Resource mapping for probabilistic amplitude shaping

Abstract

Methods, systems, and devices for wireless communication are described. The wireless device may generate a first set of shaped symbols using a first distribution matcher corresponding to a first frequency sub-band, and generate a second set of shaped symbols using a second distribution matcher corresponding to a second frequency sub-band. The wireless device may segment the first set of shaped symbols into a first set of sub-blocks, and may segment the second set of shaped symbols into a second set of sub-blocks. The wireless device may cascade one or more sub-blocks from the first set of sub-blocks with one or more sub-blocks from the second set of sub-blocks. The wireless device may map a set of cascaded shaped symbols to a set of resources according to an ordering of frequency first and time second. The wireless device may transmit the set of cascaded shaped symbols via the set of resources based on the mapping.

Description

Technical Field

[0001] The following relates to wireless communications, including resource mapping for Probability Amplitude Shaping (PAS). Background Art

[0002] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcast, and the like. These systems may be able to support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth generation (4G) systems (such as long term evolution (LTE) systems, advanced LTE (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 techniques such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple access communication system may include one or more base stations, each of which supports wireless communication for communication devices, which may be referred to as user equipment (UE). Summary of the Invention

[0003] The described techniques relate to improved methods, systems, devices, and apparatuses for supporting resource mapping for probabilistic amplitude shaping (PAS). For example, the described techniques enable a wireless device to utilize one or more distribution matchers as part of a probabilistic shaping process, each distribution matcher corresponding to a respective frequency subband, and the wireless device to concatenate the outputs of the distribution matchers across the frequency subband for resource mapping. The wireless device may input a first subset of a set of information bits into a first distribution matcher to generate a first set of shaped symbols, and may additionally input a second subset of the set of information bits into a second distribution matcher to generate a second set of shaped symbols. The first distribution matcher may correspond to a first frequency subband, and the second distribution matcher may correspond to a second frequency subband. In some examples, the block size of the first distribution matcher may be based on the size of the first frequency subband, and the block size of the second distribution matcher may be based on the size of the second frequency subband.

[0004] The wireless device may partition the first set of shaped symbols into a first set of subblocks, and may partition the second set of shaped symbols into a second set of subblocks. To obtain a set of concatenated shaped symbols, the wireless device may concatenate one or more subblocks from the first set of subblocks with one or more subblocks from the second set of subblocks. The wireless device may encode the set of concatenated shaped symbols, for example, using forward error correction (FEC). After encoding, the wireless device may map the set of concatenated shaped symbols to a set of resources based on a frequency-first, time-second ordering. The wireless device may transmit a message including the set of concatenated shaped symbols via the set of resources based on the mapping.

[0005] A method for wireless communication at a wireless device is described. The method may include: generating a first set of shaped symbols corresponding to a first subset of a set of information bits using a first distribution matcher of the wireless device, the first distribution matcher being associated with a first frequency subband; generating a second set of shaped symbols corresponding to a second subset of the set of information bits using a second distribution matcher of the wireless device, the second distribution matcher being associated with a second frequency subband; partitioning the first set of shaped symbols into a first set of subblocks, wherein each subblock in the first set of subblocks includes a corresponding subset of the first set of shaped symbols; partitioning the second set of shaped symbols into a second set of subblocks, wherein each subblock in the second set of subblocks includes a corresponding subset of the second set of shaped symbols; concatenating a first subblock in the first set of subblocks with a second subblock in the second set of subblocks to obtain a first set of concatenated shaped symbols, wherein the first set of concatenated shaped symbols is associated with the first frequency subband and the second frequency subband; and transmitting a message including at least the first set of concatenated shaped symbols.

[0006] An apparatus for wireless communication at a wireless device is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to: generate a first set of shaped symbols corresponding to a first subset of a set of information bits using a first distribution matcher of the wireless device, the first distribution matcher being associated with a first frequency subband; generate a second set of shaped symbols corresponding to a second subset of the set of information bits using a second distribution matcher of the wireless device, the second distribution matcher being associated with a second frequency subband; partition the first set of shaped symbols into a first set of subblocks, wherein each subblock in the first set of subblocks includes a shaped symbol; the first set of shaped symbols; segmenting the second set of shaped symbols into a second set of sub-blocks, wherein each sub-block in the second set of sub-blocks comprises a corresponding subset of the second set of shaped symbols; concatenating a first sub-block in the first set of sub-blocks with a second sub-block in the second set of sub-blocks to obtain a first set of concatenated shaped symbols, wherein the first set of concatenated shaped symbols is associated with the first frequency sub-band and the second frequency sub-band; and transmitting a message comprising at least the first set of concatenated shaped symbols.

[0007] Another apparatus for wireless communication at a wireless device is described. The apparatus may include: means for generating a first set of shaped symbols corresponding to a first subset of a set of information bits using a first distribution matcher of the wireless device, the first distribution matcher being associated with a first frequency subband; means for generating a second set of shaped symbols corresponding to a second subset of the set of information bits using a second distribution matcher of the wireless device, the second distribution matcher being associated with a second frequency subband; means for partitioning the first set of shaped symbols into a first set of subblocks, wherein each subblock in the first set of subblocks includes the shaped symbol. means for partitioning the second set of shaped symbols into a second set of subblocks, wherein each subblock in the second set of subblocks comprises a corresponding subset of the second set of shaped symbols; means for concatenating a first subblock in the first set of subblocks with a second subblock in the second set of subblocks to obtain a first set of concatenated shaped symbols, wherein the first set of concatenated shaped symbols is associated with the first frequency subband and the second frequency subband; and means for transmitting a message comprising at least the first set of concatenated shaped symbols.

[0008] A non-transitory computer-readable medium storing code for wireless communication at a wireless device is described. The code may include instructions executable by a processor to: generate a first set of shaped symbols corresponding to a first subset of a set of information bits using a first distribution matcher of the wireless device, the first distribution matcher being associated with a first frequency subband; generate a second set of shaped symbols corresponding to a second subset of the set of information bits using a second distribution matcher of the wireless device, the second distribution matcher being associated with a second frequency subband; and partition the first set of shaped symbols into a first set of subblocks, wherein each subblock in the first set of subblocks includes a first set of shaped symbols; a second set of shaped symbols; a first subblock in the first set of subblocks; a second subblock in the second set of subblocks; a first subblock in the first set of subblocks; a second subblock in the second set of subblocks; a first set of concatenated shaped symbols ...

[0009] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, components, or instructions for mapping the first set of shaped symbols to a first time-frequency matrix representation of a resource grid, wherein partitioning the first set of shaped symbols may be based at least in part on the first time-frequency matrix representation; and mapping the second set of shaped symbols to a second time-frequency matrix representation of the resource grid, wherein partitioning the second set of shaped symbols may be based at least in part on the second time-frequency matrix representation.

[0010] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first time-frequency matrix representation corresponds to a first number of frequency domain resources and a first number of time domain resources, and the second time-frequency matrix representation corresponds to a second number of frequency domain resources and a second number of time domain resources.

[0011] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the number of sub-blocks in the first set of sub-blocks may be associated with the first number of time domain resources; and the number of sub-blocks in the second set of sub-blocks may be associated with the second number of time domain resources.

[0012] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the number of symbols in the first set of concatenated shaped symbols may be equal to the sum of the first number of frequency-domain resources and the second number of frequency-domain resources.

[0013] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, components, or instructions for concatenating a third sub-block from the first set of sub-blocks with a fourth sub-block from the second set of sub-blocks to obtain a second set of concatenated shaped symbols, wherein the message also includes the second set of concatenated shaped symbols.

[0014] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, components, or instructions for performing a first symbol-to-bit conversion operation on the first set of concatenated shaped symbols to obtain a first bitstream; and performing a second symbol-to-bit conversion operation on the second set of concatenated shaped symbols to obtain a second bitstream.

[0015] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, components, or instructions for interleaving the first bitstream and the second bitstream based on the first frequency subband and the second frequency subband to obtain an interleaved bitstream; and encoding the interleaved bitstream using an encoder of the wireless device, wherein sending the message may be based on the encoding.

[0016] In some examples, the method, apparatus, and non-transitory computer-readable medium may include further operations, features, components, or instructions for performing the following operations: multiplexing the set of parity bits with one or more unshaped information bits in the set of information bits, wherein sending the message may be based on the multiplexing.

[0017] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, components, or instructions for: performing a symbol-to-bit conversion operation on the first set of concatenated shaped symbols to obtain a first bitstream; and encoding the first bitstream using an encoder of the wireless device, wherein sending the message may be based on the encoding.

[0018] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, encoding the first bitstream may include operations, features, components, or instructions for generating, using the encoder of the wireless device, a set of parity bits based on the first set of concatenated shaped symbols.

[0019] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, components, or instructions for: multiplexing the set of parity bits with one or more unshaped information bits in the set of information bits to obtain a multiplexed set of bits; and interleaving the multiplexed bits in the multiplexed set of bits based on the first frequency subband and the second frequency subband, wherein sending the message is based on the interleaving.

[0020] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending the message may include operations, features, components, or instructions for mapping the first set of concatenated shaped symbols to a set of resources based on a frequency first, time second ordering, wherein the message may be sent via the set of resources.

[0021] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the block size of the first distribution matcher may be based on the size of the first frequency subband, and the block size of the second distribution matcher may be based on the size of the second frequency subband.

[0022] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may further include operations, features, components, or instructions for receiving control signaling indicating the size of the first frequency sub-band and the size of the second frequency sub-band.

[0023] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the size of the first frequency sub-band and the size of the second frequency sub-band may be based on bandwidth.

[0024] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, components, or instructions for receiving a signal indicating one or more parameters for the first distribution matcher, one or more parameters for the second distribution matcher, or a combination thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 An example of a wireless communication system supporting resource mapping for Probability Amplitude Shaping (PAS) according to one or more aspects of the present disclosure is illustrated.

[0026] Figure 2 An example of a wireless communication system supporting resource mapping for PAS according to one or more aspects of the present disclosure is illustrated.

[0027] Figure 3 An example of an encoding process supporting resource mapping for PAS according to one or more aspects of the present disclosure is illustrated.

[0028] Figure 4 An example of an encoding process supporting resource mapping for PAS according to one or more aspects of the present disclosure is illustrated.

[0029] Figure 5 An example of a process flow supporting resource mapping for PAS according to one or more aspects of the present disclosure is illustrated.

[0030] Figure 6 and Figure 7 A block diagram illustrating a device supporting resource mapping for PAS according to one or more aspects of the present disclosure is illustrated.

[0031] Figure 8 A block diagram of a communication manager supporting resource mapping for PAS according to one or more aspects of the present disclosure is illustrated.

[0032] Figure 9 A diagram illustrating a system including a network entity supporting resource mapping for PAS according to one or more aspects of the present disclosure is illustrated.

[0033] Figure 10 A diagram illustrating a system including a UE supporting resource mapping for PAS according to one or more aspects of the present disclosure is illustrated.

[0034] Figures 11 to 13 A flowchart illustrating a method of supporting resource mapping for PAS according to one or more aspects of the present disclosure is illustrated. DETAILED DESCRIPTION

[0035] In some wireless systems, data may be modulated by a transmitting device by shaping the data into a constellation of modulation symbols for transmission to a receiving device. Each point in the constellation may represent one or more bits. In some cases, some wireless communication systems may utilize high-order modulation to improve the spectral efficiency of wireless transmissions. In some cases, the distribution of modulated symbols may be shaped so that different symbols of the symbol constellation may have different probabilities of use (e.g., some symbols may be more likely to be mapped to the air and therefore transmitted over the air than other symbols). Such a distribution may be referred to as a non-uniform distribution of symbols. For example, modulation symbols associated with lower amplitudes may be selected with a greater probability (and therefore selected more frequently in time or in conjunction with a given set of bits) than modulation symbols associated with higher amplitudes, which may provide power savings, improved spectral efficiency, or other benefits.

[0036] One or more probabilistic shaping techniques can be used to shape the distribution of symbols. Probabilistic shaping can be a technique for improving the spectral efficiency of coded modulation and can generate non-uniformly distributed coded modulation symbols or non-uniformly distributed constellations. In some examples, non-uniformly distributed symbols can have higher capacity than a uniform symbol distribution and can result in higher transmission capacity, higher spectral efficiency, or generally higher communication quality. An example of a probabilistic shaping framework can be probabilistic amplitude shaping (PAS) (e.g., distribution matching), which can combine constellation shaping with channel coding techniques. PAS can shape the amplitude of the constellation of modulated symbols (e.g., the amplitude can be non-uniform).

[0037] For example, to support PAS, a transmitting device may utilize a distribution matcher to perform distribution matching on a set of information bits for which constellation mapping is to be performed (e.g., selecting corresponding modulation symbols from a symbol constellation). Prior to distribution matching, it may be assumed that the set of information bits is uniformly (e.g., randomly) distributed, such that each individual bit has an equal probability of being 0 or 1. Distribution matching may include converting the set of information bits (e.g., k input bits) into a corresponding symbol sequence (e.g., n symbols), wherein different symbols within a pool of possible symbols have different probabilities of being included in the corresponding symbol sequence—that is, different possible symbols may have different associated probabilities of selection based on a non-uniform probability distribution (e.g., associated with the distribution matcher). For example, where different symbols correspond to different amplitudes (e.g., where the symbols are amplitude shift keying (ASK) symbols), some amplitudes may be more likely to be included in the sequence than other amplitudes based on the non-uniform probability distribution.

[0038] However, PAS operation may be limited to layers or bandwidths with similar spatial or frequency selectivity. More precisely, in order to perform PAS for transmission via multiple layers or bandwidths, the multiple layers or bandwidths must share a similar signal-to-noise ratio (SNR). Therefore, in some scenarios, the transmitting device may utilize different distribution matchers for different frequency bands, layers, etc. In addition, some parameters of the PAS process, such as block length (also referred to as block size), may depend on the resources allocated for transmission. For limited resource transmission, the block length may be relatively short, which may introduce significant rate loss.

[0039] The present disclosure provides techniques for a probabilistic shaping framework in which the outputs of distribution matchers can be concatenated across corresponding frequency bands or frequency subbands. For example, as part of a PAS process for a set of information bits, a transmitting device may utilize a first distribution matcher associated with a first frequency subband and a second distribution matcher associated with a second frequency subband. The transmitting device may partition the shaped symbols output from the first distribution matcher and the shaped symbols output from the second distribution matcher into a first set of subblocks and a second set of subblocks, respectively. For example, the transmitting device may partition the shaped symbols based on the size of the first frequency subband and the size of the second frequency subband. The transmitting device may concatenate each subblock in the first set of subblocks with the corresponding subblock in the second set of subblocks to obtain a concatenated set of subblocks. Thus, the concatenated subblocks may be associated with both the first frequency subband and the second frequency subband, which may increase the block length of the PAS process and reduce the potential for rate loss.

[0040] The transmitting device may perform symbol-to-bit conversion to convert the concatenated sub-blocks into a shaped bit set for encoding. In some examples, the transmitting device may interleave the shaped bit set before encoding. Additionally or alternatively, the transmitting device may multiplex and interleave parity bits generated via encoding with unshaped information bits. After encoding, the transmitting device may map the coded shaped bits (e.g., and any multiplexed unshaped bits) to a set of resources for transmission according to a frequency-first, time-second ordering. For example, the transmitting device may map the coded shaped bits to frequency-domain resources of the resource set before mapping them to time-domain resources of the resource set, and may transmit the coded shaped bits via the resource set.

[0041] Various aspects of the present disclosure are first described in the context of a wireless communication system. Various aspects of the present disclosure are then discussed with reference to encoding processes and process flows. Various aspects of the present disclosure are further illustrated and described by reference to apparatus diagrams, system diagrams, and flow charts related to resource mapping for PAS.

[0042] Figure 1 An example of a wireless communication system 100 supporting resource mapping for PAS according to one or more aspects of the present disclosure is illustrated. The wireless communication system 100 may include one or more network entities 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a Long Term Evolution (LTE) network, an Advanced LTE (LTE-A) network, an LTE-A Pro network, a New Radio (NR) network, or a network operating according to other systems and radio technologies, including future systems and radio technologies not explicitly mentioned herein.

[0043] The network entities 105 may be dispersed throughout a geographic area to form the wireless communication system 100 and may include devices in different forms or with different capabilities. In various examples, the network entities 105 may be referred to as network elements, mobility elements, radio access network (RAN) nodes, or network equipment, among other nomenclature. In some examples, the network entities 105 and the UEs 115 may communicate wirelessly via one or more communication links 125 (e.g., radio frequency (RF) access links). For example, the network entities 105 may support a coverage area 110 (e.g., a geographic coverage area) within which the UEs 115 and the network entities 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area within which the network entities 105 and the UEs 115 may support signal communication according to one or more radio access technologies (RATs).

[0044] The UEs 115 may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be stationary or mobile or both stationary and mobile at different times. The UEs 115 may be devices that take different forms or have different capabilities. Figure 1 Some example UEs 115 are illustrated in FIG. The UEs 115 described herein may be capable of supporting communications with various types of devices, such as Figure 1 Other UEs 115 or network entities 105 are shown.

[0045] As described herein, a node of the wireless communication system 100 (which may be referred to as a network node or 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, the node may be a UE 115. As another example, the node may be a network entity 105. As another example, a first node may be configured 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 other aspects of this example, the first node, the second node, and the third node may be different relative to these examples. Similarly, references to UE 115, network entity 105, apparatus, device, computing system, etc. may include disclosure of UE 115, network entity 105, apparatus, device, computing system, etc. as nodes. For example, a disclosure that UE 115 is configured to receive information from network entity 105 also discloses that the first node is configured to receive information from the second node.

