of a digital representation of a first portion of the data and a second subset of the sidelink resources being allocated for transmission of an analog representation of a residual portion of the data, wherein a first quantity7of sidelink resources allocated to the first subset of the sidelink resources and a second quantity7of sidelink resources allocated to the second subset of the sidelink resources are based at least in part on a ratio, and wherein the ratio is computed based at least in part on a quality metric of the digital representation of the data and a SNR of a PSSCH;; receiving, via the first subset of the sidelink resources, a first signal comprising the digital representation of the first portion of the data; and receiving, via the second subset of the sidelink resources, a second signal comprising the analog representation of the residual portion of the data.

[0230] Aspect 15: The method of aspect 14, further comprising: performing channel estimations of the PSSCH based at least in part on one or more pilot signals transmitted via the PSSCH.

[0231] Aspect 16: The method of aspect 15, further comprising: demodulating, based at least in part on the channel estimations, the first signal to obtain the digital representation of the first portion of the data; decoding, based at least in part on thedemodulating, the digital representation of the first portion of the data to obtain the first portion of the data; and decompressing the first portion of the data.

[0232] Aspect 17: The method of aspect 16, further comprising: decoding, based at least in part on the channel estimations, the analog representation of the residual portion of the data to obtain the residual portion of the data; and combining the first portion of the data and the residual portion of the data to obtain the data associated with the data source.

[0233] Aspect 18: The method of any of aspects 14 through 17, further comprising: communicating, via the sidelink control message, an indication of a symbol of the sidelink resources allocated as a starting symbol of the first subset of the sidelink resources, a quantity of consecutive symbols from the starting symbol allocated to the first subset of the sidelink resources, a resource block of the sidelink resources allocated as a starting resource block of the first subset of the sidelink resources, a quantity of consecutive resource blocks from the starting resource block allocated to the first subset of the sidelink resources, or a combination thereof.

[0234] Aspect 19: The method of any of aspects 14 through 18, further comprising: communicating, via the sidelink control message, an indication of a symbol of the sidelink resources allocated as a starting symbol of the second subset of the sidelink resources, a quantity of consecutive symbols from the starting symbol allocated to the second subset of the sidelink resources, a resource block of the sidelink resources allocated as a starting resource block of the second subset of the sidelink resources, a quantity7of consecutive resource blocks from the starting resource block allocated to the second subset of the sidelink resources, or a combination thereof.

[0235] Aspect 20: The method of any of aspects 14 through 19. further comprising: receiving, via the sidelink control message, a scalar value associated with the ratio, wherein the scalar value is based at least in part on the quality metric of the digital representation of the data and the SNR of the PSSCH.

[0236] Aspect 21 : The method of aspect 20, wherein the ratio comprises a quotient of a difference between the scalar value and one and the scalar value.

[0237] Aspect 22: The method of any of aspects 14 through 21 , wherein the second subset of the sidelink resources are allocated for the transmission of the analog representation of the residual portion of the data based at least in part on the SNR of each sidelink resource of the second subset of the sidelink resources being within a threshold.

[0238] Aspect 23: The method of any of aspects 14 through 22, wherein the second subset of the sidelink resources are allocated for the transmission of the analog representation of the residual portion of the data based at least in part on an ordered list of symbols of the sidelink resources, an ordered list of resource blocks of the sidelink resources, or a combination thereof.

[0239] Aspect 24: The method of any of aspects 14 through 23, wherein the second subset of the sidelink resources are allocated for the transmission of the analog representation of the residual portion of the data based at least in part on an ordered list of sidelink resources, and the ordered list of sidelink resources is based at least in part on a slot format of the PSSCH.

[0240] Aspect 25: A wireless device for wireless communications, comprising one or more memories storing processor-executable code, and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the wireless device to perform a method of any of aspects 1 through 13.

[0241] Aspect 26: A wireless device for wireless communications, comprising at least one means for performing a method of any of aspects 1 through 13.

[0242] Aspect 27 : A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by a processor to perform a method of any of aspects 1 through 13.

[0243] Aspect 28: A wireless device for wireless communications, comprising one or more memories storing processor-executable code, and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the wireless device to perform a method of any of aspects 14 through 24.

[0244] Aspect 29: A wireless device for wireless communications, comprising at least one means for performing a method of any of aspects 14 through 24.

[0245] Aspect 30: A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by a processor to perform a method of any of aspects 14 through 24.

[0246] It should be noted that the methods described herein describe possible implementations, and that the operations and the steps may be rearranged or otherwise modified and that other implementations are possible. Further, aspects from two or more of the methods may be combined.

