Code block group-based transmission for multi-codeword channels

Abstract

Methods, systems, and devices for wireless communication are described. In some systems, a user equipment (UE) may receive a resource grant that schedules a first transport block and a second transport block during a reception opportunity on a component carrier. The UE may receive the first transport block and the second transport block during the reception opportunity. The UE may transmit a feedback message associated with hybrid automatic repeat request feedback. The feedback message may include a first number of feedback bits for the first transport block and a second number of feedback bits for the second transport block, wherein the first number of feedback bits is different from the second number of feedback bits.

Description

[0001] Cross-references

[0002] This patent application claims priority to U.S. patent application No. 17 / 827,299, filed by Khoshnevisan et al. on May 27, 2022, entitled “CODEBLOCK GROUP-BASED TRANSMISSIONS FOR MULTI-CODEWORD CHANNELS,” which is assigned to the assignee of this application and is expressly incorporated herein by reference. Technical Field

[0003] The following relates to wireless communications including codeblock group based transmissions for multi-codeword channels. Background Art

[0004] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcasting, 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 of communication devices, which may be referred to as user equipment (UE). Summary of the invention

[0005] The described techniques relate to improved methods, systems, devices, and apparatuses that support code block group (CBG)-based transmission for multi-codeword channels. For example, the described techniques provide a communication device (e.g., user equipment (UE)) and a network entity that support enhanced feedback for a physical downlink shared channel (PDSCH) comprising multiple transport blocks. For example, the UE may receive multiple transport blocks communicated via a single PDSCH opportunity, and may report feedback for a first transport block including a first number of feedback bits, and feedback for a second transport block including a second number of bits. For example, the UE may transmit transport block-based feedback with one bit for the first transport block, and CBG-based feedback with a certain number of bits (e.g., a number of bits equal to the number of CBGs configured per transport block) for the second transport block. In some examples, the UE may send CBG-based feedback for two transport blocks received in a PDSCH opportunity, but may be configured to provide a first number of feedback bits for the first transport block (e.g., based on a first configured threshold number of CBGs) and a second number of feedback bits for the second transport block (e.g., based on a second configured threshold number of CBGs).

[0006] A method for wireless communication at a user equipment (UE) is described. The method may include: receiving a resource grant scheduling a first transport block and a second transport block during a receive opportunity on a component carrier; receiving the first transport block and the second transport block during the receive opportunity; and sending a feedback message associated with a hybrid automatic repeat request feedback and including a first number of feedback bits for the first transport block and a second number of feedback bits for the second transport block, wherein the first number of feedback bits is different from the second number of feedback bits.

[0007] An apparatus for wireless communication at a UE 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: receive a resource grant scheduling a first transport block and a second transport block during a receive opportunity on a component carrier; receive the first transport block and the second transport block during the receive opportunity; and send a feedback message associated with a hybrid automatic repeat request feedback and including a first number of feedback bits for the first transport block and a second number of feedback bits for the second transport block, wherein the first number of feedback bits is different from the second number of feedback bits.

[0008] Another apparatus for wireless communication at a UE is described. The apparatus may include: means for receiving a resource grant scheduling a first transport block and a second transport block during a receive opportunity on a component carrier; means for receiving the first transport block and the second transport block during the receive opportunity; and means for sending a feedback message associated with hybrid automatic repeat request feedback and including a first number of feedback bits for the first transport block and a second number of feedback bits for the second transport block, wherein the first number of feedback bits is different from the second number of feedback bits.

[0009] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions executable by a processor to: receive a resource grant scheduling a first transport block and a second transport block during a receive opportunity on a component carrier; receive the first transport block and the second transport block during the receive opportunity; and send a feedback message associated with hybrid automatic repeat request feedback and including a first number of feedback bits for the first transport block and a second number of feedback bits for the second transport block, wherein the first number of feedback bits is different from the second number of feedback bits.

[0010] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for the following actions: receiving control signaling, the control signaling including an indication of transport block level feedback and CBG level feedback, the transport block level feedback including the first number of feedback bits for the first transport block, the CBG level feedback including the second number of feedback bits for the second transport block, the first number of feedback bits including one feedback bit, and the second number of feedback bits including more than one feedback bit associated with a threshold number of CBGs.

[0011] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for mapping the first number of feedback bits to the first transport block and mapping the second number of feedback bits to the second transport block based on a comparison between a first value of one or more parameters of the first transport block and a second value of the one or more parameters of the second transport block, the one or more parameters including a transport block size, a number of codebooks, a modulation and coding scheme, a transmission rank, an order of identifiers in the resource grant, or a combination thereof.