[0046] In some examples, network entities 105 can communicate with core network 130, with each other, or both. For example, network entities 105 can communicate with core network 130 via one or more backhaul communication links 120 (e.g., according to S1, N2, N3, or other interface protocols). In some examples, network entities 105 can communicate with each other via backhaul communication links 120 (e.g., according to X2, Xn, or other interface protocols), directly (e.g., directly between network entities 105) or indirectly (e.g., via core network 130). In some examples, network entities 105 can communicate with each other via midhaul communication links 162 (e.g., according to a midhaul interface protocol) or fronthaul communication links 168 (e.g., according to a fronthaul interface protocol), or any combination thereof. Backhaul communication links 120, midhaul communication links 162, or fronthaul communication links 168 can be or include one or more wired links (e.g., electrical links, fiber optic links), one or more wireless links (e.g., radio links, wireless optical links), etc., or various combinations thereof. UE 115 may communicate with core network 130 via communication link 155 .

[0047] 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, a Node B, an evolved Node B (eNB), a next-generation Node B, or a gigabit Node B (any of which may be referred to as a gNB), a 5G NB, a next-generation eNB (ng-eNB), a Home Node B, a Home evolved Node B, or other suitable terminology). In some examples, the network entity 105 (e.g., a base station 140) may be implemented in a converged (e.g., monolithic, stand-alone) base station architecture that may be configured to utilize a protocol stack that is physically or logically integrated within a single network entity 105 (e.g., a single RAN node, such as the base station 140).

[0048] In some examples, the network entity 105 can be implemented in a disaggregated architecture (e.g., a disaggregated base station architecture, a disaggregated RAN architecture) that can be configured to utilize a protocol stack that is physically or logically distributed between two or more network entities 105, such as an integrated access backhaul (IAB) network, an open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance), or a virtualized RAN (vRAN) (e.g., a cloud RAN (C-RAN)). For example, the network entity 105 can include one or more of the following: a central unit (CU) 160, a distributed unit (DU) 165, a radio unit (RU) 170, a RAN intelligent controller (RIC) 175 (e.g., a near real-time RIC (near RT RIC), a non-real-time RIC (non-RT RIC)), a service management and orchestration (SMO) 180 system, or any combination thereof. The RU 170 may also be referred to as a radio head, smart radio head, remote radio head (RRH), remote radio unit (RRU), or transmit receive point (TRP). One or more components of the network entity 105 in the disaggregated RAN architecture may be co-located, or one or more components of the network entity 105 may be located in distributed locations (e.g., separate physical locations). In some examples, one or more network entities 105 of the disaggregated RAN architecture may be implemented as virtual units (e.g., virtual CU (VCU), virtual DU (VDU), virtual RU (VRU)).

[0049] The functional split between CU 160, DU 165, and RU 170 is flexible and can support different functions depending on which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, and any combination thereof) are performed at CU 160, DU 165, or RU 170. For example, a functional split of the protocol stack can be employed between CU 160 and DU 165 such that CU 160 can support one or more layers of the protocol stack and DU 165 can support one or more different layers of the protocol stack. In some examples, CU 160 can host higher protocol layer (e.g., Layer 3 (L3), Layer 2 (L2)) functions and signaling (e.g., Radio Resource Control (RRC), Service Data Adaptation Protocol (SDAP), 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 (L1) (e.g., physical (PHY) layer) or L2 (e.g., radio link control (RLC) layer, medium access control (MAC) layer) functions 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 the DU 165 and the 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 more different cells (e.g., via one or more RUs 170). In some cases, the functional split between the CU 160 and the DU 165 or between the DU 165 and the RU 170 can be within the protocol layer (e.g., some functions of the protocol layer can be performed by one of the CU 160, DU 165, or RU 170, while other functions of the protocol layer are performed by a different one of the CU 160, DU 165, or RU 170). The CU 160 can be further functionally split into CU control plane (CU-CP) and CU user plane (CU-UP) functions. The CU 160 can be connected to one or more DUs 165 via midhaul communication links 162 (e.g., F1, F1-c, F1-u), and the DU 165 can be connected to one or more RUs 170 via fronthaul communication links 168 (e.g., open fronthaul (FH) interface). In some examples, midhaul communication link 162 or fronthaul communication link 168 may be implemented according to an interface (e.g., a channel) between layers of a protocol stack supported by respective network entities 105 that communicate via such communication links.

[0050] In some wireless communication systems (e.g., wireless communication system 100), the infrastructure and spectrum resources for radio access may support wireless backhaul link capabilities to supplement wired backhaul connections, thereby providing an IAB network architecture (e.g., to the 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 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). One or more donor network entities 105 (e.g., IAB donors) may communicate 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). The IAB node 104 may include an IAB mobile terminal (IAB-MT) controlled (e.g., scheduled) by the DU 165 of the coupled IAB donor. The IAB-MT may include an independent set of antennas for relaying communications with the UE 115, or may share the same antennas of the IAB node 104 (e.g., of the RU 170) for access via the DU 165 of the IAB node 104 (e.g., referred to as a virtual IAB-MT (vIAB-MT)). In some examples, the IAB node 104 may include a DU 165 that supports communication links with additional entities (e.g., IAB node 104, UE 115) within a relay chain or configuration (e.g., downstream) of the access network. In such cases, one or more components of the decomposed RAN architecture (e.g., one or more IAB nodes 104 or components of the IAB node 104) may be configured to operate according to the techniques described herein.

[0051] For example, an access network (AN) or RAN may include communications between an access node (e.g., an IAB donor), an IAB node 104, and one or more UEs 115. The IAB donor may facilitate connectivity between the core network 130 and the AN (e.g., via a wired or wireless connection to the core network 130). That is, the IAB donor may refer to a RAN node that has a wired or wireless connection to the core network 130. The IAB donor may include a CU 160 and at least one DU 165 (e.g., and RU 170), wherein the CU 160 may communicate with the core network 130 via an interface (e.g., a backhaul link). The IAB donor and the IAB node 104 may communicate via the F1 interface according to a protocol that defines signaling messages (e.g., the F1 AP protocol). Additionally or alternatively, CU 160 may communicate with the core network via an interface (which may be an example of a portion of a backhaul link) and may communicate with other CUs 160 (e.g., CUs 160 associated with alternative IAB donors) via an Xn-C interface (which may be an example of a portion of a backhaul link).

[0052] An IAB node 104 may refer to a RAN node that provides IAB functionality (e.g., access for UE 115, wireless self-backhaul capabilities, etc.). The DU 165 may act as a distributed scheduling node toward child nodes associated with the IAB node 104, and the IAB-MT may act as a scheduled node toward a parent node associated with the IAB node 104. That is, an IAB donor may be referred to as a parent node that communicates with one or more child nodes (e.g., the IAB donor may relay transmissions for UEs through one or more other IAB nodes 104). Additionally or alternatively, depending on the relay chain or configuration of the AN, the IAB node 104 may also be referred to as a parent node or child node of other IAB nodes 104. Thus, the IAB-MT entity of the IAB node 104 may provide a Uu interface for the child IAB node 104 to receive signaling from the parent IAB node 104 , and a DU interface (eg, DU 165 ) may provide a Uu interface for the parent IAB node 104 to signal to the child IAB node 104 or the UE 115 .

[0053] For example, IAB node 104 may be referred to as a parent node supporting communications for child IAB nodes, or as a child IAB node associated with an IAB donor, or both. The IAB donor may include a CU 160 having a wired or wireless connection to the core network 130 (e.g., backhaul communication link 120) and may serve as a parent node for IAB node 104. For example, the DU 165 of the IAB donor may relay transmissions to UE 115 via IAB node 104, or may directly signal transmissions to UE 115, or both. The CU 160 of the IAB donor may signal the establishment of a communication link to IAB node 104 via the F1 interface, and IAB node 104 may schedule transmissions (e.g., transmissions relayed from the IAB donor to UE 115) via the DU 165. That is, data may be relayed to and from IAB node 104 via signaling via the NR Uu interface of the MT to IAB node 104. Communications with the IAB node 104 may be scheduled by the DU 165 of the IAB donor, and communications with the IAB node 104 may be scheduled by the DU 165 of the IAB node 104 .

[0054] Where the techniques described herein are applied in the context of a disaggregated RAN architecture, one or more components of the disaggregated RAN architecture may be configured to support resource mapping for PAS 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., an IAB node 104, a DU 165, a CU 160, a RU 170, a RIC 175, a SMO 180).

[0055] 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 "device" may also be referred to as a unit, a station, a terminal, or a client, etc. 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, UE 115 may include or may be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communication (MTC) device, etc., which may be implemented in various objects, such as appliances or vehicles, meters, etc.

[0056] The UE 115 described herein may be capable of communicating with various types of devices, such as other UEs 115, which may sometimes act as relays, as well as network entities 105 and network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, etc. Figure 1 shown.

[0057] The UE 115 and the network entity 105 may wirelessly communicate with each other via one or more communication links 125 (e.g., access links) using resources associated with one or more carriers. The term "carrier" may refer to a set of RF spectrum resources having a physical layer structure defined for supporting the communication link 125. For example, a carrier used for the communication link 125 may include a portion of an RF spectrum band (e.g., a bandwidth portion (BWP)) that operates according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling for coordinating carrier operations, user data, or other signaling. The wireless communication system 100 may support communications with the UE 115 using carrier aggregation or multi-carrier operation. Depending on the carrier aggregation configuration, the UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation may be used for both frequency division duplex (FDD) and time division duplex (TDD) component carriers. Communication between the network entity 105 and other devices may refer to communication between those devices and any portion (e.g., entity, sub-entity) of the network entity 105. For example, the terms "send," "receive," or "communicate" when referring to the network entity 105 may refer to any portion of the network entity 105 (e.g., base station 140, CU 160, DU 165, RU 170) of the RAN communicating with another device (e.g., directly or via one or more other network entities 105).

[0058] In some examples, such as in a carrier aggregation configuration, a carrier may also have acquisition signaling or control signaling that coordinates the operation of other carriers. A carrier may be associated with a frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute RF Channel Number (EARFCN)) and may be identified according to a channel raster used for discovery by UE 115. A carrier may operate in a standalone mode, in which case initial acquisition and connection by UE 115 may occur via the carrier, or in a non-standalone mode, in which case a different carrier (e.g., of the same or different radio access technology) is used to anchor the connection.

[0059] The communication link 125 shown in the wireless communication system 100 may include downlink transmissions (e.g., forward link transmissions) from the network entity 105 to the UE 115, uplink transmissions (e.g., return link transmissions) from the UE 115 to the network entity 105, or both, among other transmission configurations. A carrier may carry either downlink communications or uplink communications (e.g., in an FDD mode), or may be configured to carry both downlink and uplink communications (e.g., in a TDD mode).

[0060] A carrier may be associated with a particular bandwidth of the RF spectrum, and in some examples, the carrier bandwidth may be referred to as the "system bandwidth" of the carrier or wireless communication system 100. For example, the carrier bandwidth may be one of a set of bandwidths of carriers for a particular radio access technology (e.g., 1.4 megahertz (MHz), 3 MHz, 5 MHz, 10 MHz, 15 MHz, 20 MHz, 40 MHz, or 80 MHz). Devices of the wireless communication system 100 (e.g., the network entity 105, the UE 115, or both) may have a hardware configuration that supports communications using a particular carrier bandwidth, or may be configured to support communications using one of the set of carrier bandwidths. In some examples, the wireless communication system 100 may include a network entity 105 or a UE 115 that supports concurrent communications using carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate using a portion (e.g., a sub-band, a BWP) or all of the carrier bandwidth.

[0061] The signal waveform transmitted via the carrier may include multiple subcarriers (e.g., using a multicarrier modulation (MCM) technique 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 the resource of one symbol period (e.g., the duration of one modulation symbol) and one subcarrier, in which case the symbol period and subcarrier spacing may be inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both), such that a relatively high number of resource elements (e.g., in the transmission duration) and a relatively high order modulation scheme may correspond to relatively high rate communications. Wireless communication resources may refer to a combination of RF spectrum resources, time resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial resources may increase the data rate or data integrity used for communications with UE 115.

[0062] One or more parameter sets for a carrier may be supported, and the parameter set may include subcarrier spacing (Δf) and cyclic prefix. A carrier may be divided into one or more BWPs with the same or different parameter sets. In some examples, a UE 115 may be configured with multiple BWPs. In some examples, a single BWP for a carrier may be active at a given time, and communications by the UE 115 may be constrained to one or more active BWPs.

[0063] The time interval for the network entity 105 or the UE 115 can be expressed as a multiple of a basic time unit, which can be, for example, a sampling period T s =1 / (Δf max ·N f ) seconds, for which Δf max It can represent the supported subcarrier spacing, and N f The supported discrete Fourier transform (DFT) size may be indicated. Time intervals of communication resources 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).

[0064] Each frame may include a plurality of consecutively numbered subframes or time slots, and each subframe or time 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 certain number of time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include a certain number of symbol periods (e.g., depending on the length of the cyclic prefix appended to the front of each symbol period). In some wireless communication systems 100, the time slot may be further divided into a plurality of mini-time slots associated with one or more symbols. Excluding the cyclic prefix, each symbol period may be associated with one or more (e.g., N f The duration of a symbol period may depend on the subcarrier spacing or the operating band.

[0065] A subframe, slot, mini-slot, or symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communication system 100 and may be referred to as a Transmit Time Interval (TTI). In some examples, the TTI duration (e.g., the number of symbol periods in a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs)).

[0066] Physical channels may be multiplexed using carriers for communication according to various techniques. Physical control channels and physical data channels may be multiplexed for signaling via downlink carriers, for example, using one or more of time division multiplexing (TDM), frequency division multiplexing (FDM), or hybrid TDM-FDM techniques. A control region (e.g., a control resource set (CORESET)) of a physical control channel may be defined by a set of symbol periods and may extend across the system bandwidth of a carrier or a subset of that bandwidth. One or more control regions (e.g., CORESETs) may be configured for a group of UEs 115. For example, one or more of UEs 115 may monitor or search the control region for control information according to one or more search space sets, and each search space set may include one or more control channel candidates in one or more aggregation levels arranged in a cascaded manner. The aggregation level of a control channel candidate may refer to the amount of control channel resources (e.g., control channel elements (CCEs)) associated with coded information for a control information format having a given payload size. The search space sets may include a common search space set configured for transmitting control information to multiple UEs 115 , and a UE-specific search space set for transmitting control information to a specific UE 115 .

[0067] The network entity 105 may provide communication coverage via one or more cells (e.g., macro cells, small cells, hotspots, or other types of cells, or any combination thereof). The term "cell" may refer to a logical communication entity used to communicate with the network entity 105 (e.g., using a carrier) and may be associated with an identifier (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID), or other cell identifier) used to distinguish between adjacent cells. In some examples, a cell may also refer to a coverage area 110 or a portion of a coverage area 110 (e.g., a sector) on which the logical communication entity operates. Depending on various factors such as the capabilities of the network entity 105, such cells may range from a smaller area (e.g., a structure, a subset of a structure) to a larger area. For example, a cell may be or may include a building, a subset of a building, or an external space between or overlapping coverage areas 110, etc.

[0068] A macro cell generally covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access to UEs 115 that have a service subscription with a network provider that supports the macro cell. Small cells may be associated with a lower-power network entity 105 (e.g., a lower-power base station 140) than a macro cell, and the small cell may operate using the same or different (e.g., licensed, unlicensed) frequency band as the macro cell. A small cell may provide unrestricted access to UEs 115 that have a service subscription with the network provider, or may provide restricted access to UEs 115 associated with the small cell (e.g., UEs 115 in a closed subscriber group (CSG), UEs 115 associated with users in a home or office). A network entity 105 may support one or more cells and may also use one or more component carriers to support communications via the one or more cells.

[0069] In some examples, a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., MTC, narrowband IoT (NB-IoT), enhanced mobile broadband (eMBB)) that may provide access to different types of devices.

[0070] In some examples, network entities 105 (e.g., base stations 140, RUs 170) can be mobile and, therefore, provide communication coverage for mobile coverage areas 110. In some examples, different coverage areas 110 associated with different technologies can overlap, but the different coverage areas 110 can be supported by the same network entity 105. In some other examples, overlapping coverage areas 110 associated with different technologies can be supported by different network entities 105. The wireless communication system 100 can include, for example, a heterogeneous network in which different types of network entities 105 provide coverage for various coverage areas 110 using the same or different radio access technologies.

[0071] Some UEs 115, such as MTC or IoT devices, may be low-cost or low-complexity devices and may provide automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC may refer to data communication technology that allows devices to communicate with each other or with a network entity 105 (e.g., base station 140) without human intervention. In some examples, M2M communication or MTC may include communication from devices that integrate sensors or meters to measure or capture information and relay such information to a central server or application that uses the information or presents it to a person interacting with the application. Some UEs 115 may be designed to collect information or implement automated behavior of machines or other devices. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wildlife monitoring, weather and geographic event monitoring, queue management and tracking, remote security sensing, physical access control, and transaction-based commercial charging.

[0072] The wireless communication system 100 may be configured to support ultra-reliable communication or low-latency communication or various combinations thereof. For example, the wireless communication system 100 may be configured to support ultra-reliable low-latency communication (URLLC). The UE 115 may be designed to support ultra-reliable, low-latency or critical functionality. Ultra-reliable communication may include private or group communication and may be supported by one or more services such as push-to-talk, video or data. Support for ultra-reliable, low-latency functionality 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.

[0073] In some examples, a UE 115 can be configured to support communication directly with other UEs 115 via a device-to-device (D2D) communication link 135 (e.g., according to a peer-to-peer (P2P), D2D, or sidelink protocol). In some examples, one or more UEs 115 in a group performing D2D communication can be within a coverage area 110 of a network entity 105 (e.g., a base station 140, a RU 170), which can support aspects of such D2D communication configured (e.g., scheduled) by the network entity 105. In some examples, one or more UEs 115 in such a group can be outside the coverage area 110 of the network entity 105 or can otherwise be unable or not configured to receive transmissions from the network entity 105. In some examples, a group of UEs 115 communicating via D2D communication can 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, network entity 105 may facilitate scheduling of resources for D2D communications. In some other examples, D2D communications may be performed between UEs 115 without involving network entity 105.