[0247] Although aspects of an LTE, LTE-A, LTE-A Pro, or NR system may be described for purposes of example, and LTE, LTE-A. LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques may be applicable to various other wireless communications systems such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.1 1 (Wi-Fi), IEEE 802. 16 (WiMAX), IEEE 802.20, Flash-OFDM, as well as other systems and radio technologies not explicitly mentioned herein.

[0248] Information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0249] The various illustrative blocks and components described in connection with the disclosure herein may be implemented or performed using a general-purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor but, in the alternative, the 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 in conjunction with a DSP core, or any other such configuration). Any functions or operations described herein as being capable of being performed by a processor may be performed by multiple processors that, individually or collectively, are capable of performing the described functions or operations.

[0250] The functions described herein may be implemented using hardware, software executed by a processor, firmware, or any combination thereof. If implemented using software executed by a processor, the functions may be stored as or transmitted using one or more instructions or code of a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.

[0251] Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A non-transitory storage medium may be any available medium that may be accessed 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, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable medium. Disk and disc, as used herein, include CD. laser disc,optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc. Disks may reproduce data magnetically, and discs may reproduce data optically using lasers. Combinations of the above are also included within the scope of computer-readable media. Any functions or operations described herein as being capable of being performed by a memory may be performed by multiple memories that, individually or collectively, are capable of performing the described functions or operations.

[0252] As used herein, including in the claims, “or” as used in a list of items (e.g., a list of items prefaced by a phrase such as “at least one of or “one or more of’) indicates an inclusive list such that, for example, a list of at least one of 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). Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on.”

[0253] As used herein, including in the claims, the article “a” before a noun is open- ended and understood to refer to “at least one” of those nouns or “one or more” of those nouns. Thus, the terms “a,” “at least one,” “one or more,” “at least one of one or more” may be interchangeable. For example, if a claim recites “a component” that performs 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 “a component” having characteristics or performing functions may refer to “at least one of one or more components” having a particular characteristic or performing a particular function. Subsequent reference to a component introduced with the article “a” using the terms “the” or “said” may refer to any or all of the one or more components. For example, a component introduced with the article “a” may be understood to mean “one or more components.” and referring to “the component” subsequently in the claims may be understood to be equivalent to referring to “at least one of the one or more components.” Similarly, subsequent reference to a component introduced as “one or more components” using the terms “the” or “said” may refer to any or all of the one or more components. For example, referring to “the one or more components”subsequently in the claims may be understood to be equivalent to referring to “at least one of the one or more components.”

[0254] The term “determine” or “determining” encompasses a variety of actions and, therefore, “determining” can include calculating, computing, processing, deriving, investigating, looking up (such as via looking up in a table, a database or another data structure), ascertaining and the like. Also, “determining” can include receiving (e.g., receiving information), accessing (e.g., accessing data stored in memory) and the like. Also, “determining” can include resolving, obtaining, selecting, choosing, establishing, and other such similar actions.

[0255] In the appended figures, similar components or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label by a dash and a second label that distinguishes among the similar components. If just the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label irrespective of the second reference label, or other subsequent reference label.

[0256] The description set forth herein, in connection with the appended drawings, describes example configurations and does not represent all the examples that may be implemented or that are within the scope of the claims. The term “example” used herein means “serving as an example, instance, or illustration,” and not “preferred” or “advantageous over other examples.” The detailed description includes specific details for the purpose of providing an understanding of the described techniques. These techniques, however, may be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described examples.

[0257] The description herein is provided to enable a person having ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person having ordinary skill in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs describedherein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.

Claims

CLAIMSWhat is claimed is:1 . A wireless device, comprising: one or more memories storing processor-executable code; and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the wireless device to: communicate, via a physical sidelink control channel, a sidelink control message allocate sidelink resources for transmission of data associated with a data source, a first subset of the sidelink resources being allocated for transmission of a digital representation of a first portion of the data and a second subset of the sidehnk resources being allocated for transmission of an analog representation of a residual portion of the data, wherein a first quantity of sidehnk resources allocated to the first subset of the sidelink resources and a second quantity of sidehnk resources allocated to the second subset of the sidehnk resources are based at least in part on a ratio, and wherein the ratio is computed based at least in part on a quality metric of a digital representation of the data and a signal-to-noise ratio of a physical sidelink shared channel; transmit, via the first subset of the sidelink resources, a first signal comprising the digital representation of the first portion of the data; and transmit, via the second subset of the sidelink resources, a second signal comprising the analog representation of the residual portion of the data.

2. The wireless device of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to: compress the data of the data source according to a first compression format to generate the first portion of the data, wherein the first compression format is based at least in part on the quality metric of the digital representation of the data, the signal-to-noise ratio of the physical sidelink shared channel, or a combination thereof.