[0012] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for the following actions: generating a first part of the feedback message based on a first subcode associated with a transmission block level feedback, the first part including the one feedback bit associated with the first transmission block; and generating a second part of the feedback message based on a second subcode associated with a CBG level feedback, the second part including the second number of feedback bits associated with the second transmission block.

[0013] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, means, or instructions for receiving, in the resource grant, a first set of downlink assignment indexes associated with the first sub-codebook and a second set of downlink assignment indexes associated with the second sub-codebook, wherein generating the first portion of the feedback message may be based on the first set of downlink assignment indexes, and generating the second portion of the feedback message may be based on the second set of downlink assignment indexes.

[0014] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for the following actions: generating a first part of the feedback message based on a first subcodebook with CBG level feedback, the first part including the one feedback bit associated with the first transmission block and the second number of feedback bits associated with the second transmission block.

[0015] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, means, or instructions for receiving, in the resource grant, a set of downlink assignment indexes for the first subcodebook and the second subcodebook with transport block level feedback, wherein each downlink assignment index position associated with a corresponding downlink assignment index in the set of downlink assignment indexes may be associated with a number of feedback bits, the number of feedback bits being greater than or equal to a sum of the first number of feedback bits and the second number of feedback bits.

[0016] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, each downlink assignment index position associated with a corresponding downlink assignment index in the set of downlink assignment indices may be associated with the number of feedback bits, which may be based on a threshold number of feedback bits supported on a set of multiple component carriers including the component carrier.

[0017] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for the following actions: generating the feedback message according to a feedback codebook, the feedback message including a total number of feedback bits corresponding to a set of multiple reception opportunities on the component carrier.

[0018] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, each reception opportunity in the set of multiple reception opportunities corresponds to a subset of the total number of feedback bits, the subset being equal to the product of two and a threshold number of CBGs.

[0019] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, each reception opportunity in the set of multiple reception opportunities corresponds to a subset of the total number of feedback bits, the subset being equal to the sum of the first number of feedback bits and the second number of feedback bits.

[0020] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for the following actions: generating the feedback message according to the feedback codebook, the feedback message including a total number of feedback bits corresponding to a set of multiple feedback process identifiers, wherein each feedback process identifier in the set of multiple feedback process identifiers corresponds to a subset of the total number of feedback bits, the subset being equal to the sum of the first number of feedback bits and the second number of feedback bits.

[0021] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for the following actions: receiving control signaling, the control signaling including an indication of the first number of feedback bits for the first transport block and the second number of feedback bits for the second transport block, wherein the second number of feedback bits may be greater than the second number of feedback bits.

[0022] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for the following actions: mapping the first number of feedback bits to the first transport block and mapping the second number of feedback bits to the second transport block based on a comparison between values ​​of one or more parameters of the first transport block and corresponding values ​​of the one or more parameters of the second transport block, the one or more parameters including a transport block size, a number of codebooks, a modulation and coding scheme, a transmission rank, an order of identifiers in the resource grant, or a combination thereof.

[0023] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for generating a first portion of the feedback message based on a subcodebook with CBG-level feedback, the first portion comprising the first number of feedback bits associated with the first transport block and the second number of feedback bits associated with the second transport block.

[0024] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, means, or instructions for receiving, in the resource grant, a set of downlink assignment indexes for the subcodebook, wherein each downlink assignment index position associated with a corresponding downlink assignment index in the set of downlink assignment indexes may be associated with a number of feedback bits, the number of feedback bits being equal to a sum of the first number of feedback bits and the second number of feedback bits.

[0025] A method of wireless communication at a network entity is described. The method may include: outputting a resource grant scheduling a first transport block and a second transport block during a receive opportunity on a component carrier; obtaining the first transport block and the second transport block during the receive opportunity based on receiving the resource grant; and obtaining a feedback message associated with hybrid automatic repeat request feedback and including a first number of feedback bits for the first transport block and a second number of feedback bits for the second transport block, wherein the first number of feedback bits is different from the second number of feedback bits.

[0026] An apparatus for wireless communication at a network entity 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: output a resource grant scheduling a first transport block and a second transport block during a receive opportunity on a component carrier; obtain the first transport block and the second transport block during the receive opportunity based on receiving the resource grant; and obtain a feedback message associated with hybrid automatic repeat request feedback and including a first number of feedback bits for the first transport block and a second number of feedback bits for the second transport block, wherein the first number of feedback bits is different from the second number of feedback bits.

[0027] Another apparatus for wireless communication at a network entity is described. The apparatus may include: means for outputting a resource grant scheduling a first transport block and a second transport block during a receive opportunity on a component carrier; means for obtaining the first transport block and the second transport block during the receive opportunity based on receiving the resource grant; and means for obtaining a feedback message associated with hybrid automatic repeat request feedback and including a first number of feedback bits for the first transport block and a second number of feedback bits for the second transport block, wherein the first number of feedback bits is different from the second number of feedback bits.