[0074] In some systems, the D2D communication link 135 can be an example of a communication channel (such as a sidelink communication channel) between vehicles (e.g., UE 115). In some examples, the vehicles can communicate using vehicle-to-everything (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination thereof. The vehicles can signal information related to traffic conditions, signal scheduling, weather, safety, emergency situations, or any other information related to the V2X system. In some examples, the vehicles in the V2X system can communicate with roadside infrastructure (such as roadside units) or communicate with the network via one or more network nodes (e.g., network entity 105, base station 140, RU 170) using vehicle-to-network (V2N) communication, or both.

[0075] 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 a 5G core (5GC), which may include at least one control plane entity (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) for managing access and mobility and at least one user plane entity (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)) for routing packets or interconnecting to external networks. The control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for UEs 115 served by network entities 105 (e.g., base stations 140) associated with the core network 130. User IP packets may be delivered through the user plane entity, which may provide IP address allocation and other functions. The user plane entity may be connected to the IP services 150 of one or more network operators. IP services 150 may include access to the Internet, an intranet, an IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0076] The wireless communication system 100 can operate using one or more frequency bands that can range from 300 megahertz (MHz) to 300 gigahertz (GHz). Generally speaking, the region from 300 MHz to 3 GHz is referred to as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from about one decimeter to one meter in length. UHF waves can be blocked or redirected by buildings and environmental features (which can be referred to as clusters), but these waves can penetrate structures sufficiently for a macro cell to provide service to a UE 115 located indoors. Communication using UHF waves can be associated with smaller antennas and a shorter range (e.g., less than 100 kilometers) than communication using the smaller frequencies and longer wavelengths of the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0077] The wireless communication system 100 may also operate using a super high frequency (SHF) region (also known as a centimeter band) that may be in the range of 3 GHz to 30 GHz or an extremely high frequency (EHF) region (e.g., 30 GHz to 300 GHz) (also known as a millimeter band) of spectrum. In some examples, the wireless communication system 100 may support millimeter wave (mmW) communications between the UE 115 and the network entity 105 (e.g., base station 140, RU 170), and the EHF antennas of the corresponding devices may be smaller and closer together than the UHF antennas. In some examples, such technology may facilitate the use of antenna arrays within the device. However, the propagation of EHF transmissions may be affected by greater attenuation and a shorter range than SHF or UHF transmissions. The technology disclosed herein may be employed across transmissions using one or more different frequency regions, and the use of frequency bands specified across these frequency regions may vary by country or regulatory agency.

[0078] The wireless communication system 100 can utilize both licensed RF spectrum bands and unlicensed RF spectrum bands. For example, the wireless communication system 100 can use unlicensed bands (such as the 5 GHz Industrial, Scientific, and Medical (ISM) band) to employ license assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology. When operating using unlicensed RF spectrum bands, devices such as the network entity 105 and the UE 115 can employ carrier sensing for conflict detection and avoidance. In some examples, operations using unlicensed bands can be based on carrier aggregation configuration (e.g., LAA) in combination with component carriers operating using licensed bands. Operations using unlicensed spectrum can include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among others.

[0079] A network entity 105 (e.g., a base station 140, a RU 170) or a UE 115 may be equipped with multiple antennas that can be used to employ techniques such as transmit diversity, receive diversity, multiple-input, multiple-output (MIMO) communications, or beamforming. The antennas of the network entity 105 or 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, the antennas or antenna arrays associated with the network entity 105 may be located at different geographical locations. The network entity 105 may include an antenna array having a set of multiple rows and columns of antenna ports that the network entity 105 can use to support beamforming for communications with the UE 115. Similarly, the UE 115 may include one or more antenna arrays that may support various MIMO or beamforming operations. Additionally or alternatively, the antenna panels may support RF beamforming for signals transmitted via the antenna ports.

[0080] The network entity 105 or the UE 115 may use MIMO communication to exploit multipath signal propagation and improve spectral efficiency by sending or receiving multiple signals via different spatial layers. Such a technique may be referred to as spatial multiplexing. The multiple signals may be sent, for example, by a transmitting device via different antennas or different combinations of antennas. Similarly, the multiple signals may be received by a receiving device via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry information associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers may be associated with different antenna ports for channel measurement and reporting. MIMO techniques include single-user MIMO (SU-MIMO), for which multiple spatial layers are sent to the same receiving device; and multi-user MIMO (MU-MIMO), for which multiple spatial layers are sent to multiple devices.

[0081] Beamforming (which may also be referred to as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can 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 can be achieved by combining signals communicated via antenna elements of an antenna array so that some signals propagating along a particular orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to signals communicated via antenna elements can include the transmitting device or the receiving device applying an amplitude offset, a phase offset, or both to signals carried via antenna elements associated with the device. The adjustments associated with each of these antenna elements can be defined by a set of beamforming weights associated with a particular orientation (e.g., relative to the antenna array of the transmitting device or the receiving device or relative to some other orientation).

[0082] The network entity 105 or the UE 115 may use beam sweeping techniques as part of a beamforming operation. For example, the network entity 105 (e.g., base station 140, RU 170) may use multiple antennas or antenna arrays (e.g., antenna panels) to perform beamforming operations for directional communication with the UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted multiple times by the network entity 105 along different directions. For example, the network entity 105 may transmit signals according to different sets of beamforming weights associated with different transmit directions. Transmissions along different beam directions may be used to identify (e.g., by a transmitting device (such as the network entity 105) or by a receiving device (such as the UE 115)) the beam direction for later transmission or reception by the network entity 105.

[0083] Some signals, such as data signals associated with a particular receiving device, may be transmitted by a transmitting device (e.g., transmitting network entity 105, transmitting UE 115) along a single beam direction (e.g., a direction associated with a receiving device (e.g., receiving network entity 105 or receiving UE 115)). In some examples, a beam direction associated with transmission along a single beam direction may be determined based on signals transmitted along one or more beam directions. For example, UE 115 may receive one or more of the signals transmitted by network entity 105 along different directions and may report to network entity 105 an indication of the signal received by UE 115 with the highest signal quality or other acceptable signal quality.

[0084] In some examples, transmission by a device (e.g., by network entity 105 or UE 115) may be performed using multiple beam directions, and the device may use a combination of digital precoding or beamforming to generate a combined beam for transmission (e.g., from network entity 105 to UE 115). UE 115 may report feedback indicating precoding weights for one or more beam directions, and the feedback may correspond to a configured set of beams across the system bandwidth or one or more subbands. Network entity 105 may transmit reference signals (e.g., cell-specific reference signals (CRS), channel state information reference signals (CSI-RS)), which may or may not be precoded. UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel codebook, a linear combination codebook, a port-selective codebook). Although these techniques are described with reference to signals sent by a network entity 105 (e.g., base station 140, RU 170) in one or more directions, UE 115 may use similar techniques to send signals multiple times in different directions (e.g., to identify a beam direction for subsequent transmission or reception by UE 115) or to send signals in a single direction (e.g., to send data to a receiving device).

[0085] A receiving device (e.g., UE 115) may perform reception operations according to multiple reception configurations (e.g., directional listening) when receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from a receiving device (e.g., network entity 105). For example, the receiving device may perform reception according to multiple reception directions by receiving via different antenna subarrays, processing received signals according to different antenna subarrays, receiving according to different receive beamforming weight sets applied to signals received at multiple antenna elements of an antenna array (e.g., different directional listening weight sets), or processing received signals according to different receive beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, any of which may be referred to as "listening" according to different reception configurations or reception directions. In some examples, the receiving device may use a single reception configuration to receive along a single beam direction (e.g., when receiving a data signal). A single receive configuration may be aligned along a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have the highest signal strength, highest signal-to-noise ratio (SNR), or other acceptable signal quality based on listening according to multiple beam directions).

[0086] The wireless communication system 100 may be a packet-based network operating according to a layered protocol stack. In the user plane, communications at the bearer or PDCP layer may be IP-based. The RLC layer may perform packet segmentation and reassembly for communication via logical channels. The MAC layer may perform priority handling and multiplexing of logical channels into transport channels. The MAC layer may also implement error detection techniques, error correction techniques, or both to support retransmissions to improve link efficiency. In the control plane, the RRC layer may provide for the establishment, configuration, and maintenance of RRC connections between the UE 115 and the network entity 105 or the core network 130 for radio bearers supporting user plane data. The PHY layer may map transport channels to physical channels.

[0087] UE 115 and network entity 105 may support retransmission of data to increase the likelihood of successful data reception. Hybrid Automatic Repeat Request (HARQ) feedback is a technique for increasing the likelihood of correctly receiving data via a communication link (e.g., communication link 125, 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 under poor radio conditions (e.g., low signal-to-noise ratio conditions). In some examples, a device may support same-slot HARQ feedback, in which case the device may provide HARQ feedback in a particular time slot for data received via previous symbols in that time slot. In some other examples, the device may provide HARQ feedback in subsequent time slots or based on some other time interval.

[0088] In wireless communication system 100, wireless devices (e.g., UE 115, network entity 105) may utilize PAS (which may also be referred to as probabilistic constellation shaping (PCS)) to modulate signals. For example, a transmitting device and a receiving device may exchange information in the form of transport blocks (TBs), where a TB may refer to a payload delivered from the MAC layer to the physical layer at the transmitting device or from the physical layer to the MAC layer at the receiving device. The transmitting device (e.g., UE 115, network entity 105) may use one or more distribution matchers to modulate and encode a set of bits corresponding to (e.g., included in, assigned to) a TB (e.g., a set of modulation symbols representing the TB) before transmitting the TB to a receiving device (e.g., UE 115, network entity 105). For example, the one or more distribution matchers may convert a set of bits (e.g., k input bits) into a corresponding sequence of symbols (e.g., n symbols), where different symbols within a pool of possible symbols may have different associated probabilities of selection based on a non-uniform probability distribution. For example, different symbols may correspond to different amplitudes (eg, the symbols may be ASK symbols), and based on a non-uniform probability distribution, some amplitudes may be more likely to be included in the symbol sequence than other amplitudes.

[0089] PAS can be used in conjunction with modulation schemes such as APSK or QAM schemes and can offer advantages over other unshaped modulation types. For example, when using unshaped modulation, each modulation symbol of a corresponding symbol constellation may be equally likely to be used and, therefore, may be used equally often over time. Unshaped modulation may be based on a uniform probability distribution, as the probability of use is uniform across different symbols of the symbol constellation. However, when using PAS, different modulation symbols of a corresponding symbol constellation may have different probabilities of use; therefore, the probability of use may be non-uniform across different symbols of the symbol constellation. PAS can improve spectral efficiency and allow communications to more closely approach Shannon capacity (e.g., the theoretical maximum amount of information or data that can be transmitted on a channel or medium). Additionally or alternatively, PAS can improve power consumption. For example, modulation symbols with smaller amplitudes may be used more frequently than modulation symbols with larger amplitudes.

[0090] Therefore, although the input set of k bits may be uniformly distributed, the corresponding sequence of n symbols obtained via distribution matching may be non-uniformly distributed, with some symbols being more likely to be included in the sequence of n symbols (e.g., appearing more often with the sequence) than other symbols. The non-uniform symbol sequence obtained via distribution matching can be converted into a corresponding bit sequence, and the corresponding bit sequence can be used for constellation mapping (e.g., mapping to modulation symbols (such as QAM symbols) to implement PAS). The symbols obtained via distribution matching may in some cases be referred to herein as intermediate symbols or shaped symbols (e.g., as opposed to modulation symbols that may be sent over the air). Similarly, at a receiving device, the symbols that undergo distribution dematching (which may be the inverse process of distribution matching) to obtain the corresponding bit sequence may in some cases be referred to herein as intermediate symbols or shaped symbols.

[0091] There may be a tradeoff with respect to the number of input bits k and output symbols n associated with the distribution matching process. For example, the rate penalty of transmission may vary with changes in k / n. Thus, for a given probability distribution, the rate penalty may decrease as n increases. However, encoding and decoding complexity and latency may increase as n increases. Additionally, performing distribution matching on a larger number of input bits to output a longer corresponding symbol sequence (e.g., larger k and n values) may improve spectral efficiency and rate penalty performance, but may introduce additional latency and complexity, compared to performing distribution matching on a smaller number of input bits to output a shorter corresponding symbol sequence (e.g., smaller k and n values).

[0092] Furthermore, the number n of output symbols for a given TB may depend on the number of resource elements (REs) to which the TB can be mapped, the number of transmission layers via which the TB can be transmitted, the modulation order of the modulation symbols, and the like. In other words, the block length of the distribution matcher (e.g., the number of symbols per sequence output by the distribution matcher) may be determined by the resources via which the TB is to be transmitted. When fewer resources are available for transmission, the block length may be reduced, and the rate loss may increase. Therefore, for limited resource transmission, if the block length is insufficient to avoid significant rate loss, performance may be degraded.

[0093] The techniques described herein support distribution matching across frequency bands (e.g., frequency subbands) or spatial layers and time domain resources (e.g., symbols, time slots) to obtain a distribution matcher output with an increased block length (e.g., compared to a distribution matcher output limited to the same frequency band or layer). A transmitting device (e.g., UE 115, network entity 105) may obtain a set of information bits to be transmitted to a receiving device (e.g., UE 115, network entity 105) via a set of time domain resources and one or more frequency subbands or one or more layers (e.g., spatial layers). The transmitting device may configure a corresponding distribution matcher for each frequency subband and each layer. The transmitting device may input information bits into each distribution matcher to generate a corresponding set of shaped symbols.

[0094] For example, a transmitting device may input a first subset of information bits into a first distribution matcher associated with a first frequency subband or layer, and may input a second subset of information bits into a second distribution matcher associated with a second frequency subband or layer. The first distribution matcher may output one or more sets (e.g., sequences) of shaped symbols (e.g., intermediate symbols) according to a first block length based on the first frequency subband or layer, where the block length indicates the number of symbols included in each shaped symbol set (e.g., a "block" may correspond to an intermediate symbol set output from the distribution matcher). The second distribution matcher may output one or more sets (e.g., sequences) of shaped symbols (e.g., intermediate symbols) according to a second block length based on the second frequency subband or layer. The first block length may be the same as or different from the second block length.

[0095] The transmitting device may concatenate the output of the first distribution matcher with the output of the second distribution matcher to obtain one or more sets of concatenated shaped symbols. For example, the transmitting device may segment each set of shaped symbols output from the first distribution matcher (e.g., each block) into a first set of sub-blocks, and may segment each set of shaped symbols output from the second distribution matcher (e.g., each block) into a second set of sub-blocks. The transmitting device may concatenate each sub-block from the first set of sub-blocks with a corresponding sub-block from the second set of sub-blocks to obtain one or more sets of concatenated shaped symbols. Thus, each set of concatenated shaped symbols may correspond to both the first frequency band or layer and the second frequency band or layer. Furthermore, each set of concatenated shaped symbols may be understood as a concatenated block (e.g., a block including the shaped symbols output from the first distribution matcher and the shaped symbols output from the second distribution matcher) and may have a block length that is greater than the first block length and greater than the second block length.

[0096] The transmitting device may perform symbol-to-bit conversion on the set of concatenated shaped symbols and input the converted bits into an encoder, such as an FEC encoder. The transmitting device may then map the encoder output to resources allocated for transmitting TBs corresponding to information bits (e.g., time domain resources, frequency domain resources corresponding to the first frequency subband and the second frequency subband, spatial domain resources corresponding to the first layer and the second layer). By concatenating the outputs from multiple different distribution matchers, the transmitting device may avoid the rate loss associated with relatively short block lengths, for example, even if the allocated resources are limited in number. Therefore, the transmitting device may apply PAS technology when transmitting TBs to improve spectral efficiency and increase the achievable capacity of the channel without degrading performance.

[0097] Figure 2 An example of a wireless communication system 200 that supports resource mapping for PAS according to one or more aspects of the present disclosure is illustrated. In some examples, the wireless communication system 200 can implement aspects of the wireless communication system 100. The wireless communication system 200 may include a device 205-a, which may include or may be an example of a network entity 105, a UE 115, or any other device capable of transmitting wireless signals (e.g., as described in reference to FIG. Figure 1 The wireless communication system 200 may also include a device 205-b, which may be an example of a network entity 105, a UE 115, or any other device capable of receiving wireless signals (e.g., as described with reference to FIG. Figure 1 described).

[0098] exist Figure 2In the example of FIG. 1 , device 205 - a may operate as a sending device and may utilize PAS when communicating information to a receiving device (such as device 205 - b) via communication link 125 - a, which may be as described in reference to FIG. Figure 1 An example of a communication link 125 is described. For example, device 205-a may process information bits of TB 210 to obtain a corresponding set of modulation symbols. Processing the information bits may involve shaping, encoding, and modulating the information bits before mapping them to a set of resources over which TB 210 is to be transmitted. Device 205-a may send signaling based on (e.g., including or otherwise modulated based on) the set of modulation symbols via communication link 125-a to convey TB 210 to device 205-b.

[0099] The information bits may be uniformly distributed. More specifically, the mapping table that maps the block of incoming information bits to the symbols to be transmitted may be configured such that the probability mass function (PMF) of the symbols across the constellation points of the modulation scheme is uniformly distributed. A constellation can be understood as a set of phase, frequency, and amplitude states of a signal (e.g., the signal transmitted by device 205-a), where a constellation point represents a symbol corresponding to a phase value, a frequency value, and an amplitude value. As part of the processing, device 205-a may use a shaper 215 between the source of information bits and the mapper to constellation symbols to shape the information bits. For example, probabilistic shaping may rely on using a code (referred to herein as a distribution matcher) to alter the probability distribution of constellation points. As an example, device 205-a may apply probabilistic shaping so that constellation points associated with lower energy are more likely to be used, while constellation points associated with higher energy are less likely to be used. Probabilistic shaping may reduce the gap (referred to as the shaping gap) between the actual achievable capacity of a channel (e.g., communication link 125-a) and the Shannon capacity of that channel.

[0100] In some cases, the shaper 215 may include or may be a as = k / n is an example of an amplitude shaper that maps k information bits to n amplitude symbols. The amplitude shaper can be configured so that low-amplitude symbols are utilized more frequently than high-amplitude symbols, which in some cases can improve signal quality at device 205-b, reduce transmit power of TB 210, etc. The non-uniform distribution of amplitude symbols generated by the amplitude shaper can more closely resemble the capacity-achieving input distribution than a uniform distribution.