3. The wireless device of claim 2, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to:encode the first portion of the data; and modulate, base at least in part on the encoding, the first portion of the data to generate the digital representation of the first portion of the data, wherein transmitting the first signal is based at least in part on the modulating.

4. The wireless device of claim 3, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to: generate one or more pilot signals for the physical sidelink shared channel, wherein modulating the first portion of the data is further based at least in part on generating the one or more pilot signals.

5. The wireless device of claim 2. wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to: decompress, based at least in part on compressing the data of the data source, the first portion of the data, wherein the residual portion of the data comprises a difference between the data of the data source and the decompressed first portion of the data; and convert, via a digital-to-analog converter, the residual portion of the data into the analog representation of the residual portion of the data, wherein transmitting the second signal is based at least in part on the converting.

6. The wireless device of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to: filter the second signal comprising the analog representation of the residual portion of the data based at least in part on a bandwidth associated with the second subset of the sidelink resources, a bandwidth of the first subset of the sidelink resources, or a combination thereof.

7. The wireless device of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to:communicate, via the sidelink control message, an indication of a symbol of the sidelink resources allocate as a starting symbol of the first subset of the sidelink resources, a quantity of consecutive symbols from the starting symbol allocated to the first subset of the sidelink resources, a resource block of the sidelink resources allocated as a starting resource block of the first subset of the sidelink resources, a quantity of consecutive resource blocks from the starting resource block allocated to the first subset of the sidelink resources, or a combination thereof.

8. The wireless device of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to: communicate, via the sidelink control message, an indication of a symbol of the sidelink resources allocate as a starting symbol of the second subset of the sidelink resources, a quantity of consecutive symbols from the starting symbol allocated to the second subset of the sidelink resources, a resource block of the sidelink resources allocated as a starting resource block of the second subset of the sidelink resources, a quantity of consecutive resource blocks from the starting resource block allocated to the second subset of the sidelink resources, or a combination thereof.

9. The wireless device of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to: transmit, via the sidelink control message, a scalar value associated with the ratio, wherein the scalar value is based at least in part on the quality metric of the digital representation of the data and the signal-to-noise ratio of the physical sidelink shared channel.

10. The wireless device of claim 9, wherein the ratio comprises a quotient of a difference between the scalar value and one and the scalar value.

11. The wireless device of claim 1, w herein the second subset of the sidelink resources are allocated for the transmission of the analog representation of the residual portion of the data based at least in part on the signal-to-noise ratio of each sidelink resource of the second subset of the sidelink resources being within a threshold.

12. The wireless device of claim 1 , wherein the second subset of the sidelink resources are allocated for the transmission of the analog representation of the residual portion of the data based at least in part on an ordered list of symbols of the sidelink resources, an ordered list of resource blocks of the sidelink resources, or a combination thereof.

13. The wireless device of claim 1, wherein the second subset of the sidelink resources are allocated for the transmission of the analog representation of the residual portion of the data based at least in part on an ordered list of sidelink resources, and the ordered list of sidelink resources is based at least in part on a slot format of the physical sidelink shared channel.

14. A wireless device, comprising: one or more memories storing processor-executable code; and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the wireless device to: receive, via a physical sidelink control channel, a sidelink control message allocating sidelink resources for transmission of data associated with a data source, a first subset of the sidelink resources being allocated for transmission of a digital representation of a first portion of the data and a second subset of the sidelink resources being allocated for transmission of an analog representation of a residual portion of the data, wherein a first quantity of sidelink resources allocated to the first subset of the sidelink resources and a second quantity7of sidelink resources allocated to the second subset of the sidelink resources are based at least in part on a ratio, and wherein the ratio is computed based at least in part on a quality metric of a digital representation of the data and a signal-to-noise ratio of a physical sidelink shared channel; receive, via the first subset of the sidelink resources, a first signal comprising the digital representation of the first portion of the data; and receive, via the second subset of the sidelink resources, a second signal comprising the analog representation of the residual portion of the data.

15. The wireless device of claim 14, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to: perform channel estimations of the physical sidelink shared channel based at least in part on one or more pilot signals transmitted via the physical sidelink shared channel.

16. The wireless device of claim 15, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to: demodulate, based at least in part on the channel estimations, the first signal to obtain the digital representation of the first portion of the data; decode, based at least in part on the demodulating, the digital representation of the first portion of the data to obtain the first portion of the data; and decompress the first portion of the data.

17. The wireless device of claim 16, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to: decode, based at least in part on the channel estimations, the analog representation of the residual portion of the data to obtain the residual portion of the data; and combine the first portion of the data and the residual portion of the data to obtain the data associated with the data source.