[0028] A non-transitory computer-readable medium storing code for wireless communication at a network entity is described. The code may include instructions executable by a processor to: output a resource grant scheduling a first transport block and a second transport block during a receive opportunity on a component carrier; obtain the first transport block and the second transport block during the receive opportunity based on receiving the resource grant; and obtain a feedback message associated with hybrid automatic repeat request feedback and including a first number of feedback bits for the first transport block and a second number of feedback bits for the second transport block, wherein the first number of feedback bits is different from the second number of feedback bits.

[0029] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for the following actions: outputting control signaling, the control signaling including an indication of transport block level feedback and CBG level feedback, the transport block level feedback including the first number of feedback bits for the first transport block, the CBG level feedback including the second number of feedback bits for the second transport block, the first number of feedback bits including one feedback bit, and the second number of feedback bits including more than one feedback bit associated with a threshold number of CBGs.

[0030] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for: decoding a first portion of the feedback message according to a first subcode associated with a transport block level feedback, the first portion including the one feedback bit associated with the first transport block; and decoding a second portion of the feedback message according to a second subcode associated with a CBG level feedback, the second portion including the second number of feedback bits associated with the second transport block.

[0031] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, means, or instructions for outputting, in the resource grant, a first set of downlink assignment indexes associated with the first sub-codebook and a second set of downlink assignment indexes associated with the second sub-codebook, wherein decoding the first portion of the feedback message may be based on the first set of downlink assignment indexes, and decoding the second portion of the feedback message may be based on the second set of downlink assignment indexes.

[0032] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for decoding a first portion of the feedback message according to a first subcodebook with CBG-level feedback, the first portion including the one feedback bit associated with the first transport block and the second number of feedback bits associated with the second transport block.

[0033] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, means, or instructions for outputting, in the resource grant, a set of downlink assignment indexes for the first subcodebook and the second subcodebook with transport block level feedback, wherein each downlink assignment index position associated with a corresponding downlink assignment index in the set of downlink assignment indexes may be associated with a number of feedback bits, the number of feedback bits being greater than or equal to a sum of the first number of feedback bits and the second number of feedback bits.

[0034] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, each downlink assignment index position associated with a corresponding downlink assignment index in the set of downlink assignment indices may be associated with the number of feedback bits, which may be based on a threshold number of feedback bits supported on a set of multiple component carriers including the component carrier.

[0035] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for the following actions: output control signaling, the control signaling including an indication of the first number of feedback bits for the first transmission block and the second number of feedback bits for the second transmission block, wherein the second number of feedback bits may be greater than the second number of feedback bits.

[0036] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for decoding a first portion of the feedback message according to a subcodebook with CBG-level feedback, the first portion including the first number of feedback bits associated with the first transport block and the second number of feedback bits associated with the second transport block.

[0037] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, means, or instructions for outputting, in the resource grant, a set of downlink assignment indexes for the subcodebook, wherein each downlink assignment index position associated with a corresponding downlink assignment index in the set of downlink assignment indexes may be associated with a number of feedback bits, the number of feedback bits being equal to a sum of the first number of feedback bits and the second number of feedback bits. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 An example of a wireless communication system supporting code block group (CBG) based transmission for a multi-codeword channel according to one or more aspects of the present disclosure is illustrated.

[0039] Figure 2An example of a wireless communication system supporting CBG-based transmission for multi-codeword channels according to one or more aspects of the present disclosure is illustrated.

[0040] Figure 3 An example of a mapping scheme supporting CBG-based transmission for a multi-codeword channel according to one or more aspects of the present disclosure is illustrated.

[0041] Figure 4 An example of a mapping scheme supporting CBG-based transmission for a multi-codeword channel according to one or more aspects of the present disclosure is illustrated.

[0042] Figure 5 An example of a process flow supporting CBG-based transmission for multi-codeword channels in accordance with one or more aspects of the present disclosure is illustrated.

[0043] Figure 6 and Figure 7 A block diagram of a device supporting CBG-based transmission for multi-codeword channels according to one or more aspects of the present disclosure is shown.

[0044] Figure 8 A block diagram of a communication manager supporting CBG-based transmission for multi-codeword channels in accordance with one or more aspects of the present disclosure is shown.

[0045] Fig. 9 A diagram of a system including a device supporting CBG-based transmission for multi-codeword channels according to one or more aspects of the present disclosure is shown.