[0101] Additionally or alternatively, the shaper 215 may include or may be an example of a shaping encoder. Here, the device 205-a may use the shaping encoder to mask the information bits and may jointly encode the shaped information bits and the information used for shaping. For example, the device 205-a may input the information bits into a log-likelihood ratio (LLR) generator to obtain LLR values for the information bits. The device 205-a may use a channel decoder to obtain (e.g., generate) shaping bits from the LLR values. The device 205-a may generate a bit mask from the shaping bits and may apply the bit mask to the information bits to obtain shaped information bits. The device 205-a may jointly encode the shaping bits and the shaped information bits and may map the bits to symbols to obtain shaped symbols.

[0102] In some examples, device 205-a may implement one or more distribution matchers to perform distribution matching as part of shaping (e.g., as part of shaper 215). The distribution matcher may include or may be an example of a constant component distribution matcher (CCDM), a block code distribution matcher, or a combination thereof. The distribution matcher may perform any number of distribution matching processes, each of which may accept as input a uniformly distributed bit sequence of length k and output a symbol sequence of length n (e.g., a sequence of n symbols) having a non-uniform probability distribution, such as with respect to Figure 3 As described in further detail, for example, a non-uniform probability distribution can be a PMF. In some examples, each distribution matcher can have a corresponding target distribution.

[0103] In some cases, the device 205-a may divide the information bits into subsets of information bits and may perform separate distribution matching processes on different subsets. For example, the device 205-a may utilize (e.g., configure) a corresponding distribution matcher for each frequency subband or each layer associated with the transmission of the TB 210, wherein each frequency subband or each layer may be further associated with a set of time domain resources (e.g., symbols, time slots). That is, because the PAS operation is performed on frequency bands or layers with similar frequency domain selectivity or spatial domain selectivity (e.g., with similar SNR values), the device 205-a may implement PAS per layer or per frequency band / subband by using the corresponding distribution matcher and the target distribution.

[0104] exist Figure 2In an example, device 205-a may implement a first distribution matcher associated with a first frequency subband of communication link 125-a and a second distribution matcher associated with a second frequency subband of communication link 125-a. Device 205-a may input a first subset of k1 information bits to the first distribution matcher and may input a second subset of k2 information bits to the second distribution matcher. The first distribution matcher may output a first one or more sets (e.g., sequences) of shaped symbols (e.g., intermediate symbols) according to a first block length and based on a first target distribution. Additionally, the second distribution matcher may output a second one or more sets (e.g., sequences) of shaped symbols (e.g., intermediate symbols) according to a second target distribution and a second block length based on a second frequency subband or layer. The first block length may be the same as or different from the second block length.

[0105] During distribution matching, each distribution matcher may transform k information bits into n intermediate symbols. For example, each sequence within the k1 input bits may be mapped to one or more corresponding intermediate symbols within the n-length sequence of intermediate symbols. Thus, in some cases, each intermediate symbol may represent multiple input bits. Based on a non-uniform probability distribution associated with (e.g., used by) the first distribution matcher, different intermediate symbols within the pool of possible (e.g., candidate) intermediate symbols may have different probabilities of being included in the n-length sequence of intermediate symbols—that is, some intermediate symbols may be more likely to be included than other intermediate symbols. In some cases, the intermediate symbols may be ASK symbols.

[0106] Performing distribution matching per frequency subband or per layer level may involve device 205-a configuring each distribution matcher with a corresponding set of parameters based on the corresponding frequency subband / layer and, in some cases, the corresponding target distribution. Channel quality, SNR, and other channel conditions may vary between frequency subbands / layers, which may affect the parameters to be used by the distribution matcher to achieve the target distribution. For example, for a Maxwell-Boltzmann target distribution, each distribution matcher may implement a different set of parameters based on the corresponding frequency subband. The parameter set may include target distribution parameters, one or more channel quality indicators (CQIs), block length (e.g., the number n of symbols per sequence output by the distribution matcher), etc., etc.

[0107] In some cases, the block length may be associated with the frequency subband configuration, so that each distribution matcher may be configured (e.g., by device 205-a) with a block length based on the corresponding frequency subband. That is, the distribution matcher block length may be associated with the corresponding bandwidth size, so that device 205-a may receive signaling (e.g., control signaling) indicating the size (e.g., bandwidth) of each frequency subband and may determine the block length based on the indicated size. For example, device 205-a may receive control signaling indicating the size of a first frequency subband. Device 205-a may map the size of the first frequency subband to a first block length and may configure a first distribution matcher with the first block length. The control signaling may further indicate the size of a second frequency subband and device 205-a may accordingly configure a second distribution matcher with a second block size.

[0108] In some cases, the control signaling may include or may be an example of downlink control information (DCI) (such as a DCI that schedules TB210). For example, device 205-a may receive DCI that allocates resources for TB 210 and includes an explicit indication of each frequency subband size, each distribution matcher block length, or a combination thereof. Alternatively, the frequency subband size may be implicitly associated with the bandwidth, for example, based on resource allocation indicated via DCI. As an example, the DCI may indicate the number of resource blocks (RBs) used for the bandwidth, where the number of RBs corresponds to the frequency subband size. For example, a number of RBs exceeding 160 RBs may correspond to eight frequency subbands, while 48 RBs to 160 RBs may correspond to four frequency subbands. Device 205-a may determine the frequency subband size based on the indicated number of RBs and may map the frequency subband size to the distribution matcher block length. Device 205-a may configure the distribution matcher associated with the frequency subband based on the distribution matcher block length.

[0109] Additionally or alternatively, the device 205-a may receive signaling (e.g., control signaling) indicating a parameter set for each distribution matcher, and may configure the distribution matcher according to the indicated parameter set. In some cases, if the bandwidth of the frequency subband associated with the distribution matcher is relatively large, indicating the parameter set may significantly increase the signaling overhead. Therefore, the signaling may include a compressed indication of the parameter set. For example, the signaling may implement a linear model or a cubic model to represent the distribution parameters (e.g., Maxwell-Boltzmann parameters). Additionally or alternatively, the signaling may indicate one or more CQIs within the bandwidth, or one or more relative values of the CQIs across the bandwidth, and the device 205-a may configure the distribution matcher with the parameters based on the indicated CQI.

[0110] The device 205 - a may split the first one or more sets of shaped symbols output from the first distribution matcher into a first set of sub-blocks, and may split the second one or more sets of shaped symbols output from the second distribution matcher into a second set of sub-blocks. Figure 3 As described, device 205-a may partition a set of shaped symbols (e.g., a sequence) into two or more sub-blocks, where each sub-block includes one or more shaped symbols from the set of shaped symbols. In some cases, the partitioning may be based on the size of the corresponding frequency sub-band. After partitioning each set of shaped symbols, device 205-a may concatenate one or more sub-blocks from a first set of sub-blocks with one or more sub-blocks from a second set of sub-blocks. Thus, device 205-a may obtain one or more sets of concatenated shaped symbols, where each set of concatenated shaped symbols includes a shaped symbol output from a first distribution matcher and a shaped symbol output from a second distribution matcher. Thus, each set of concatenated shaped symbols may correspond to both a first frequency sub-band and a second frequency sub-band.

[0111] The device 205-a may input the set of concatenated shaped symbols to the symbol-to-bit converter 220. The symbol-to-bit converter 220 may convert the intermediate symbols (e.g., the set of concatenated shaped symbols) into bits (e.g., a bit stream). In some cases, because the intermediate symbols are non-uniformly distributed, the bits output by the symbol-to-bit converter 220 may be different from the bits input to the first distribution matcher and the second distribution matcher. For example, the symbol-to-bit converter 220 may output a bit sequence including a number of (m-1)n bits, where m is the modulation order of the intermediate symbols (e.g., the number of different intermediate symbols in the intermediate symbol pool may be equal to 2). m ).

[0112] Device 205-a may input the converted bits to an encoder, such as FEC encoder 225. FEC encoder 225 may support error correction for the transmission of TB 210 based on coded redundancy. In some cases, device 205-a may additionally input an unshaped subset of information bits to FEC encoder 225, such as a subset of γ unshaped information bits. Based on the bits input to FEC encoder 225, FEC encoder 225 may generate systematic bits and parity bits. For example, for every (m-1+γ) input bits, FEC encoder 225 may generate m bits, where the additional bits may be parity bits.

[0113] The device 205-a may input the bits output from the FEC encoder 225 to a constellation mapper, which may be based on a modulation scheme according to which the device 205-a is to modulate and transmit the TB 210. That is, the device 205-a may modulate the TB 210 according to a modulation format to represent the information conveyed by the transmission. For example, OFDM modulation may be based on modulating individual subcarriers (e.g., using QAM modulation) and transmitting the modulated subcarriers in parallel (e.g., concurrently) using FDM techniques. In some examples, modulation symbols may refer to symbols based on any type of modulation, such as QAM symbols, binary phase shift keying (BPSK) symbols, quadrature phase shift keying (QPSK) symbols, amplitude and phase shift keying (APSK) symbols, etc. In Figure 2 In an example of FIG, device 205 - a may implement QAM modulation via QAM mapper 230. QAM mapper 230 may perform constellation mapping (e.g., mapping bits input to QAM mapper 230 to corresponding modulation symbols based on a symbol constellation associated with the modulation symbol). A subset of the bits input to QAM mapper 230 may be used to determine the amplitude of the modulation symbol to which it is mapped, and these bits may be referred to as amplitude bits. Another subset of the bits input to QAM mapper 230 may be used to determine the sign (e.g., polarity, phase, or both) of the modulation symbol to which it is mapped, and these bits may be referred to as sign bits.

[0114] Because at least a portion of the bits input to the QAM mapper 230 have been shaped, different modulation symbols within the symbol constellation used by the QAM mapper 230 may have different probabilities of being mapped to and transmitted over the air, and thus, PAS may be implemented. For example, because the amplitude bit is based on the k information bits that are subjected to distribution matching by the first distribution matcher and the second distribution matcher, the likelihood of a modulation symbol being mapped to may depend on the amplitude of the modulation symbol (e.g., a lower amplitude modulation symbol that may be closer to the center of the symbol constellation is more likely to be mapped than a higher amplitude modulation symbol that may be further away from the center of the symbol constellation). In some cases, the device 205-a may multiply the amplitude bit by the flag bit and map the resulting product to a modulation symbol.

[0115] The modulation symbols corresponding to the TB 210 may be output by the QAM mapper 230. The device 205-a may map the modulation symbols to a set of resources for transmission via the communication link 125-a. For example, the set of resources may be those resources allocated (e.g., scheduled) to the device 205-a (e.g., via a DCI) for transmission of the TB 210. In some cases, the device 205-a may map the modulation symbols to the set of resources according to a mapping order (e.g., frequency first, time second). Here, the device 205-a may map the modulation symbols to frequency domain resources before mapping them to time domain resources. The device 205-a may then transmit the modulated symbols via the set of resources according to the mapping to convey the information represented by the bits of the TB 210.

[0116] Device 205-b may receive modulation symbols corresponding to TB 210 via communication link 125-a. Device 205-b may perform a decoding operation to process TB 210 (e.g., obtain bits of TB 210 based on the corresponding modulation symbols). The decoding operation performed by device 205-b may be the inverse of the processing performed by device 205-a. For example, device 205-b may input the received modulation symbols into a bit-by-bit demapper 235 to obtain a set of bits corresponding to the modulation symbols. The set of bits may include systematic bits and parity bits. Device 205-b may input the set of bits into an FEC decoder 240 to extract information bits, after which device 205-b may convert the information bits into symbols via a bit-to-symbol converter 245. The bit-to-symbol converter 245 may output intermediate symbols (e.g., shaped symbols) corresponding to the shaped symbols output by the first and second distribution matchers of device 205-a.

[0117] Device 205-b may implement a deshaper 250 to recover the original information bits sent by device 205-a. For example, deshaper 250 may recover the shaped information and the shaped bits, and may generate a demasking vector from the shaped bits and apply the demasking vector to the shaped information bits to recover the original information bits. Additionally, deshaper 250 may utilize one or more distributed dematching processes. The distributed dematching process may accept an input sequence of intermediate symbols (e.g., n intermediate symbols) from bit-to-symbol converter 245 and output a corresponding set of bits (e.g., k bits). To perform distributed dematching, device 205-b may include any number of distributed dematchers, which in some cases may be equal to the number of distributed matchers in device 205-a. That is, device 205-b may implement a corresponding distributed dematcher for each frequency subband or layer over which it receives TB 210, which may be equal to the number of distributed matchers utilized by device 205-a for transmitting TB 210. In any case, device 205 - b may perform distributed dematching to obtain the original information bits from the set of intermediate symbols.

[0118] Figure 3 An example of an encoding process 300 that supports resource mapping for PAS according to one or more aspects of the present disclosure is illustrated. In some examples, the encoding process 300 may be implemented by aspects of the wireless communication system 100 and the wireless communication system 200. For example, a transmitting device (e.g., device 205-a) may encode a message using PAS according to the encoding process 300 for transmission to a receiving device (e.g., device 205-b). The transmitting device may implement the encoding process 300 to perform cross-frequency and cross-time domain distribution matching and resource mapping according to the techniques described herein. In some examples, the receiving device may perform decoding operations including inverse operations corresponding to the operations of the encoding process 300.

[0119] The encoding process 300 may include several stages in which a transmitting device processes a set of k information bits (e.g., corresponding to a TB) for transmission to a receiving device. In some examples, the transmitting device may transmit the TB as a set of CBs, where each CB may correspond to a portion of the information bits of the TB. In such examples, the transmitting device may process each CB individually according to the encoding process 300.

[0120] For example, the encoding process 300 may include: distribution matching, block segmentation, sub-block concatenation, FEC, and resource mapping. Additionally, it should be understood that the encoding process 300 is for illustrative purposes only, and some stages may be removed or additional stages may be included, such as appending one or more CRC bits, low-density parity-check code (LDPC) encoding, and constellation mapping (e.g., mapping bits or groups of bits to corresponding modulation symbols), among other possible stages.

[0121] The transmitting device may obtain a set of k information bits to be sent to the receiving device. In some cases, the transmitting device may determine a set of resources (e.g., time domain resources, frequency domain resources) via which the information bits are to be sent. For example, the transmitting device may receive control signaling for scheduling the transmission of information bits, wherein the control signaling indicates a set of resources allocated for transmission. After obtaining the set of k information bits, the transmitting device may divide the k information bits into two or more subsets via the demultiplexer 305. Figure 3 In the example of , the demultiplexer 305 may output a first subset of information bits and a second subset of information bits. The number of bits included in the first subset of bits may be represented by k1 and the number of bits included in the second subset of bits may be represented by k2 (eg, k=k1+k2).

[0122] The transmitting device may utilize one or more distribution matchers, such as distribution matcher 310-a and distribution matcher 310-b, as part of the encoding process 300. Each distribution matcher 310 may be a reference Figure 2 An example of a distribution matcher is described, and may correspond to a corresponding subband or layer, for example, based on a set of resources allocated for transmission. In addition, each distribution matcher 310 may be configured (e.g., by a transmitting device) according to a corresponding parameter set (e.g., based on a corresponding subband or layer). That is, because distribution matcher 310-a and distribution matcher 310-b correspond to different frequency subbands, distribution matcher 310-a and distribution matcher 310-b may have different configurations. For example, distribution matcher 310-a may operate according to a first block length based on the size of a first frequency subband associated with distribution matcher 310-a (e.g., the number of symbols of each sequence output by distribution matcher 310-a). Distribution matcher 310-a may achieve a first target distribution (e.g., a probability distribution). Distribution matcher 310-b may operate according to a second block length based on the size of a second frequency subband associated with distribution matcher 310-b, and may achieve a second target distribution. In some examples, the first block length and the second block length may be based on the number n of time domain resources in the resource set. t and the number of frequency domain resources n f .

[0123] The transmitting device may divide the k information bits into a first subset and a second subset so that each subset of the information bits is input into a different distribution matcher 310. In some examples, the values of k1 and k2 may depend on the first block length of the first distribution matcher 310-a and the second block length of the distribution matcher 310-b, respectively. For example, the first subset of information bits may be input into the distribution matcher 310-a, which may transform the k1 information bits into a first set of intermediate symbols. As discussed herein, the intermediate symbols may be referred to or understood as shaped symbols, and the shaped symbol set (e.g., the intermediate symbol set) may be referred to or understood as a sequence (e.g., a block) of intermediate symbols, etc. The number of intermediate symbols within the first set of intermediate symbols may be represented by n1 (e.g., the first set of intermediate symbols may include n1 intermediate symbols).

[0124] During distribution matching, a sequence of bits within the k1 input bits may each be mapped to one or more corresponding intermediate symbols within a sequence of n1 lengths of intermediate symbols. The n1 intermediate symbols output from the distribution matcher 310-a may be referred to as a first set of shaped symbols (e.g., shaped symbol set 315-a) and may correspond to a first subset of information bits. The k2 information bits may be input to the distribution matcher 310-b, which may output n2 intermediate symbols corresponding to a second subset of information bits. The n2 intermediate symbols may be referred to as a second set of shaped symbols (e.g., shaped symbol set 315-b). Although Figure 3A single set of n symbols output from each distribution matcher 310 is illustrated, but it should be understood that the encoding process 300 is applicable to any number of sets of symbols output from any number of distribution matchers.

[0125] In some cases, the number n of symbols included in each shaped symbol set 315 may be based on the number n of time domain resources. t and the number of frequency domain resources n allocated for transmission f And based on the associated frequency sub-band size. For example, based on the first subset n of time domain resources t1 and the first subset n of frequency domain resources f1 , the shaped symbol set 315-a may include n1 shaped symbols, where n1=n f1 *n t1 That is, the number n1 of shaped symbols in the shaped symbol set 315-a may be based on the product of the number of time domain resources in the first subset of time domain resources and the number of frequency domain resources in the first subset of frequency domain resources. f1 The number of frequency domain resources in the allocated frequency resource set n may be determined based on the size of the first frequency sub-band. f According to the size of the first frequency sub-band, the first frequency sub-band may have n f1 frequency domain resources.