18. The wireless device of claim 14, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to: communicate, via the sidelink control message, an indication of a sy mbol of the sidelink resources allocate as a starting symbol of the first subset of the sidelink resources, a quantity of consecutive symbols from the starting symbol allocated to the first subset of the sidelink resources, a resource block of the sidelink resources allocated as a starting resource block of the first subset of the sidelink resources, a quantity ofconsecutive resource blocks from the starting resource block allocated to the first subset of the sidelink resources, or a combination thereof.

19. The wireless device of claim 14, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to: communicate, via the sidelink control message, an indication of a sy mbol of the sidelink resources allocate as a starting symbol of the second subset of the sidelink resources, a quantity of consecutive symbols from the starting symbol allocated to the second subset of the sidelink resources, a resource block of the sidelink resources allocated as a starting resource block of the second subset of the sidelink resources, a quantity of consecutive resource blocks from the starting resource block allocated to the second subset of the sidelink resources, or a combination thereof.

20. The wireless device of claim 14, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to: receive, via the sidelink control message, a scalar value associated with the ratio, wherein the scalar value is based at least in part on the quality metric of the digital representation of the data and the signal-to-noise ratio of the physical sidelink shared channel.

21. The wireless device of claim 20, wherein the ratio comprises a quotient of a difference between the scalar value and one and the scalar value.

22. The wireless device of claim 14, wherein the second subset of the sidelink resources are allocated for the transmission of the analog representation of the residual portion of the data based at least in part on the signal-to-noise ratio of each sidelink resource of the second subset of the sidelink resources being within a threshold.

23. The wireless device of claim 14, wherein the second subset of the sidelink resources are allocated for the transmission of the analog representation of the residual portion of the data based at least in part on an ordered list of symbols of the sidelink resources, an ordered list of resource blocks of the sidelink resources, or a combination thereof.

24. The wireless device of claim 14, wherein the second subset of the sidelink resources are allocated for the transmission of the analog representation of the residual portion of the data based at least in part on an ordered list of sidelink resources, and the ordered list of sidelink resources is based at least in part on a slot format of the physical sidelink shared channel.

25. A method for wireless communications at a wireless device, comprising: communicating, via a physical sidelink control channel, a sidelink control message allocating sidelink resources for transmission of data associated with a data source, a first subset of the sidelink resources being allocated for transmission of a digital representation of a first portion of the data and a second subset of the sidelink resources being allocated for transmission of an analog representation of a residual portion of the data, wherein a first quantity of sidelink resources allocated to the first subset of the sidelink resources and a second quantity of sidelink resources allocated to the second subset of the sidelink resources are based at least in part on a ratio, and wherein the ratio is computed based at least in part on a quality metric of a digital representation of the data and a signal-to-noise ratio of a physical sidelink shared channel; transmitting, via the first subset of the sidelink resources, a first signal comprising the digital representation of the first portion of the data; and transmitting, via the second subset of the sidelink resources, a second signal comprising the analog representation of the residual portion of the data.

26. The method of claim 25, further comprising: transmitting, via the sidelink control message, a scalar value associated with the ratio, wherein the scalar value is based at least in part on the quality metric of the digital representation of the data and the signal-to-noise ratio of the physical sidelink shared channel.

27. The method of claim 26, wherein the ratio comprises a quotient of a difference between the scalar value and one and the scalar value.

28. A method for wireless communications at a wireless device, comprising: receiving, via a physical sidelink control channel, a sidelink control message allocating sidelink resources for transmission of data associated with a data source, a first subset of the sidelink resources being allocated for transmission of a digital representation of a first portion of the data and a second subset of the sidelink resources being allocated for transmission of an analog representation of a residual portion of the data, wherein a first quantity of sidelink resources allocated to the first subset of the sidelink resources and a second quantity of sidelink resources allocated to the second subset of the sidelink resources are based at least in part on a ratio, and wherein the ratio is computed based at least in part on a quality metric of a digital representation of the data and a signal-to-noise ratio of a physical sidelink shared channel; receiving, via the first subset of the sidelink resources, a first signal comprising the digital representation of the first portion of the data; and receiving, via the second subset of the sidelink resources, a second signal comprising the analog representation of the residual portion of the data.

29. The method of claim 28, further comprising: receiving, via the sidelink control message, a scalar value associated with the ratio, wherein the scalar value is based at least in part on the quality metric of the digital representation of the data and the signal-to-noise ratio of the physical sidelink shared channel.

30. The method of claim 29, wherein the ratio comprises a quotient of a difference between the scalar value and one and the scalar value.

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