[0046] Fig.10 and Fig.11 A block diagram of a device supporting CBG-based transmission for multi-codeword channels according to one or more aspects of the present disclosure is shown.

[0047] Fig.12 A block diagram of a communication manager supporting CBG-based transmission for multi-codeword channels in accordance with one or more aspects of the present disclosure is shown.

[0048] Fig.13 A diagram of a system including a device supporting CBG-based transmission for multi-codeword channels according to one or more aspects of the present disclosure is shown.

[0049] Figures 14 to 19 A flow chart illustrating a method of supporting CBG-based transmission for multi-codeword channels according to one or more aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0050] In a wireless communication system, a user equipment (UE) may receive downlink signaling including one or more transport blocks, and may provide hybrid automatic repeat request (HARQ) feedback. A transport block may include multiple CBGs, and a CBG may include one or more code blocks. HARQ feedback may be provided at a transport block level (e.g., a single bit indicating whether a transport block is successfully received) or a code block group (CBG) level (e.g., a group of bits indicating whether a separate CBG of a transport block has been successfully received). Upon receiving CBG-level feedback, a network entity may retransmit a CBG corresponding to a code block erroneously received by the UE.

[0051] The network device may transmit one or more transmission blocks on a single physical downlink shared channel (PDSCH) opportunity, and may use one or more layers to transmit these transmission blocks. If the network entity uses more than four layers to schedule the resources to be transmitted thereon, the network entity may send a DCI message that schedules two transmission blocks to be communicated via the same PDSCH opportunity. Because different modulation and coding schemes (MCS) or different numbers of layers per PDSCH opportunity may result in different transmission block sizes, each transmission block may include a different number of code blocks. However, if the UE is configured to provide CBG-level feedback and is configured with a single threshold number of CBGs, the UE may provide CBG-level feedback (e.g., the same number of feedback bits for each transmission block) for two transmission blocks, even though the two transmission blocks have different parameter values ​​(e.g., different sizes, different MCSs, different numbers of code blocks, etc.). In such examples, the UE may not be configured to send CBG-based HARQ feedback for the first transmission block and transmission block-based feedback for the second transmission block. Similarly, the UE may not be configured to send CBG-based feedback for two transport blocks according to different threshold numbers of CBGs (e.g., using different granularity and different number of bits). However, sending feedback using the same granularity (e.g., the same number of CBGs for each TB) may result in unnecessary signaling overhead, unnecessary triggering of retransmissions, inefficient use of computing resources and system resources, and increased system latency.

[0052] The technical support described herein enables UEs and network entities to support enhanced CBG-based feedback for PDSCH opportunities including multiple transport blocks to support higher data rates and spectral efficiency. For example, in the described technology, a UE may receive multiple transport blocks communicated via a single PDSCH opportunity, and may report feedback for the first transport block including a first number of feedback bits, and feedback for the second transport block including a second number of bits. For example, the UE may be configured (e.g., via higher layer signaling) to transmit a transport block-based feedback with one bit for the first transport block, and a CBG-based feedback with a certain number of bits (e.g., a number of bits equal to the number of CBGs configured per transport block) for the second transport block. In some examples, the UE may be configured with two threshold numbers of CBGs, and may send CBG-based feedback for two transport blocks received in the PDSCH opportunity, but may be configured to provide a first number of feedback bits for the first transport block (e.g., according to a first configured threshold number of CBGs) and a second number of feedback bits for the second transport block (e.g., according to a second configured threshold number of CBGs).

[0053] In some examples, the UE may generate and transmit a transport block-based HARQ feedback with one bit for a first transport block, and a CBG-based HARQ feedback with N bits (N=maximum number of CBGs per transport block) for a second transport block. The value of N may be configured by radio resource control (RRC) signaling. Additionally or alternatively, the UE may send CBG-based feedback based on being configured so that the first transport block has a maximum number of N1 CBGs (N1=maximum number of CBGs for the first transport block) and the second transport block has a maximum number of N2 CBGs (N2=maximum number of CBGs for the second first transport block), where N2 is greater than N1. The values ​​of N1 and N2 may be configured by RRC signaling. In both proposals, the UE may determine the first transport block and the second transport block based on one or more parameters (e.g., MCS value, size, sorting, etc.).

[0054] Aspects of the present disclosure are first described in the context of a wireless communication system. Aspects of the present disclosure are further illustrated and described with reference to mapping schemes and process flows. Aspects of the present disclosure are further illustrated and described with reference to apparatus diagrams, system diagrams, and flow diagrams involving CBG-based transmission for multi-codeword channels.

[0055] Figure 1An example of a wireless communication system 100 supporting code block group-based transmission for a multi-codeword channel 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).