[0126] Similarly, the set of shaped symbols 315-b may include a second subset n based on the time domain resources. t2 and the second subset n of frequency domain resources f2 n2 shaped symbols, where n2 = n f2 *n t2 And n f =n f1 +n f2 , and where n f2 The frequency domain resources are based on the size of the second frequency subband. In some cases, the first subset of time domain resources can be equal to the second subset of time domain resources, such that n t1 =n t2 , although in other cases, n t1 and n t2 It can be different.

[0127] In order to perform cross-domain (eg, cross-frequency domain and cross-time domain) distribution matching and resource mapping, the transmitting device may respectively select the first frequency sub-band size and the second frequency sub-band size (eg, based on n f1 and n f2 ) to split the output of each distribution matcher 310. The transmitting device may transform the shaped symbol set 315-a into n in the time-frequency matrix representation 320-a of the resource grid.t1 time blocks and n f1 That is, the transmitting device may map the shaped symbol set 315-a to a time-frequency matrix representation 320-a, wherein the time-frequency matrix representation 320-a has a size n. t1 (e.g., on the x-axis) multiply by n f1 (eg, on the y-axis). The transmitting device may transform the shaped symbol set 315-b into n in the time-frequency matrix representation 320-b of the resource grid. t2 time blocks and n f2 A collection of frequency blocks.

[0128] Based on the mapping, the transmitting device may partition the time-frequency matrix representation 320-a into a set of sub-blocks 325-a and may partition the time-frequency matrix representation 320-b into a set of sub-blocks 325-b. In some cases, the transmitting device may partition the time-frequency matrix representation 320 by duration (e.g., by time domain resources or by a portion of a time domain resource), for example, based on the duration for which the transmitting device is to perform FEC. Figure 3 In the example of , the partitioning is performed by time symbol, so that each sub-block 325 can correspond to one time domain symbol of the time domain resource set. Therefore, the time-frequency matrix representation 320-a can be partitioned into n t1 Sub-blocks 325-a, and each sub-block 325-a may have equal n f1 The length of (eg, may include n output from distribution matcher 310-a) f1 shaped symbols). Similarly, the time-frequency matrix representation 320-b can be divided into n t2 Each sub-block 325-b may have a length n f2 (For example, it may include n output from distribution matcher 310-b f2 shaped symbols).

[0129] The transmitting device may concatenate segments from the output of each distribution matcher 310. For example, the transmitting device may concatenate one or more sub-blocks 325-a with one or more sub-blocks 325-b to obtain one or more sets 330 of concatenated shaped symbols. Each set 330 of concatenated shaped symbols may include n f1 +n f2 The number of shaped symbols may be understood as the combined block length. Furthermore, each set 330 of concatenated shaped symbols may be associated with a first frequency subband and a second frequency subband, because each set 330 of concatenated shaped symbols includes the shaped symbols output from distribution matcher 310-a and the shaped symbols output from distribution matcher 310-b.

[0130] The transmitting device may perform FEC encoding on each set 330 of concatenated shaped symbols via an FEC encoder 335, such that FEC encoding is performed across the frequency domain of the first frequency subband and the second frequency subband. Each set 330 of concatenated shaped symbols may be considered a pre-FEC block. In some cases, the transmitting device may input each set 330 of concatenated shaped symbols into a symbol-to-bit converter to convert the shaped symbols into bits before FEC encoding, and may input the converted bits into the FEC encoder 335. Additionally or alternatively, the transmitting device may input unshaped information bits from the set of information bits into the FEC encoder 335, for example, along with the shaped symbols or the converted bits. The FEC encoder 335 may generate and output a set of coded bits corresponding to the set of information bits, which may include parity bits and systematic bits.

[0131] In some examples, the transmitting device may input the bits output from the FEC encoder 335 to a constellation mapper, which may perform constellation mapping (e.g., mapping the bits input to the constellation mapper to corresponding modulation symbols based on a symbol constellation associated with the modulation symbol). A subset of the bits input to the constellation mapper may be used to determine the amplitude of the modulation symbol to which it is mapped, and these bits may be referred to as amplitude bits. Another subset of the bits input to the constellation mapper may be used to determine the sign (e.g., polarity, phase, or both) of the modulation symbol to which it is mapped, and these bits may be referred to as sign bits. In some cases, the transmitting device may multiply the amplitude bit by the sign bit and map the resulting product to a modulation symbol.

[0132] After encoding (and, in some cases, constellation mapping), the transmitting device may map the set of concatenated shaped symbols output from the FEC encoder 335 to a set of resources according to a resource mapping scheme. The resource mapping scheme may include an ordering by which the transmitting device assigns resources in the set of resources. The set of resources may be represented by a resource grid 340, which includes n t time domain resources (for example, because n t1 =n t2 ) and n f =n f1 +n f2 Frequency domain resources. The transmitting device may map the shaped symbols in the set of concatenated shaped symbols to the resource grid in the order of frequency first and time second. For example, the transmitting device may map the first symbol to the first frequency resource and the first time resource, the second symbol to the second frequency resource and the first time resource, the third symbol to the third frequency resource and the first time resource, and so on, until the nth symbol. t In some cases, resource grid 340 may also include multiple layers, and resource mapping may be performed according to an ordering of layer first, frequency second, and time third.

[0133] The transmitting device may transmit the shaped symbols corresponding to the information bit set via the resource set.The receiving device may perform a decoding operation including an inverse operation corresponding to the operation of the encoding process 300 to obtain the information bit set.

[0134] Figure 4 An example of an encoding process 400 that supports resource mapping for PAS according to one or more aspects of the present disclosure is illustrated. In some examples, encoding process 400 may be implemented by aspects of wireless communication system 100 and wireless communication system 200. For example, a transmitting device (e.g., device 205-a) may encode a message using PAS according to encoding process 400 for transmission to a receiving device (e.g., device 205-b). Encoding process 400 may occur as part of encoding process 300. That is, encoding process 400 illustrates an additional processing stage that may be added to encoding process 300, by which the transmitting device processes a set of k information bits (e.g., corresponding to a TB) for transmission to a receiving device via a set of resources (e.g., time-frequency resources).

[0135] For example, although not illustrated, as shown in FIG. Figure 3 As described, the encoding process 400 may include a demultiplexer 305 and two (or more) distribution matchers 310, and the transmitting device may map the output of the distribution matcher 310 to a corresponding time-frequency matrix representation 320. The transmitting device may divide each time-frequency matrix representation 320 into a first set 325-a of sub-blocks and a second set 325-b of sub-blocks. The transmitting device may concatenate a first sub-block in the first set of sub-blocks with a second sub-block in the second set of sub-blocks to obtain a set 405 of concatenated shaped symbols. Therefore, as Figure 4 The encoding process 400 illustrated in FIG. 4 may begin after the transmitting device has concatenated the shaped symbols output from the corresponding distribution matcher. Figure 4 An example of one set 405 of concatenated shaped symbols is illustrated, but the techniques described herein may be applied to any number of concatenated shaped symbols 405 .

[0136] The transmitting device may input the concatenated set of shaped symbols 405 into a symbol-to-bit converter 410 to obtain a bit stream 415 of shaped bits corresponding to the shaped symbols. Figure 3 As discussed, the symbol-to-bit converter 410 may output a bit sequence (e.g., a bit stream 415) comprising a number of bits (m-1)n, where n is the number of shaped symbols included in the set of concatenated shaped symbols 405, and m is the modulation order of the shaped symbol. The bit stream 415 may include bits corresponding to each subband (e.g., reference Figure 3bits associated with the first and second frequency sub-bands in question).

[0137] The transmitting device may perform a pre-FEC interleaving operation on the bitstream 415 to obtain an interleaved bitstream 420. In some examples, the pre-FEC interleaving operation may be performed according to subband-level interleaving or RB-level interleaving, where bits corresponding to different subbands (or RBs) of the bitstream 415 are interleaved based on the subband. Figure 4 In the example of [ 415 ], bits corresponding to a first frequency subband and bits corresponding to a second frequency subband may be interleaved within bitstream 420. In other examples, more than two frequency subbands may be associated with encoding process 400. In such an example, bitstream 415 may include one or more bits associated with a first frequency subband (denoted by s1), one or more bits associated with a second frequency subband (denoted by s2), one or more bits associated with a third frequency subband (denoted by s3), and one or more bits associated with a fourth frequency subband (denoted by s4). Prior to interleaving, bits within bitstream 415 may be ordered according to corresponding frequency subbands, e.g., [s1, s2, s3, s4]. Bitstream 415 may be input to a subband-level interleaver, which may output an interleaved bitstream 420; bits within bitstream 420 may be ordered according to [s3, s2, s4, s1]. Similar techniques may be applied per RB for an RB-level interleaver.

[0138] Additionally or alternatively, for more than one set 405 of concatenated shaped symbols, the transmitting device may perform pre-FEC interleaving across the sets 405 of concatenated shaped symbols. For example, the transmitting device may input two (or more) sets 405 of concatenated shaped symbols into a symbol-to-bit converter 410 to obtain a first bitstream and a second bitstream. The transmitting device may interleave the first bitstream and the second bitstream, for example, based on a first frequency subband and a second frequency subband (e.g., according to a subband-level interleaver), to obtain an interleaved bitstream 420.

[0139] The transmitting device may input the interleaved bit stream 420 to an FEC encoder 425 to provide redundancy. In some cases, the transmitting device may additionally input a subset of unshaped information bits, for example, along with the shaped symbols or converted bits, to the FEC encoder 425. The FEC encoder 425 may generate and output a set of coded bits, which may include parity bits and systematic bits, based on each set 405 of concatenated shaped symbols and, if applicable, the subset of unshaped information bits.

[0140] After FEC encoding, the transmitting device may use multiplexer 430 to multiplex (e.g., perform a multiplexing operation) the parity bits output from the FEC encoder with one or more unshaped information bits in the information bit set. The output of multiplexer 430 may be a multiplexed bit set including shaped bits and unshaped bits. In some cases, the transmitting device may perform post-FEC interleaving within the multiplexed bit set (e.g., may implement post-FEC interleaver 435). Post-FEC interleaving may be performed based on subband-level interleaving or RB-level interleaving, where bits corresponding to different subbands (or RBs) in the multiplexed bit set are interleaved on a subband-by-subband basis. In some examples, the unshaped information bits that are multiplexed with, and in some cases interleaved with, the shaped bits may be referred to as flag bits.

[0141] In some cases, the transmitting device may perform constellation mapping after the post-FEC interleaver 435 based on the shaped bits. The transmitting device may map the shaped bits input to the constellation mapper to corresponding modulation symbols based on the symbol constellation associated with the modulation symbol. For example, the transmitting device may perform constellation mapping such that the amplitude of the modulation symbol is based on the shaped bits and the sign of the modulation symbol is based on the unshaped second subset of bits. In some cases, the transmitting device may multiply the amplitude bit with the sign bit and map the resulting product to the modulation symbol.

[0142] After encoding (and, in some cases, constellation mapping), the transmitting device may map the interleaved, multiplexed bits to a set of time-frequency resources according to resource mapping 440. Resource mapping 440 may include an ordering by which the transmitting device assigns resources in the set of resources. For example, the transmitting device may map the bits of the interleaved, multiplexed bits to a resource grid in a frequency-first, time-second order. If the transmitting device performs constellation mapping, the transmitting device may map modulation symbols to a set of time-frequency resources based on the ordering. The transmitting device may transmit bits (e.g., modulation symbols) corresponding to the set of information bits via the set of resources. The receiving device may perform decoding operations, including inverse operations corresponding to the operations of encoding process 400, to obtain the set of information bits.

[0143] Figure 5An example of a process flow 500 for supporting resource mapping for PAS according to one or more aspects of the present disclosure is illustrated. In some examples, process flow 500 can be implemented by aspects of wireless communication system 100 or wireless communication system 200. For example, process flow 500 can be an example of device 505-a (e.g., a transmitting device) encoding a message for transmission to device 505-b (e.g., a receiving device), as discussed herein. Process flow 500 can include aspects of encoding process 300, encoding process 400, or any combination thereof. In some examples, device 505-b can perform decoding operations including inverse operations corresponding to the operations of process flow 500. Process flow 500 can be an example of a process flow in which each distribution matching process corresponds to a corresponding frequency subband.

[0144] At 520, device 505-a may obtain a set of information bits to be transmitted to device 505-b. In some examples, the set of information bits may be scheduled for transmission via a set of time-frequency resources of a channel. Device 505-a may use two or more distribution matchers to generate sets of shaped symbols corresponding to respective subsets of information bits of the set of information bits, where each distribution matcher is associated with a respective frequency subband or a respective layer. For example, device 505-a may use a first distribution matcher of device 505-a to generate a first set of shaped symbols corresponding to a first subset of the set of information bits. The first distribution matcher may be associated with a first frequency subband, and a block size of the first distribution matcher may be based on the size of the first frequency subband. Device 505-a may use a second distribution matcher of device 505-a to generate a second set of shaped symbols corresponding to a second subset of the set of information bits. The second distribution matcher may be associated with a second frequency subband different from the first frequency subband, and a block size of the second distribution matcher may be based on the size of the second frequency subband.

[0145] In some examples, device 505-a may receive a signal (e.g., control signaling, such as DCI) indicating the size of the first frequency subband and the size of the second frequency subband. In some cases, the size of the first frequency subband and the size of the second frequency subband may be based on the bandwidth. In some examples, the signal may further indicate one or more parameters for the first distribution matcher, one or more parameters for the second distribution matcher, or a combination thereof. Device 505-a may configure the first distribution matcher and the second distribution matcher based on the corresponding block size, frequency subband size, and parameter set.

[0146] At 525, device 505-a may map the first set of shaped symbols to a first time-frequency matrix representation of a resource grid associated with a set of time-frequency resources (e.g., allocated for transmission). The first time-frequency matrix representation may correspond to a first number of frequency-domain resources in the set of time-frequency resources and a first number of time-domain resources in the set of time-frequency resources. In some examples, the first number of frequency-domain resources may be based on a size of the first frequency subband.

[0147] Additionally, at 525, the device 505- may map a second set of shaped symbols to a second time-frequency matrix representation of the resource grid. The second time-frequency matrix representation may correspond to a second number of frequency-domain resources in the set of time-frequency resources and a second number of time-domain resources in the set of time-frequency resources.

[0148] At 530, the device 505-a may partition the first set of shaped symbols into a first set of sub-blocks such that each sub-block in the first set of sub-blocks includes a corresponding subset of the shaped symbols in the first set of shaped symbols. The device 505-a may partition the second set of shaped symbols into a second set of sub-blocks. Each sub-block in the second set of sub-blocks may include a corresponding subset of the shaped symbols in the second set of shaped symbols.

[0149] In some examples, at 530, the device 505-a may partition the first set of shaped symbols and the second set of shaped symbols based on the first time-frequency matrix representation and the second time-frequency matrix representation, respectively (e.g., based on mapping the first set of shaped symbols and the second set of shaped symbols to the first time-frequency matrix representation and the second time-frequency matrix representation at 525). For example, the device 505-a may partition the first set of shaped symbols into a first set of sub-blocks such that the first set of sub-blocks includes a first number of sub-blocks, where the first number of sub-blocks is based on or otherwise associated with a first number of time-domain resources. Additionally, the device 505-a may partition the second set of shaped symbols into a second set of sub-blocks to obtain a second number of sub-blocks based on or otherwise associated with a second number of time-domain resources.

[0150] At 535, device 505-a may concatenate one or more subblocks from the first set of subblocks with one or more subblocks from the second set of subblocks to obtain one or more sets of concatenated shaped symbols. Each set of concatenated shaped symbols may include at least a first subblock from the first set of subblocks and at least a second subblock from the second set of subblocks and may be associated with a first frequency subband and a second frequency subband. In some examples, the number of shaped symbols in each set of concatenated shaped symbols may be equal to the sum of the first number of frequency-domain resources and the second number of frequency-domain resources.

[0151] For example, device 505 - a concatenates a first subblock from the first set of subblocks with a second subblock from the second set of subblocks to obtain a first set of concatenated shaped symbols. Additionally, device 505 - a concatenates a third subblock from the first set of subblocks with a fourth subblock from the second set of subblocks to obtain a second set of concatenated shaped symbols.

[0152] At 540, in some examples, device 505-a may perform a symbol-to-bit conversion operation on each set of concatenated shaped symbols to obtain a corresponding set of bitstreams. For example, device 505-a may perform a first symbol-to-bit conversion operation on a first set of concatenated shaped symbols to obtain a first bitstream. In some cases, device 505-a may additionally perform a second symbol-to-bit conversion operation on a second set of concatenated shaped symbols to obtain a second bitstream.

[0153] At 545, in some examples, the device 505-a may perform one or more interleaving operations. In some cases, the interleaving operations may be performed via a frequency subband interleaver, an RB interleaver, etc. Additionally or alternatively, the device 505-a may perform interleaving within or across a bitstream. For example, the device 505-a may interleave bits of the first bitstream within the first bitstream (e.g., based on the first frequency subband and the second frequency subband) to obtain an interleaved bitstream. In some cases, the device 505-a may interleave the first bitstream and the second bitstream based on the first frequency subband and the second frequency subband to obtain an interleaved bitstream.

[0154] At 550, device 505-a may encode the one or more sets of concatenated shaped symbols. For example, if device 505-a performed symbol-to-bit conversion at 540, device 505-a may input the converted bits (e.g., a bit stream) corresponding to the one or more sets of concatenated shaped symbols into an encoder of device 505-a, such as an FEC encoder. Additionally, if device 505-a performed interleaving at 540, device 505-a may input an interleaved bit stream into the encoder, where the interleaved bit stream corresponds to the one or more sets of concatenated shaped symbols. In some examples, encoding the one or more sets of concatenated shaped symbols may include generating a set of parity bits based on the one or more sets of concatenated shaped symbols.