[0056] 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, etc. In some examples, the network entities 105 and the UE 115 may communicate wirelessly via one or more communication links 125 (e.g., radio frequency (RF) access links). For example, the network entity 105 may support a coverage area 110 (e.g., a geographic coverage area) over which the UE 115 and the network entity 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area over which the network entity 105 and the UE 115 may support signal communications according to one or more radio access technologies (RATs).

[0057] 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 stationary and mobile at different times. The UEs 115 may be devices that take different form factors or have different capabilities. Figure 1 Some example UEs 115 are illustrated in FIG. 1. The UEs 115 described herein may be capable of supporting communication with various types of devices, such as Figure 1 105 or other UEs 115 or network entities 105) shown in FIG.

[0058] As described herein, a node of the wireless communication system 100 (which may be referred to as a network node or a wireless node) may be a network entity 105 (e.g., any network entity described herein), a UE 115 (e.g., any UE described herein), a network controller, an apparatus, a device, a computing system, one or more components, or another suitable processing entity configured to perform any of the techniques described herein. For example, 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 a second node.

[0059] In some examples, the network entities 105 may communicate with the core network 130, or communicate with each other, or both. For example, the network entities 105 may communicate with the core network 130 via one or more backhaul links 120 (e.g., according to S1, N2, N3 or other interface protocols). In some examples, the network entities 105 may communicate with each other on the backhaul link 120 (e.g., according to X2, Xn or other interface protocols) directly (e.g., directly between the network entities 105) or indirectly (e.g., via the core network 130). In some examples, the network entities 105 may communicate with each other via the midhaul communication link 162 (e.g., according to the midhaul interface protocol) or the fronthaul communication link 168 (e.g., according to the fronthaul interface protocol) or any combination thereof. The backhaul communication link 120, the midhaul communication link 162, or the fronthaul communication link 168 may be or include one or more wired links (e.g., electrical links, optical fiber 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 .

[0060] 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 transceiver base 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 terms). In some examples, the network entity 105 (e.g., a base station 140) may be implemented in an aggregated (e.g., monolithic, stand-alone) base station architecture, which may be configured to utilize a protocol stack physically or logically integrated within a single network entity 105 (e.g., a single RAN node, such as a base station 140).

[0061] In some examples, the network entity 105 may be implemented in a disaggregated architecture (e.g., a disaggregated base station architecture, a disaggregated RAN architecture) that may 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 may include one or more of the following: a central unit (CU) 160, a distributed unit (DU) 165, a radio unit (RU) 170, a RAN intelligent controller (RIC) 175 (e.g., a near real-time RIC (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, a smart radio head, a remote radio head (RRH), a remote radio unit (RRU), or a transmit receive point (TRP). One or more components of the network entity 105 in the decomposed 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 decomposed RAN architecture may be implemented as virtual units (e.g., virtual CU (VCU), virtual DU (VDU), virtual RU (VRU)).

[0062] The functional split between CU 160, DU 165, and RU 170 is flexible and may support different functionalities depending on which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, and any combination thereof) are performed at CU 160, DU 165, and RU 170. For example, a functional split of a protocol stack may be employed between CU 160 and DU 165 such that CU 160 may support one or more layers of a protocol stack and DU 165 may support one or more different layers of a protocol stack. In some examples, CU 160 may host higher protocol layer (e.g., layer 3 (L3), layer 2 (L2)) functionality 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) functionality and signaling, and may both 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 CU 160 and DU 165 or between DU 165 and RU 170 may be within the protocol layer (e.g., some functions of the protocol layer may be performed by one of CU 160, DU 165, or RU 170, while other functions of the protocol layer are performed by a different one of CU 160, DU 165, or RU 170). CU 160 may be further functionally split into CU control plane (CU-CP) and CU user plane (CU-UP) functions. CU 160 may be connected to one or more DUs 165 via midhaul communication links 162 (e.g., F1, F1-c, F1-u), and DU 165 may 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 based on interfaces (eg, channels) between layers of a protocol stack supported by respective network entities 105 that communicate via those communication links.

[0063] In some wireless communication systems (e.g., wireless communication system 100), 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 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 donor entities or IAB donors. One or more DUs 165 or one or more RUs 170 may be controlled in part by one or more CUs 160 associated with a donor network entity 105 (e.g., donor base station 140). One or more donor network entities 105 (e.g., IAB donors) may communicate with one or more additional network entities 105 (e.g., IAB nodes 104) via supported access and backhaul links (e.g., backhaul communication links 120). The IAB node 104 may include an IAB mobile termination (IAB-MT) controlled (e.g., scheduled) by a DU 165 of a 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.