[0155] In some cases, at 550, the device 505-a may perform one or more multiplexing operations, one or more interleaving operations (e.g., in addition to or in place of the interleaving operation performed at 545), or a combination thereof. For example, the device 505-a may multiplex the set of parity bits with one or more unshaped information bits of the set of information bits to obtain a multiplexed set of bits. The device 505-a may, in some cases, interleave the multiplexed bits in the multiplexed set of bits based on the first frequency sub-band and the second frequency sub-band.

[0156] At 555, the device 505-a may map the set of concatenated shaped symbols, or bits corresponding to the set of concatenated shaped symbols, to a set of time-frequency resources. For example, the device 505-a may map the set of concatenated shaped symbols to a set of resources based on a frequency first, time second ordering.

[0157] At 560, device 505-a may send the shaped message via the set of resources based on the encoding and resource mapping and device 505-b may receive the shaped message via the set of resources based on the encoding and resource mapping.The shaped message may include one or more sets of concatenated shaped symbols.

[0158] At 565 , the device 505 - b may decode the shaped message. For example, the device 505 - b may perform a decoding operation that includes an inverse operation corresponding to the operation of the process flow 500 .

[0159] Figure 6 A block diagram 600 illustrates a device 605 that supports resource mapping for PAS according to one or more aspects of the present disclosure. The device 605 can be an example of aspects of a UE 115 or a network entity 105 as described herein. The device 605 can include a receiver 610, a transmitter 615, and a communication manager 620. The device 605 can also include a processor. Each of these components can communicate with each other (e.g., via one or more buses).

[0160] The receiver 610 may provide means for receiving information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., a control channel, a data channel, an information channel related to resource mapping for PAS). The information may be delivered to other components of the device 605. The receiver 610 may utilize a single antenna or a collection of multiple antennas.

[0161] The transmitter 615 may provide 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., a control channel related to resource mapping for PAS, a data channel, an information channel). In some examples, the transmitter 615 may be co-located with the receiver 610 in a transceiver module. The transmitter 615 may utilize a single antenna or a collection of multiple antennas.

[0162] The communication 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 resource mapping for PAS as described herein. For example, the communication manager 620, the receiver 610, the transmitter 615, or various combinations thereof, or components thereof, may support methods for performing one or more of the functions described herein.

[0163] In some examples, the communication manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may be implemented in hardware (e.g., in a communication management circuit). The hardware may include 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 components for performing the functions described herein. In some examples, a processor and a memory coupled to the processor may be configured to perform one or more of the functions described herein (e.g., by executing instructions stored in the memory by the processor).

[0164] Additionally or alternatively, in some examples, the communication manager 620, receiver 610, transmitter 615, or various combinations or components thereof may be implemented in code executed by a processor (e.g., as communication management software or firmware). If implemented in code executed by a processor, the functionality of the communication manager 620, receiver 610, transmitter 615, or various combinations or components thereof may be performed by a general-purpose processor (e.g., configured as or otherwise supporting means for performing the functions described herein), a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices.

[0165] In some examples, communication manager 620 can be configured to perform various operations (e.g., receive, obtain, monitor, output, transmit) using or otherwise cooperating with receiver 610, transmitter 615, or both. For example, communication manager 620 can receive information from receiver 610, transmit information to transmitter 615, or be integrated with receiver 610, transmitter 615, or both to obtain information, output information, or perform various other operations as described herein.

[0166] According to examples disclosed herein, the communication manager 620 can support wireless communications at a wireless device. For example, the communication manager 620 can be configured to serve as or otherwise support means for generating a first set of shaped symbols corresponding to a first subset of a set of information bits using a first distribution matcher of the wireless device, the first distribution matcher being associated with a first frequency subband. The communication manager 620 can be configured to serve as or otherwise support means for generating a second set of shaped symbols corresponding to a second subset of the set of information bits using a second distribution matcher of the wireless device, the second distribution matcher being associated with a second frequency subband. The communication manager 620 can be configured to serve as or otherwise support means for segmenting the first set of shaped symbols into a first set of sub-blocks, wherein each sub-block in the first set of sub-blocks includes a corresponding subset of the first set of shaped symbols. The communication manager 620 can be configured to serve as or otherwise support means for segmenting the second set of shaped symbols into a second set of sub-blocks, wherein each sub-block in the second set of sub-blocks includes a corresponding subset of the second set of shaped symbols. The communication manager 620 may be configured as or otherwise support means for concatenating a first subblock of the first set of subblocks with a second subblock of the second set of subblocks to obtain a first set of concatenated shaped symbols, wherein the first set of concatenated shaped symbols is associated with the first frequency subband and the second frequency subband. The communication manager 620 may be configured as or otherwise support means for sending a message including at least the first set of concatenated shaped symbols.

[0167] By including or configuring a communication manager 620 according to examples as described herein, the device 605 (e.g., a processor controlling or otherwise coupled with the receiver 610, the transmitter 615, the communication manager 620, or a combination thereof) may support a transmitting device (such as a network entity 105 or a UE 115) to perform distribution matching across time domain resources and frequency domain resources prior to constellation mapping to obtain a bit sequence with a non-uniform probability distribution, which may reduce processing, reduce power consumption, more efficiently utilize communication resources, etc.

[0168] Figure 7A block diagram 700 illustrates a device 705 that supports resource mapping for PAS according to one or more aspects of the present disclosure. The device 705 can be an example of aspects of the device 605, UE 115, or network entity 105 as described herein. The device 705 may include a receiver 710, a transmitter 715, and a communication manager 720. The device 705 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0169] The receiver 710 may provide means for receiving information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., a control channel, a data channel, an information channel related to resource mapping for PAS). The information may be delivered to other components of the device 705. The receiver 710 may utilize a single antenna or a collection of multiple antennas.

[0170] The transmitter 715 may provide 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., a control channel, a data channel, an information channel related to resource mapping for a PAS). In some examples, the transmitter 715 may be co-located with the receiver 710 in a transceiver module. The transmitter 715 may utilize a single antenna or a collection of multiple antennas.

[0171] Device 705 or its various components can be examples of parts for performing various aspects of resource mapping for PAS as described herein. For example, communication manager 720 may include distribution matcher component 725, sub-block component 730, cascade component 735, message transmitter 740 or any combination thereof. Communication manager 720 can be an example of various aspects of communication manager 620 as described herein. In some examples, communication manager 720 or its various components can be configured to use or otherwise collaborate with receiver 710, transmitter 715 or both to perform various operations (e.g., receive, obtain, monitor, output, send). For example, communication manager 720 can receive information from receiver 710, transmit information to transmitter 715, or integrate with receiver 710, transmitter 715 or both in combination to obtain information, output information or perform various other operations as described herein.

[0172] According to examples disclosed herein, a communication manager 720 can support wireless communications at a wireless device. A distribution matcher component 725 can be configured as or otherwise support means for using a first distribution matcher of the wireless device to generate a first set of shaped symbols corresponding to a first subset of a set of information bits, the first distribution matcher being associated with a first frequency subband. The distribution matcher component 725 can be configured as or otherwise support means for using a second distribution matcher of the wireless device to generate a second set of shaped symbols corresponding to a second subset of the set of information bits, the second distribution matcher being associated with a second frequency subband. The subblock component 730 can be configured as or otherwise support means for partitioning the first set of shaped symbols into a first set of subblocks, wherein each subblock in the first set of subblocks includes a respective subset of the first set of shaped symbols. The sub-blocking component 730 can be configured as or otherwise support means for partitioning the second set of shaped symbols into a second set of sub-blocks, wherein each sub-block in the second set of sub-blocks comprises a respective subset of the second set of shaped symbols. The concatenation component 735 can be configured as or otherwise support means for concatenating a first sub-block in the first set of sub-blocks with a second sub-block in the second set of sub-blocks to obtain a first set of concatenated shaped symbols, wherein the first set of concatenated shaped symbols is associated with the first frequency sub-band and the second frequency sub-band. The message transmitter 740 can be configured as or otherwise support means for transmitting a message comprising at least the first set of concatenated shaped symbols.

[0173] Figure 8 A block diagram 800 of a communication manager 820 supporting resource mapping for PAS according to one or more aspects of the present disclosure is illustrated. The communication manager 820 may be an example of aspects of the communication manager 620, the communication manager 720, or both as described herein. The communication manager 820 or its various components may be examples of components for performing various aspects of resource mapping for PAS as described herein. For example, the communication manager 820 may include a distribution matcher component 825, a sub-block component 830, a concatenation component 835, a message transmitter 840, a matrix representation component 845, a symbol-to-bit component 850, an encoding component 855, a resource mapping component 860, an interleaving component 865, a multiplexing component 870, or any combination thereof. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses), which communication may include communication within a protocol layer of a protocol stack, communication associated with a logical channel of the protocol stack (e.g., between protocol layers of a protocol stack, within a device, component, or virtualized component associated with the network entity 105, between devices, components, or virtualized components associated with the network entity 105), or any combination thereof.

[0174] According to examples disclosed herein, a communication manager 820 can support wireless communications at a wireless device. A distribution matcher component 825 can be configured as or otherwise support means for using a first distribution matcher of the wireless device to generate a first set of shaped symbols corresponding to a first subset of a set of information bits, the first distribution matcher being associated with a first frequency subband. In some examples, the distribution matcher component 825 can be configured as or otherwise support means for using a second distribution matcher of the wireless device to generate a second set of shaped symbols corresponding to a second subset of the set of information bits, the second distribution matcher being associated with a second frequency subband. A subblock component 830 can be configured as or otherwise support means for partitioning the first set of shaped symbols into a first set of subblocks, wherein each subblock in the first set of subblocks includes a respective subset of the first set of shaped symbols. In some examples, the sub-block component 830 can be configured as or otherwise support means for partitioning the second set of shaped symbols into a second set of sub-blocks, wherein each sub-block in the second set of sub-blocks comprises a respective subset of the second set of shaped symbols. The concatenation component 835 can be configured as or otherwise support means for concatenating a first sub-block in the first set of sub-blocks with a second sub-block in the second set of sub-blocks to obtain a first set of concatenated shaped symbols, wherein the first set of concatenated shaped symbols is associated with the first frequency sub-band and the second frequency sub-band. The message transmitter 840 can be configured as or otherwise support means for transmitting a message comprising at least the first set of concatenated shaped symbols.

[0175] In some examples, the matrix representation component 845 can be configured as or otherwise support means for mapping the first set of shaped symbols to a first time-frequency matrix representation of the resource grid, wherein partitioning the first set of shaped symbols is based on the first time-frequency matrix representation. In some examples, the matrix representation component 845 can be configured as or otherwise support means for mapping the second set of shaped symbols to a second time-frequency matrix representation of the resource grid, wherein partitioning the second set of shaped symbols is based on the second time-frequency matrix representation.

[0176] In some examples, the first time-frequency matrix representation corresponds to a first number of frequency-domain resources and a first number of time-domain resources. In some examples, the second time-frequency matrix representation corresponds to a second number of frequency-domain resources and a second number of time-domain resources. In some examples, the number of subblocks in the first set of subblocks is associated with the first number of time-domain resources. In some examples, the number of subblocks in the second set of subblocks is associated with the second number of time-domain resources. In some examples, the number of symbols in the first set of concatenated shaped symbols is equal to the sum of the first number of frequency-domain resources and the second number of frequency-domain resources.

[0177] In some examples, the concatenation component 835 can be configured as or otherwise support means for concatenating the third sub-block in the first set of sub-blocks with the fourth sub-block in the second set of sub-blocks to obtain a second set of concatenated shaped symbols, wherein the message also includes the second set of concatenated shaped symbols.

[0178] In some examples, the symbol-to-bits component 850 can be configured as or otherwise support means for performing a first symbol-to-bit conversion operation on the first set of concatenated shaped symbols to obtain a first bitstream. In some examples, the symbol-to-bits component 850 can be configured as or otherwise support means for performing a second symbol-to-bit conversion operation on the second set of concatenated shaped symbols to obtain a second bitstream.

[0179] In some examples, the interleaving component 865 can be configured as or otherwise support means for interleaving the first bitstream and the second bitstream based on the first frequency subband and the second frequency subband to obtain an interleaved bitstream. In some examples, the encoding component 855 can be configured as or otherwise support means for encoding the interleaved bitstream using an encoder of the wireless device, wherein sending the message is based on the encoding.

[0180] In some examples, the encoding component 855 may be configured as or otherwise support means for generating a set of parity bits based on the first set of concatenated shaped symbols and the second set of concatenated shaped symbols, and the multiplexing component 870 may be configured as or otherwise support means for multiplexing the set of parity bits with one or more unshaped information bits in the set of information bits, wherein sending the message is based on the multiplexing.

[0181] In some examples, the symbol-to-bits component 850 can be configured as or otherwise support means for performing a symbol-to-bits conversion operation on the first set of concatenated shaped symbols to obtain a first bitstream. In some examples, the encoding component 855 can be configured as or otherwise support means for encoding the first bitstream using an encoder of the wireless device, wherein transmitting the message is based on the encoding. In some examples, to support encoding the first bitstream, the encoding component 855 can be configured as or otherwise support means for generating a set of parity bits based on the first set of concatenated shaped symbols using the encoder of the wireless device.

[0182] In some examples, multiplexing component 870 can be configured as or otherwise support means for multiplexing the set of parity bits with one or more unshaped information bits in the set of information bits to obtain a multiplexed set of bits. In some examples, interleaving component 865 can be configured as or otherwise support means for interleaving the multiplexed bits in the multiplexed set of bits based on the first frequency sub-band and the second frequency sub-band, wherein sending the message is based on the interleaving.

[0183] In some examples, to support sending the message, resource mapping component 860 may be configured as or otherwise support means for mapping the first set of concatenated shaped symbols to a set of resources via which the message is sent based on a frequency first, time second ordering.

[0184] In some examples, the block size of the first distribution matcher is based on the size of the first frequency sub-band. In some examples, the block size of the second distribution matcher is based on the size of the second frequency sub-band. In some examples, the distribution matcher component 825 can be configured as or otherwise support a component for receiving control signaling indicating the size of the first frequency sub-band and the size of the second frequency sub-band. In some examples, the size of the first frequency sub-band and the size of the second frequency sub-band are based on bandwidth.

[0185] In some examples, the distribution matcher component 825 can be configured as or otherwise support a component for receiving a signal indicating one or more parameters for the first distribution matcher, one or more parameters for the second distribution matcher, or a combination thereof.

[0186] Figure 9A diagram of a system 900 including a device 905 that supports resource mapping for PAS according to one or more aspects of the present disclosure is illustrated. The device 905 can be an example of a device 605, a device 705, or a UE 115 as described herein, or include components thereof. The device 905 can communicate (e.g., wirelessly) with one or more network entities 105, one or more UEs 115, or any combination thereof. The device 905 can include components for two-way voice and data communication, including components for sending and receiving communications, such as a communication manager 920, an input / output (I / O) controller 910, a transceiver 915, an antenna 925, a memory 930, code 935, and a processor 940. These components can be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., bus 945).

[0187] I / O controller 910 can manage input and output signals for device 905. I / O controller 910 can also manage peripheral devices that are not integrated into device 905. In some cases, I / O controller 910 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 910 can utilize an operating system, such as or another known operating system. Additionally or alternatively, I / O controller 910 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, I / O controller 910 may be implemented as part of a processor (such as processor 940). In some cases, a user may interact with device 905 via I / O controller 910 or via hardware components controlled by I / O controller 910.

[0188] 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 bidirectionally via 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 bidirectionally with another wireless transceiver. The transceiver 915 may also include a modem for modulating packets; providing the modulated packets to one or more antennas 925 for transmission; and demodulating packets received from the one or more antennas 925. The transceiver 915, or the transceiver 915 and one or more antennas 925, may be examples of the transmitter 615, the transmitter 715, the receiver 610, the receiver 710, or any combination thereof, or components thereof, as described herein.

[0189] The memory 930 may include random access memory (RAM) and read-only memory (ROM). The memory 930 may store computer-readable, computer-executable code 935 including instructions that, when executed by the processor 940, cause the device 905 to perform the 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 processor 940, but may (for example, when compiled and executed) cause the computer to perform the functions described herein. In some cases, the memory 930 may contain, among other things, a basic I / O system (BIOS) that may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0190] The 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 thereof). In some cases, the processor 940 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into the processor 940. The processor 940 may be configured to execute computer-readable instructions stored in a memory (e.g., a memory 930) to cause the device 905 to perform various functions (e.g., functions or tasks supporting resource mapping for a PAS). For example, the device 905 or a component of the device 905 may include a processor 940 and a memory 930 coupled to or coupled to the processor 940, the processor 940 and the memory 930 being configured to perform the various functions described herein.

[0191] According to examples disclosed herein, the communication manager 920 can support wireless communications at a wireless device. For example, the communication manager 920 can be configured to serve as or otherwise support means for generating a first set of shaped symbols corresponding to a first subset of a set of information bits using a first distribution matcher of the wireless device, the first distribution matcher being associated with a first frequency subband. The communication manager 920 can be configured to serve as or otherwise support means for generating a second set of shaped symbols corresponding to a second subset of the set of information bits using a second distribution matcher of the wireless device, the second distribution matcher being associated with a second frequency subband. The communication manager 920 can be configured to serve as or otherwise support means for segmenting the first set of shaped symbols into a first set of subblocks, wherein each subblock in the first set of subblocks includes a corresponding subset of the first set of shaped symbols. The communication manager 920 can be configured to serve as or otherwise support means for segmenting the second set of shaped symbols into a second set of subblocks, wherein each subblock in the second set of subblocks includes a corresponding subset of the second set of shaped symbols. The communication manager 920 may be configured as or otherwise support means for concatenating a first subblock of the first set of subblocks with a second subblock of the second set of subblocks to obtain a first set of concatenated shaped symbols, wherein the first set of concatenated shaped symbols is associated with the first frequency subband and the second frequency subband. The communication manager 920 may be configured as or otherwise support means for sending a message including at least the first set of concatenated shaped symbols.

[0192] By including or configuring a communication manager 920 according to the examples described herein, the device 905 can support a transmitting device (such as a network entity 105 or a UE 115) to perform distribution matching across time domain resources and frequency domain resources before constellation mapping to obtain a bit sequence with a non-uniform probability distribution, which can reduce processing, reduce power consumption, more efficiently utilize communication resources, improve coordination between devices, etc.

[0193] In some examples, the communication manager 920 can be configured to use or otherwise cooperate with the transceiver 915, one or more antennas 925, or any combination thereof to perform various operations (e.g., receive, monitor, transmit). Although the communication manager 920 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 920 can be supported or performed by the processor 940, the memory 930, the code 935, or any combination thereof. For example, the code 935 can include instructions that can be executed by the processor 940 to cause the device 905 to perform various aspects of resource mapping for PAS as described herein, or the processor 940 and the memory 930 can be otherwise configured to perform or support such operations.

[0194] Figure 10 A diagram of a system 1000 including a device 1005 supporting resource mapping for PAS according to one or more aspects of the present disclosure is illustrated. The device 1005 can be an example of a device 605, a device 705, or a network entity 105 as described herein, or include components thereof. The device 1005 can communicate with one or more network entities 105, one or more UEs 115, or any combination thereof, and the communication may include communication via one or more wired interfaces, via one or more wireless interfaces, or any combination thereof. The device 1005 may include components that support output and acquisition of communications, such as a communication manager 1020, a transceiver 1010, an antenna 1015, a memory 1025, code 1030, and a processor 1035. These components can be electronically communicated or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., bus 1040).

[0195] The transceiver 1010 may support bidirectional communication via a wired link, a wireless link, or both as described herein. In some examples, the transceiver 1010 may include a wired transceiver and may communicate bidirectionally with another wired transceiver. Additionally or alternatively, in some examples, the transceiver 1010 may include a wireless transceiver and may communicate bidirectionally with another wireless transceiver. In some examples, the device 1005 may include one or more antennas 1015, which may be capable of (e.g., concurrently) transmitting or receiving wireless transmissions. The transceiver 1010 may also include a modem for: modulating a signal; providing the modulated signal for transmission (e.g., via one or more antennas 1015, via a wired transmitter); receiving the modulated signal (e.g., from one or more antennas 1015, from a wired receiver); and demodulating the signal. In some implementations, the transceiver 1010 may include one or more interfaces, such as one or more interfaces coupled to one or more antennas 1015 configured to support various receive or obtain operations, or one or more interfaces coupled to one or more antennas 1015 configured to support various transmit or output operations, or a combination thereof. In some implementations, the transceiver 1010 may include or be configured to be coupled to one or more processors or memory components operable to perform or support operations based on received or obtained information or signals, or to generate information or other signals for transmission or other output, or any combination thereof. In some implementations, the transceiver 1010, or the transceiver 1010 and one or more antennas 1015, or the transceiver 1010 and one or more antennas 1015 and one or more processors or memory components (e.g., processor 1035 or memory 1025 or both) may be included in a chip or chip assembly installed in the device 1005. In some examples, the transceiver may be operable to support communications via one or more communication links (eg, communication link 125 , backhaul communication link 120 , midhaul communication link 162 , fronthaul communication link 168 ).

[0196] Memory 1025 may include RAM and ROM. Memory 1025 may store computer-readable, computer-executable code 1030 including instructions that, when executed by processor 1035, cause device 1005 to perform the various functions described herein. Code 1030 may be stored in a non-transitory computer-readable medium (such as system memory or another type of memory). In some cases, code 1030 may not be directly executable by processor 1035, but may (e.g., when compiled and executed) cause a computer to perform the functions described herein. In some cases, memory 1025 may also include BIOS, etc., which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0197] The processor 1035 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, an ASIC, a CPU, an FPGA, a microcontroller, a programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof). In some cases, the processor 1035 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into the processor 1035. The processor 1035 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1025) to cause the device 1005 to perform various functions (e.g., functions or tasks supporting resource mapping for PAS). For example, the device 1005 or a component of the device 1005 may include the processor 1035 and the memory 1025 coupled to the processor 1035, the processor 1035 and the memory 1025 being configured to perform the various functions described herein. The processor 1035 may be an example of a cloud computing platform (e.g., one or more physical nodes and supporting software (such as an operating system, a virtual machine, or a container instance)) that may host functions for performing the functions of the device 1005 (e.g., by executing code 1030). The processor 1035 can be any one or more suitable processors capable of executing scripts or instructions of one or more software programs stored in the device 1005 (such as within the memory 1025). In some specific implementations, the processor 1035 can be a component of a processing system. A processing system can generally refer to a system or a series of machines or components that receives inputs and processes these inputs to produce a set of outputs (which can be delivered to, for example, other systems or components of the device 1005). For example, the processing system of the device 1005 can refer to a system that includes various other components or subcomponents of the device 1005 (such as the processor 1035, or the transceiver 1010, or the communication manager 1020, or other components or combinations of components of the device 1005). The processing system of the device 1005 can interface with other components of the device 1005 and can process information (such as inputs or signals) received from other components or output information to other components. For example, a chip or modem of the device 1005 can include a processing system and one or more interfaces for outputting information, for receiving information, or both. The one or more interfaces may be implemented as or otherwise include a first interface configured to output information and a second interface configured to obtain information, or the same interface configured to output information and obtain information, etc. In some implementations, the one or more interfaces may refer to an interface between a processing system of a chip or modem and a transmitter, so that the device 1005 can transmit information output from the chip or modem. Additionally or alternatively, in some implementations, the one or more interfaces may refer to an interface between a processing system of a chip or modem and a receiver, so that the device 1005 can obtain information or signal input, and the information can be delivered to the processing system.One of ordinary skill in the art will readily recognize that the first interface may also obtain information or signal input, and the second interface may also output information or signal output.

[0198] In some examples, bus 1040 may support communications for protocol layers (e.g., within protocol layers) of a protocol stack. In some examples, bus 1040 may support communications associated with logical channels of a protocol stack (e.g., between protocol layers of a protocol stack), which may include communications performed within components of device 1005, or communications performed between different components of device 1005 that may be co-located or located in different locations (e.g., where device 1005 may refer to a system in which one or more of communication manager 1020, transceiver 1010, memory 1025, code 1030, and processor 1035 may be located in one of the different components or divided between the different components).

[0199] In some examples, communications manager 1020 can manage aspects of communications with core network 130 (e.g., via one or more wired or wireless backhaul links). For example, communications manager 1020 can manage the delivery of data communications for client devices, such as one or more UEs 115. In some examples, communications manager 1020 can manage communications with other network entities 105 and can include a controller or scheduler for controlling communications with UEs 115 in coordination with other network entities 105. In some examples, communications manager 1020 can support an X2 interface within LTE / LTE-A wireless communication network technology to provide communications between network entities 105.

[0200] According to examples disclosed herein, the communication manager 1020 can support wireless communications at a wireless device. For example, the communication manager 1020 can be configured to serve as or otherwise support means for generating a first set of shaped symbols corresponding to a first subset of a set of information bits using a first distribution matcher of the wireless device, the first distribution matcher being associated with a first frequency subband. The communication manager 1020 can be configured to serve as or otherwise support means for generating a second set of shaped symbols corresponding to a second subset of the set of information bits using a second distribution matcher of the wireless device, the second distribution matcher being associated with a second frequency subband. The communication manager 1020 can be configured to serve as or otherwise support means for segmenting the first set of shaped symbols into a first set of subblocks, wherein each subblock in the first set of subblocks includes a respective subset of the first set of shaped symbols. The communication manager 1020 may be configured as or otherwise support means for segmenting the second set of shaped symbols into a second set of subblocks, wherein each subblock in the second set of subblocks comprises a respective subset of the second set of shaped symbols. The communication manager 1020 may be configured as or otherwise support means for concatenating a first subblock in the first set of subblocks with a second subblock in the second set of subblocks to obtain a first set of concatenated shaped symbols, wherein the first set of concatenated shaped symbols is associated with the first frequency subband and the second frequency subband. The communication manager 1020 may be configured as or otherwise support means for sending a message comprising at least the first set of concatenated shaped symbols.

[0201] By including or configuring a communication manager 1020 according to the examples described herein, the device 1005 can support a transmitting device (such as a network entity 105 or a UE 115) to perform distribution matching across time domain resources and frequency domain resources before constellation mapping to obtain a bit sequence with a non-uniform probability distribution, which can reduce processing, reduce power consumption, more efficiently utilize communication resources, improve coordination between devices, etc.

[0202] In some examples, the communication manager 1020 can be configured to perform various operations (e.g., receive, obtain, monitor, output, transmit) using or otherwise cooperating with the transceiver 1010, one or more antennas 1015 (e.g., where applicable), or any combination thereof. Although the communication manager 1020 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 1020 can be supported or performed by the transceiver 1010, the processor 1035, the memory 1025, the code 1030, or any combination thereof. For example, the code 1030 can include instructions that are executable by the processor 1035 to cause the device 1005 to perform various aspects of resource mapping for PAS as described herein, or the processor 1035 and the memory 1025 can be otherwise configured to perform or support such operations.

[0203] Figure 11 A flowchart illustrating a method 1100 for supporting resource mapping for PAS according to one or more aspects of the present disclosure is illustrated. The operations of the method 1100 may be implemented by a UE or a network entity or components thereof as described herein. For example, the operations of the method 1100 may be implemented by a UE or a network entity or components thereof as described herein. Figures 1 to 10 The described functions may be performed by the UE 115 or network entity. In some examples, the UE or network entity may execute an instruction set to control the functional elements of the UE or network entity to perform the described functions. Additionally or alternatively, the UE or network entity may use dedicated hardware to perform various aspects of the described functions.

[0204] At 1105, the method may include: generating a first set of shaped symbols corresponding to a first subset of a set of information bits using a first distribution matcher of the wireless device, the first distribution matcher being associated with a first frequency subband. The operations of 1105 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1105 may be performed as described in reference to Figure 8 The described distribution matcher component 825 is performed.

[0205] At 1110, the method may include: generating a second set of shaped symbols corresponding to a second subset of the set of information bits using a second distribution matcher of the wireless device, the second distribution matcher being associated with a second frequency subband. The operations of 1110 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1110 may be performed as described in reference to Figure 8 The described distribution matcher component 825 is performed.

[0206] At 1115, the method may include: partitioning the first set of shaped symbols into a first set of sub-blocks, wherein each sub-block in the first set of sub-blocks includes a respective subset of the first set of shaped symbols. The operations of 1115 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1115 may be performed as described in reference to Figure 8 The described sub-block component 830 is executed.

[0207] At 1120, the method may include: partitioning the second set of shaped symbols into a second set of sub-blocks, wherein each sub-block in the second set of sub-blocks includes a respective subset of the second set of shaped symbols. The operations of 1120 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1120 may be performed as described in reference to Figure 8 The described sub-block component 830 is executed.

[0208] At 1125, the method may include concatenating a first subblock of the first set of subblocks with a second subblock of the second set of subblocks to obtain a first set of concatenated shaped symbols, wherein the first set of concatenated shaped symbols is associated with the first frequency subband and the second frequency subband. The operations of 1125 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1125 may be performed as described with reference to Figure 8 The described cascade component 835 is performed.

[0209] At 1130, the method may include sending a message including at least the first set of concatenated shaped symbols. The operations of 1130 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1130 may be performed as described in reference to Figure 8 The described message sender 840 is executed.

[0210] Figure 12 A flowchart illustrating a method 1200 for supporting resource mapping for PAS according to one or more aspects of the present disclosure is illustrated. The operations of the method 1200 may be implemented by a UE or a network entity or components thereof as described herein. For example, the operations of the method 1200 may be implemented by a UE or a network entity or components thereof as described herein. Figures 1 to 10 The described functions may be performed by the UE 115 or network entity. In some examples, the UE or network entity may execute an instruction set to control the functional elements of the UE or network entity to perform the described functions. Additionally or alternatively, the UE or network entity may use dedicated hardware to perform various aspects of the described functions.

[0211] At 1205, the method may include receiving a signal indicating one or more parameters of a first distribution matcher for the wireless device, one or more parameters of a second distribution matcher for the wireless device, or a combination thereof. The operations of 1205 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1205 may be performed as described in reference to Figure 8 The described distribution matcher component 825 is performed.

[0212] At 1210, the method may include generating a first set of shaped symbols corresponding to a first subset of a set of information bits using the first distribution matcher, the first distribution matcher being associated with a first frequency subband. The operations of 1210 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1210 may be performed as described in reference to Figure 8 The described distribution matcher component 825 is performed.

[0213] At 1215, the method may include generating a second set of shaped symbols corresponding to a second subset of the set of information bits using the second distribution matcher, the second distribution matcher being associated with a second frequency subband. The operations of 1215 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1215 may be performed as described in reference to Figure 8 The described distribution matcher component 825 is performed.

[0214] At 1220, the method may include: partitioning the first set of shaped symbols into a first set of sub-blocks, wherein each sub-block in the first set of sub-blocks includes a respective subset of the first set of shaped symbols. The operations of 1220 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1220 may be performed as described in reference to Figure 8 The described sub-block component 830 is executed.

[0215] At 1225, the method may include: partitioning the second set of shaped symbols into a second set of sub-blocks, wherein each sub-block in the second set of sub-blocks includes a respective subset of the second set of shaped symbols. The operations of 1225 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1225 may be performed as described in reference to Figure 8 The described sub-block component 830 is executed.

[0216] At 1230, the method may include concatenating a first subblock of the first set of subblocks with a second subblock of the second set of subblocks to obtain a first set of concatenated shaped symbols, wherein the first set of concatenated shaped symbols is associated with the first frequency subband and the second frequency subband. The operations of 1230 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1230 may be performed as described in reference to Figure 8 The described cascade component 835 is performed.

[0217] At 1235, the method may include mapping the first set of concatenated shaped symbols to a set of resources based on a frequency first, time second ordering. The operations of 1235 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1235 may be performed as described in reference to Figure 8 The resource mapping component 860 described is performed.

[0218] At 1240, the method may include sending a message including at least the first set of concatenated shaped symbols, wherein the message is sent via the set of resources. The operations of 1240 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1240 may be performed as described in reference to Figure 8 The described message sender 840 is executed.

[0219] Figure 13 A flowchart illustrating a method 1300 for supporting resource mapping for PAS according to one or more aspects of the present disclosure is illustrated. The operations of the method 1300 may be implemented by a UE or a network entity or components thereof as described herein. For example, the operations of the method 1300 may be implemented by a UE or a network entity or components thereof as described herein. Figures 1 to 10 The described functions may be performed by the UE 115 or network entity. In some examples, the UE or network entity may execute an instruction set to control the functional elements of the UE or network entity to perform the described functions. Additionally or alternatively, the UE or network entity may use dedicated hardware to perform various aspects of the described functions.

[0220] At 1305, the method may include: generating a first set of shaped symbols corresponding to a first subset of a set of information bits using a first distribution matcher of the wireless device, the first distribution matcher being associated with a first frequency subband. The operations of 1305 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1305 may be performed as described in reference to Figure 8 The described distribution matcher component 825 is performed.

[0221] At 1310, the method may include: generating a second set of shaped symbols corresponding to a second subset of the set of information bits using a second distribution matcher of the wireless device, the second distribution matcher being associated with a second frequency subband. The operations of 1310 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1310 may be performed as described in reference to Figure 8 The described distribution matcher component 825 is performed.

[0222] At 1315, the method may include: partitioning the first set of shaped symbols into a first set of sub-blocks, wherein each sub-block in the first set of sub-blocks includes a respective subset of the first set of shaped symbols. The operations of 1315 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1315 may be performed as described with reference to Figure 8 The described sub-block component 830 is executed.

[0223] At 1320, the method may include: partitioning the second set of shaped symbols into a second set of sub-blocks, wherein each sub-block in the second set of sub-blocks includes a respective subset of the second set of shaped symbols. The operations of 1320 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1320 may be performed as described in reference to Figure 8 The described sub-block component 830 is executed.

[0224] At 1325, the method may include concatenating a first subblock of the first set of subblocks with a second subblock of the second set of subblocks to obtain a first set of concatenated shaped symbols, wherein the first set of concatenated shaped symbols is associated with the first frequency subband and the second frequency subband. The operations of 1325 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1325 may be performed as described with reference to Figure 8 The described cascade component 835 is performed.

[0225] At 1330, the method may include performing a symbol-to-bit conversion operation on the first set of concatenated shaped symbols to obtain a first bitstream. The operations of 1330 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1330 may be performed as described in reference to Figure 8 The symbols described are implemented by component 850.

[0226] At 1335, the method may include encoding the first bit stream using an encoder of the wireless device. The operations of 1335 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1335 may be performed as described in reference to Figure 8 The described encoding component 855 is performed.

[0227] At 1340, the method may include sending a message including at least the first set of concatenated shaped symbols, wherein sending the message is based on the encoding. The operations of 1340 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1340 may be performed as described in reference to Figure 8 The described message sender 840 is executed.

[0228] The following provides an overview of various aspects of the disclosure:

[0229] Aspect 1: A method for wireless communication at a wireless device, the method comprising: generating, using a first distribution matcher of the wireless device, a first set of shaped symbols corresponding to a first subset of a set of information bits, the first distribution matcher being associated with a first frequency subband; generating, using a second distribution matcher of the wireless device, a second set of shaped symbols corresponding to a second subset of the set of information bits, the second distribution matcher being associated with a second frequency subband; partitioning the first set of shaped symbols into a first set of subblocks, wherein each subblock in the first set of subblocks includes a corresponding subset of the first set of shaped symbols; partitioning the second set of shaped symbols into a second set of subblocks, wherein each subblock in the second set of subblocks includes a corresponding subset of the second set of shaped symbols; concatenating a first subblock in the first set of subblocks with a second subblock in the second set of subblocks to obtain a first set of concatenated shaped symbols, wherein the first set of concatenated shaped symbols is associated with the first frequency subband and the second frequency subband; and sending a message including at least the first set of concatenated shaped symbols.

[0230] Aspect 2: According to the method of Aspect 1, the method also includes: mapping the first set of shaped symbols to a first time-frequency matrix representation of a resource grid, wherein the first set of shaped symbols is divided at least in part based on the first time-frequency matrix representation; and mapping the second set of shaped symbols to a second time-frequency matrix representation of the resource grid, wherein the second set of shaped symbols is divided at least in part based on the second time-frequency matrix representation.