[0064] For example, an access network (AN) or RAN may include an access node (e.g., an IAB host), communications between an IAB node 104, and one or more UEs 115. The IAB host may facilitate a connection 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 host may refer to a RAN node having a wired or wireless connection to the core network 130. The IAB host 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 host and the IAB node 104 may communicate via an F1 interface according to a protocol defining a signaling message (e.g., an F1 AP protocol). Additionally or alternatively, CU 160 may communicate with the core network via an interface (which may be an example of part of a backhaul link) and may communicate with other CUs 160 (e.g., CU 160 associated with an alternative IAB host) via an Xn-C interface (which may be an example of part of a backhaul link).

[0065] 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.). DU 165 may act as a distributed scheduling node toward child nodes associated with IAB node 104, and IAB-MT may act as a scheduled node toward a parent node associated with IAB node 104. That is, an IAB host may be referred to as a parent node that communicates with one or more child nodes (e.g., an IAB host may relay for UE transmissions through one or more other IAB nodes 104). Additionally or alternatively, depending on the relay chain or configuration of the AN, an 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 .

[0066] For example, the IAB node 104 may be referred to as a parent node that supports child IAB node communications and as a child node associated with the IAB host. The IAB host may include a CU 160 having a wired or wireless connection (e.g., a backhaul communication link 120) to the core network 130, and may act as a parent node of the IAB node 104. For example, the DU 165 of the IAB host may relay transmission to the UE 115 via the IAB node 104, and may directly signal the transmission to the UE 115. The CU 160 of the IAB host may signal the establishment of a communication link to the IAB node 104 via the F1 interface, and the IAB node 104 may schedule transmission (e.g., transmission relayed from the IAB host to the UE 115) via the DU 165. That is, data may be relayed to and from the IAB node 104 via signaling via the NR Uu interface to the MT of the IAB node 104. Communications with the IAB node 104 may be scheduled by the DU 165 of the IAB host, and communications with the IAB node 104 may be scheduled by the DU 165 of the IAB node 104 .

[0067] In the context of the application of the techniques described herein to a disaggregated RAN architecture, one or more components of the disaggregated RAN architecture may be configured to support CBG-based transmission for multi-codeword channels as described herein. For example, some operations described as being performed by UE 115 or network entity 105 (e.g., base station 140) may additionally or alternatively be performed by one or more components of the disaggregated RAN architecture (e.g., IAB node 104, DU 165, CU 160, RU 170, RIC 175, SMO 180).

[0068] 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 term, where a "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 electrical appliances or vehicles, meters, etc.

[0069] like Figure 1As shown, the UE 115 described herein may be able to communicate with various types of devices, such as other UEs 115, which may sometimes act as repeaters, as well as network entities 105 and network equipment, including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, etc.

[0070] The UE 115 and the network entity 105 may use resources associated with one or more carriers to wirelessly communicate with each other via one or more communication links 125 (e.g., access links). The term "carrier" may refer to a set of RF spectrum resources having a defined physical layer structure to support the communication link 125. For example, a carrier 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 to have 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 these devices and any part (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 part 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).

[0071] 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 for discovery by UE 115. A carrier may operate in a standalone mode, in which case initial acquisition and connection may be performed by UE 115 via the carrier, or a carrier may operate in a non-standalone mode, in which case the connection is anchored using a different carrier (e.g., a different carrier of the same or different radio access technology).

[0072] 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, as well as other transmission configurations. A carrier may carry either downlink communications or uplink communications (e.g., in FDD mode), or may be configured to carry both downlink communications and uplink communications (e.g., in TDD mode).

[0073] 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 a "system bandwidth" of the carrier or wireless communication system 100. For example, the carrier bandwidth may be one of a set of bandwidths (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz)) of a carrier of a particular radio access technology. A device (e.g., a network entity 105, a UE 115, or both) of the wireless communication system 100 may have a hardware configuration that supports communications using a particular carrier bandwidth, or may be configurable to support communications using one of a 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 subband, a BWP) or all of a carrier bandwidth.

[0074] The signal waveform transmitted via the carrier may include multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques, such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). In a system using MCM techniques, a resource element may refer to a resource of one symbol period (e.g., the duration of one modulation symbol) and one subcarrier, where 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), so that a relatively high number of resource elements (e.g., in the transmission duration) and a relatively high order modulation scheme may correspond to a relatively high communication rate. 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 communication with UE 115.

[0075] One or more parameter sets for a carrier may be supported, and the parameter sets may include subcarrier spacing (Δf) and cyclic prefixes. 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 for a UE 115 may be constrained to one or more active BWPs.