[0231] Aspect 3: A method according to Aspect 2, wherein the first time-frequency matrix representation corresponds to a first number of frequency domain resources and a first number of time domain resources, and the second time-frequency matrix representation corresponds to a second number of frequency domain resources and a second number of time domain resources.

[0232] Aspect 4: The method according to aspect 3, wherein the number of subblocks in the first set of subblocks is associated with the first number of time domain resources, and the number of subblocks in the second set of subblocks is associated with the second number of time domain resources.

[0233] Aspect 5: The method according to any one of aspects 3 to 4, wherein the number of symbols in the first set of concatenated shaped symbols is equal to the sum of the first number of frequency domain resources and the second number of frequency domain resources.

[0234] Aspect 6: The method according to any one of Aspects 1 to 5, further comprising: concatenating a third sub-block in the first set of sub-blocks with a fourth sub-block in the second set of sub-blocks to obtain a second set of concatenated shaped symbols, wherein the message further comprises the second set of concatenated shaped symbols.

[0235] Aspect 7: The method according to Aspect 6 further includes: performing a first symbol-to-bit conversion operation on the first set of concatenated shaped symbols to obtain a first bit stream; and performing a second symbol-to-bit conversion operation on the second set of concatenated shaped symbols to obtain a second bit stream.

[0236] Aspect 8: The method according to Aspect 7 further includes: interleaving the first bit stream and the second bit stream at least in part based on the first frequency subband and the second frequency subband to obtain an interleaved bit stream; and encoding the interleaved bit stream using an encoder of the wireless device, wherein sending the message is at least in part based on the encoding.

[0237] Aspect 9: A method according to Aspect 8, wherein encoding the interleaved bit stream includes: generating a set of parity bits based at least in part on the first set of concatenated shaped symbols and the second set of concatenated shaped symbols, and the method further includes: multiplexing the set of parity bits with one or more unshaped information bits in the set of information bits, wherein sending the message is at least in part based on the multiplexing.

[0238] Aspect 10: The method of any one of Aspects 1 to 5, further comprising: performing a symbol-to-bit conversion operation on the first set of concatenated shaped symbols to obtain a first bit stream; and encoding the first bit stream using an encoder of the wireless device, wherein sending the message is based at least in part on the encoding.

[0239] Aspect 11: The method of aspect 10, wherein encoding the first bit stream comprises generating, using the encoder of the wireless device, a set of parity bits based at least in part on the first set of concatenated shaped symbols.

[0240] Aspect 12: The method according to Aspect 11 further includes: multiplexing the parity bit set with one or more unshaped information bits in the information bit set to obtain a multiplexed bit set; and interleaving the multiplexed bits in the multiplexed bit set based at least in part on the first frequency sub-band and the second frequency sub-band, wherein sending the message is at least in part based on the interleaving.

[0241] Aspect 13: The method of any one of Aspects 1 to 12, wherein sending the message further comprises mapping the first set of concatenated shaped symbols to a set of resources based at least in part on a frequency first, time second ordering, wherein the message is sent via the set of resources.

[0242] Aspect 14: A method according to any one of Aspects 1 to 13, wherein the block size of the first distribution matcher is based at least in part on the size of the first frequency sub-band, and the block size of the second distribution matcher is based at least in part on the size of the second frequency sub-band.

[0243] Aspect 15: The method according to aspect 14, further comprising: receiving control signaling indicating the size of the first frequency sub-band and the size of the second frequency sub-band.

[0244] Aspect 16: The method according to any one of aspects 14 to 15, wherein the size of the first frequency sub-band and the size of the second frequency sub-band are based at least in part on bandwidth.

[0245] Aspect 17: The method according to any one of aspects 1 to 16, further comprising: receiving a signal indicating one or more parameters for the first distribution matcher, one or more parameters for the second distribution matcher, or a combination thereof.

[0246] Aspect 18: An apparatus for wireless communication at a wireless device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method according to any one of Aspects 1 to 17.

[0247] Aspect 19: An apparatus for wireless communication at a wireless device, the apparatus comprising: at least one component for performing the method according to any one of aspects 1 to 17.

[0248] Aspect 20: A non-transitory computer-readable medium storing code for wireless communication at a wireless device, the code comprising instructions executable by a processor to perform the method according to any one of aspects 1 to 17.

[0249] It should be noted that the methods described herein describe possible implementations, and that the operations and steps may be rearranged or otherwise modified and that other implementations are possible. Furthermore, aspects from two or more methods may be combined.

[0250] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for example purposes, and the terminology of LTE, LTE-A, LTE-A Pro, or NR may be used throughout much of the description, the techniques described herein may also be applicable to networks other than LTE, LTE-A, LTE-A Pro, or NR networks. For example, the techniques described may be applicable to various other wireless communication systems, such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0251] The information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips referred to throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0252] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or executed 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, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).

[0253] The functions described herein may be implemented using hardware, software executed by a processor, firmware, or any combination thereof. When implemented using software executed by a processor, the functions may be stored as one or more instructions or codes of a computer-readable medium, or sent using one or more instructions or codes of a computer-readable medium. Other examples and specific implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hard wiring, or a combination of any of these. Features that implement the functions may also be physically located at different locations, including being distributed so that the various parts of the functions are implemented at different physical locations.

[0254] Computer readable medium includes both non-transient computer storage medium and communication medium, and this communication medium includes any medium that promotes computer program to be transferred from one position to another position.Non-transient storage medium can be any available medium that can be accessed by general-purpose computer or special-purpose computer.By way of example and not limitation, non-transient computer readable medium can include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM or other optical disc storage device, magnetic disk storage device or other magnetic storage device or can be used for carrying or storing desired program code components and any other non-transient medium that can be accessed by general-purpose or special-purpose computer or general or special-purpose processor in the form of instruction or data structure.In addition, any connection is appropriately referred to as computer readable medium.For example, if software is to be sent from website, server or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technology such as infrared, radio and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL or wireless technology such as infrared, radio and microwave are included in the definition of computer readable medium. As used herein, disk and optical disc include CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc. Disks can reproduce data magnetically, while optical discs can use lasers to reproduce data optically. Combinations of the above are also included within the scope of computer-readable media.

[0255] As used herein (including in the claims), "or" used in a list of items (e.g., a list of items followed by a phrase such as "at least one of" or "one or more of") indicates an inclusive list, so 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). In addition, as used herein, the phrase "based on" should not be interpreted as a reference to a closed set of conditions. For example, an example step described as "based on condition A" can be based on both condition A and condition B without departing from the scope of this disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "based at least in part on."

[0256] The term "determining" encompasses a variety of actions, and thus, "determining" may include calculating, computing, processing, deriving, investigating, looking up (such as via looking up in a table, database, or other data structure), ascertaining, etc. Additionally, "determining" may include receiving (e.g., receiving information), accessing (e.g., accessing data stored in a memory), etc. Additionally, "determining" may include parsing, retrieving, selecting, choosing, establishing, and other such similar actions.

[0257] In the accompanying drawings, similar components or features may have the same reference label. In addition, various components of the same type may be distinguished by following the reference label with a dash and a second label to distinguish between similar components. If only the first reference label is used in the specification, the description applies to any of the similar components having the same first reference label, regardless of the second reference label or other subsequent reference labels.

[0258] The description set forth herein in conjunction with the accompanying drawings describes example configurations and does not represent all examples that may be implemented or within the scope of the claims. The term "example" as used herein means "serving as an example, instance, or illustration," rather than "preferred" or "having advantages over other examples." The detailed description includes specific details to provide an understanding of the described techniques. However, these techniques may be practiced without these specific details. In some cases, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0259] The description herein is provided to enable one of ordinary skill in the art to make or use the present disclosure. Various modifications to the present disclosure will be apparent to those of ordinary skill in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Thus, the present disclosure is not limited to the examples and designs described herein, but should be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An apparatus for wireless communication at a wireless device, the apparatus comprising: processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to: generating a first set of shaped symbols corresponding to a first subset of a set of information bits using a first distribution matcher of the wireless device, the first distribution matcher being associated with a first frequency subband; generating a second set of shaped symbols corresponding to a second subset of the set of information bits using a second distribution matcher of the wireless device, the second distribution matcher being associated with a second frequency subband; partitioning the first set of shaped symbols into a first set of sub-blocks, wherein each sub-block in the first set of sub-blocks comprises a respective subset of the first set of shaped symbols; partitioning the second set of shaped symbols into a second set of sub-blocks, wherein each sub-block in the second set of sub-blocks comprises a respective subset of the second set of shaped symbols; concatenating a first subblock of the first set of subblocks with a second subblock of the second set of subblocks to obtain a first set of concatenated shaped symbols, wherein the first set of concatenated shaped symbols is associated with the first frequency subband and the second frequency subband; as well as A message is sent comprising at least the first set of concatenated shaped symbols.

2. The apparatus of claim 1 , wherein the instructions are further executable by the processor to cause the apparatus to: mapping the first set of shaped symbols to a first time-frequency matrix representation of a resource grid, wherein partitioning the first set of shaped symbols is based at least in part on the first time-frequency matrix representation; and The second set of shaped symbols is mapped to a second time-frequency matrix representation of the resource grid, wherein partitioning the second set of shaped symbols is based at least in part on the second time-frequency matrix representation.

3. The device according to claim 2, wherein: The first time-frequency matrix representation corresponds to a first number of frequency-domain resources and a first number of time-domain resources; and The second time-frequency matrix representation corresponds to a second number of frequency-domain resources and a second number of time-domain resources.

4. The device according to claim 3, wherein: The number of sub-blocks in the first set of sub-blocks is associated with the first number of time-domain resources; and The number of sub-blocks in the second set of sub-blocks is associated with the second number of time-domain resources. 5 . The apparatus of claim 3 , wherein a number of symbols in the first set of concatenated shaped symbols is equal to a sum of the first number of frequency-domain resources and the second number of frequency-domain resources.

6. The apparatus of claim 1 , wherein the instructions are further executable by the processor to cause the apparatus to: A third subblock of the first set of subblocks is concatenated with a fourth subblock of the second set of subblocks to obtain a second set of concatenated shaped symbols, wherein the message also includes the second set of concatenated shaped symbols.

7. The apparatus of claim 6, wherein the instructions are further executable by the processor to cause the apparatus to: performing a first symbol-to-bit conversion operation on the first set of concatenated shaped symbols to obtain a first bitstream; and A second symbol-to-bit conversion operation is performed on the second set of concatenated shaped symbols to obtain a second bit stream.

8. The apparatus of claim 7, wherein the instructions are further executable by the processor to cause the apparatus to: interleaving the first bitstream and the second bitstream based at least in part on the first frequency subband and the second frequency subband to obtain an interleaved bitstream; and Encoding the interleaved bitstream using an encoder of the wireless device, wherein encoding the interleaved bitstream comprises: A set of parity bits is generated based at least in part on the first set of concatenated shaped symbols and the second set of concatenated shaped symbols, and wherein sending the message is based at least in part on the encoding.

9. The apparatus of claim 8, wherein the instructions are further executable by the processor to cause the apparatus to: The set of parity bits is multiplexed with one or more unshaped information bits in the set of information bits, wherein sending the message is based at least in part on the multiplexing.

10. The apparatus of claim 1 , wherein the instructions are further executable by the processor to cause the apparatus to: performing a symbol-to-bit conversion operation on the first set of concatenated shaped symbols to obtain a first bitstream; and The first bitstream is encoded using an encoder of the wireless device, wherein sending the message is based at least in part on the encoding.

11. The apparatus of claim 10, wherein the instructions for encoding the first bitstream are executable by the processor to cause the apparatus to: Using the encoder of the wireless device, a set of parity bits is generated based at least in part on the first set of concatenated shaped symbols.

12. The apparatus of claim 11, wherein the instructions are further executable by the processor to cause the apparatus to: multiplexing the set of parity bits with one or more unshaped information bits in the set of information bits to obtain a multiplexed set of bits; and Multiplexed bits in a multiplexed set of bits are interleaved based at least in part on the first frequency subband and the second frequency subband, wherein sending the message is based at least in part on the interleaving.

13. The apparatus of claim 1 , wherein the instructions for sending the message are further executable by the processor to cause the apparatus to: The first set of concatenated shaped symbols is mapped to a set of resources based at least in part on a frequency first, time second ordering, wherein the message is sent via the set of resources.

14. The apparatus according to claim 1, wherein: The block size of the first distribution matcher is based at least in part on the size of the first frequency sub-band; and The block size of the second distribution matcher is based at least in part on a size of the second frequency sub-band.

15. The apparatus of claim 14, wherein the instructions are further executable by the processor to cause the apparatus to: Control signaling is received indicating the size of the first frequency sub-band and the size of the second frequency sub-band.

16. The apparatus of claim 14, wherein the size of the first frequency sub-band and the size of the second frequency sub-band are based at least in part on bandwidth.

17. The apparatus of claim 1 , wherein the instructions are further executable by the processor to cause the apparatus to: A signal is received indicating one or more parameters for the first distribution matcher, one or more parameters for the second distribution matcher, or a combination thereof.

18. A method for wireless communication at a wireless device, the method comprising: generating a first set of shaped symbols corresponding to a first subset of a set of information bits using a first distribution matcher of the wireless device, the first distribution matcher being associated with a first frequency subband; generating a second set of shaped symbols corresponding to a second subset of the set of information bits using a second distribution matcher of the wireless device, the second distribution matcher being associated with a second frequency subband; partitioning the first set of shaped symbols into a first set of sub-blocks, wherein each sub-block in the first set of sub-blocks comprises a respective subset of the first set of shaped symbols; partitioning the second set of shaped symbols into a second set of sub-blocks, wherein each sub-block in the second set of sub-blocks comprises a respective subset of the second set of shaped symbols; concatenating a first subblock of the first set of subblocks with a second subblock of the second set of subblocks to obtain a first set of concatenated shaped symbols, wherein the first set of concatenated shaped symbols is associated with the first frequency subband and the second frequency subband; as well as A message is sent comprising at least the first set of concatenated shaped symbols.

19. The method according to claim 18, further comprising: mapping the first set of shaped symbols to a first time-frequency matrix representation of a resource grid, wherein partitioning the first set of shaped symbols is based at least in part on the first time-frequency matrix representation; as well as The second set of shaped symbols is mapped to a second time-frequency matrix representation of the resource grid, wherein partitioning the second set of shaped symbols is based at least in part on the second time-frequency matrix representation.

20. The method of claim 19, wherein: The first time-frequency matrix representation corresponds to a first number of frequency-domain resources and a first number of time-domain resources; and The second time-frequency matrix representation corresponds to a second number of frequency-domain resources and a second number of time-domain resources.

21. The method according to claim 20, wherein: The number of sub-blocks in the first set of sub-blocks is associated with the first number of time-domain resources; and The number of sub-blocks in the second set of sub-blocks is associated with the second number of time-domain resources.

22. The method of claim 20, wherein the number of symbols in the first set of concatenated shaped symbols is equal to the sum of the first number of frequency-domain resources and the second number of frequency-domain resources.

23. The method according to claim 18, further comprising: A third subblock of the first set of subblocks is concatenated with a fourth subblock of the second set of subblocks to obtain a second set of concatenated shaped symbols, wherein the message also includes the second set of concatenated shaped symbols.

24. The method according to claim 23, further comprising: performing a first symbol-to-bit conversion operation on the first set of concatenated shaped symbols to obtain a first bitstream; as well as A second symbol-to-bit conversion operation is performed on the second set of concatenated shaped symbols to obtain a second bit stream.

25. The method according to claim 24, further comprising: interleaving the first bitstream and the second bitstream based at least in part on the first frequency subband and the second frequency subband to obtain an interleaved bitstream; as well as The interleaved bit stream is encoded using an encoder of the wireless device, wherein encoding the interleaved bit stream comprises generating a set of parity bits based at least in part on the first set of concatenated shaped symbols and the second set of concatenated shaped symbols, and wherein sending the message is based at least in part on the encoding.

26. The method according to claim 25, further comprising: The set of parity bits is multiplexed with one or more unshaped information bits in the set of information bits, wherein sending the message is based at least in part on the multiplexing.

27. The method according to claim 18, further comprising: performing a symbol-to-bit conversion operation on the first set of concatenated shaped symbols to obtain a first bitstream; as well as The first bitstream is encoded using an encoder of the wireless device, wherein sending the message is based at least in part on the encoding.

28. The method of claim 27, wherein encoding the first bitstream comprises: Using the encoder of the wireless device, a set of parity bits is generated based at least in part on the first set of concatenated shaped symbols.

29. The method according to claim 28, further comprising: multiplexing the set of parity bits with one or more unshaped information bits in the set of information bits to obtain a multiplexed set of bits; as well as Multiplexed bits in a multiplexed set of bits are interleaved based at least in part on the first frequency subband and the second frequency subband, wherein sending the message is based at least in part on the interleaving.

30. A non-transitory computer-readable medium storing code for wireless communication at a wireless device, the code comprising instructions executable by a processor to: generating a first set of shaped symbols corresponding to a first subset of a set of information bits using a first distribution matcher of the wireless device, the first distribution matcher being associated with a first frequency subband; generating a second set of shaped symbols corresponding to a second subset of the set of information bits using a second distribution matcher of the wireless device, the second distribution matcher being associated with a second frequency subband; partitioning the first set of shaped symbols into a first set of sub-blocks, wherein each sub-block in the first set of sub-blocks comprises a respective subset of the first set of shaped symbols; partitioning the second set of shaped symbols into a second set of sub-blocks, wherein each sub-block in the second set of sub-blocks comprises a respective subset of the second set of shaped symbols; concatenating a first subblock of the first set of subblocks with a second subblock of the second set of subblocks to obtain a first set of concatenated shaped symbols, wherein the first set of concatenated shaped symbols is associated with the first frequency subband and the second frequency subband; as well as A message is sent comprising at least the first set of concatenated shaped symbols.

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