[0076] The time interval of the network entity 105 or the UE 115 may be expressed as a multiple of a basic time unit, which may be, for example, a sampling period T s =1 / (Δf max ·N f ) seconds, where Δf max It can represent the supported subcarrier spacing, and N f The supported discrete Fourier transform (DFT) size may be indicated. The time intervals of the communication resources may be organized according to radio frames, each radio frame 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).

[0077] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, the frame may be divided into subframes (e.g., in the time domain), 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 added before 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 ) sampling period. The duration of a symbol period may depend on the subcarrier spacing or the operating frequency band.

[0078] A subframe, a time slot, a mini-time slot, or a 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 transmission 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 a burst of a shortened TTI (sTTI)).

[0079] Physical channels may be multiplexed for communication using a carrier according to various techniques. For example, physical control channels and physical data channels may be multiplexed for signaling via a downlink carrier using one or more of a time division multiplexing (TDM) technique, a frequency division multiplexing (FDM) technique, or a hybrid TDM-FDM technique. 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 a system bandwidth or a subset of a system bandwidth of a carrier. One or more control regions (e.g., CORESETs) may be configured for a group of UEs 115. For example, one or more of the 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 the control channel candidate may refer to the number of control channel resources (e.g., control channel elements (CCEs)) associated with the coding 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 a plurality of UEs 115 , and a UE-specific search space set for transmitting control information to a specific UE 115 .

[0080] In some examples, the network entities 105 (e.g., base stations 140, RUs 170) may be mobile and thus provide communication coverage for mobile coverage areas 110. In some examples, different coverage areas 110 associated with different technologies may overlap, but the different coverage areas 110 may be supported by the same network entity 105. In some other examples, overlapping coverage areas 110 associated with different technologies may be supported by different network entities 105. The wireless communication system 100 may include, for example, a heterogeneous network in which different types of network entities 105 provide coverage for various coverage areas 110 using the same or different radio access technologies.

[0081] 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 with integrated sensors or meters to measure or capture information and relay such information to a central server or application that uses the information or presents the information 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 geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based business charging.

[0082] Some UEs 115 may be configured to employ a mode of operation that reduces power consumption, such as half-duplex communication (e.g., a mode that supports unidirectional communication via transmission or reception but does not transmit and receive concurrently). In some examples, half-duplex communication may be performed with a reduced peak rate. Other power conservation techniques for UEs 115 include entering a power-saving deep sleep mode when not engaged in active communications, operating using limited bandwidth (e.g., according to narrowband communications), or a combination of these techniques. For example, some UEs 115 may be configured to operate using a narrowband protocol type that is associated with a defined portion or range (e.g., a set of subcarriers or resource blocks (RBs)) within a carrier, within a guard band of a carrier, or outside a carrier.

[0083] 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 functions. Ultra-reliable communication may include private communication or group communication, and may be supported by one or more services (such as push-to-talk, video or data). Support for ultra-reliable, low-latency functions may include prioritization of services, and such services may be used for public safety or general commercial applications. The terms ultra-reliable, low-latency and ultra-reliable low-latency are used interchangeably herein.

[0084] In some examples, a UE 115 may be configured to support communication directly with other UEs 115 over 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 that are performing D2D communication may be within a coverage area 110 of a network entity 105 (e.g., a base station 140, a RU 170), which may support aspects of such D2D communication configured (or scheduled) by the network entity 105. In some examples, one or more UEs 115 in the group may be outside the coverage area 110 of the network entity 105, or may 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 may support a one-to-many (1:M) system, in which each UE 115 transmits to each UE 115 in the group. In some examples, the network entity 105 may facilitate scheduling resources for D2D communication. In some other examples, D2D communications may be performed between UEs 115 without involving network entity 105 .

[0085] 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 of these items. 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, 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.

[0086] 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 for managing access and mobility (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) and at least one user plane entity for routing packets or interconnecting to an external network (e.g., a serving gateway (S-GW)), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)). The control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management of UE 115 served by a network entity 105 (e.g., a base station 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 an IP service 150 for one or more network operators. The IP services 150 may include access to the Internet, an intranet, an IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0087] The wireless communication system 100 may operate using one or more frequency bands that may be in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Typically, the region from 300 MHz to 3 GHz is referred to as the ultra-high frequency (UHF) region or decimeter band because the wavelength range length is about one decimeter to one meter. UHF waves may be blocked or redirected by buildings and environmental features, and these waves may be referred to as clusters, but these waves may be sufficient to penetrate structures so that macro cells provide services to UEs 115 located indoors. Compared to communications using lower frequencies and longer waves in the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz, communications using UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers).

[0088] The wireless communication system 100 may also operate in a super high frequency (SHF) region (also known as a centimeter band) in the range of 3 GHz to 30 GHz or in an extremely high frequency (EHF) region (e.g., 30 GHz to 300 GHz) (also known as a millimeter band) using a spectrum. In some examples, the wireless communication system 100 may support millimeter wave (mmW) communication between UE 115 and network entity 105 (e.g., base station 140, RU 170), and the EHF antenna of the corresponding device may be smaller and closer than the UHF antenna. 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 shorter range than SHF or UHF transmissions. The technology disclosed herein may be adopted 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.

[0089] The wireless communication system 100 can utilize licensed and unlicensed RF spectrum bands. For example, the wireless communication system 100 may employ licensed assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology using unlicensed bands such as the 5 GHz industrial, scientific, and medical (ISM) band. When operating using unlicensed RF spectrum bands, devices such as network entities 105 and UE 115 may employ carrier sensing for conflict detection and avoidance. In some examples, operations using unlicensed bands may be based on a carrier aggregation configuration combined with component carriers operating using licensed bands (e.g., LAA). Operations using unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, and the like.

[0090] The network entity 105 (e.g., base station 140, RU 170) or UE 115 may be equipped with multiple antennas, which can be used to employ technologies such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communication or beamforming. The antennas of the network entity 105 or UE 115 may be located in one or more antenna arrays or antenna panels, which may support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some examples, antennas or antenna arrays associated with the network entity 105 may be located at different geographical locations. The network entity 105 may include an antenna array having a set of 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 panel may support RF beamforming for signals sent via the antenna ports.

[0091] The network entity 105 or UE 115 may use MIMO communication to utilize multipath signal propagation and improve spectral efficiency by sending or receiving multiple signals via different spatial layers. Such technology may be referred to as spatial multiplexing. Multiple signals may be, for example, sent by a transmitting device via different antennas or different combinations of antennas. Similarly, 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 technologies include: single-user MIMO (SU-MIMO), in which multiple spatial layers are sent to the same receiving device; and multi-user MIMO (MU-MIMO), in which multiple spatial layers are sent to multiple devices.

[0092] Beamforming (which may also be referred to as spatial filtering, directional transmission, or directional reception) is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., a network entity 105, a UE 115) to shape or direct an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining signals conveyed via antenna elements of an antenna array so that some signals propagating in a particular direction relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to signals conveyed via antenna elements may 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. Adjustments associated with each of these antenna elements may be defined by a set of beamforming weights associated with a particular direction (e.g., relative to the antenna array of the transmitting device or the receiving device or relative to some other direction).

[0093] The network entity 105 or the UE 115 may use beam scanning 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 sent multiple times by the network entity 105 along different directions. For example, the network entity 105 may send signals according to different sets of beamforming weights associated with different transmission 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.

[0094] Some signals (such as data signals associated with a particular receiving device) may be sent 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 such as 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 sent along one or more beam directions. For example, UE 115 may receive one or more of the signals sent 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.

[0095] 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 set of configured beams across a system bandwidth or one or more subbands. Network entity 105 may send a reference signal (e.g., a cell-specific reference signal (CRS), a channel state information reference signal (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 selection codebook). Although these techniques are described with reference to signals sent along one or more directions by a network entity 105 (e.g., base station 140, RU 170), UE 115 may use similar techniques to send signals multiple times along different directions (e.g., to identify a beam direction for subsequent transmission or reception by UE 115), or to send signals along a single direction (e.g., to send data to a receiving device).

[0096] A receiving device (e.g., UE 115) may perform receiving operations according to multiple receiving 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 receiving directions by: receiving via different antenna subarrays, processing received signals according to different antenna subarrays, receiving according to different receiving beamforming weight sets (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of an antenna array, or processing received signals according to different receiving 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 receiving configurations or receiving directions. In some examples, the receiving device may use a single receiving 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).

[0097] The wireless communication system 100 may be a packet-based network that operates according to a layered protocol stack. In the user plane, the communication of the bearer or PDCP layer may be IP-based. The RLC layer may perform packet segmentation and reassembly to communicate via logical channels. The MAC layer may perform priority processing and multiplexing of logical channels to transport channels. The MAC layer may also support retransmission using error detection techniques, error correction techniques, or both to improve link efficiency. In the control plane, the RRC layer may provide the establishment, configuration, and maintenance of an RRC connection that supports a radio bearer for user plane data between the UE 115 and the network entity 105 or the core network 130. The PHY layer may map a transport channel to a physical channel.

[0098] UE 115 and network entity 105 may support retransmission of data to increase the likelihood that the data is successfully received. 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 specific time slot for data received via a previous symbol in the time slot. In some other examples, the device may provide HARQ feedback in a subsequent time slot or according to some other time interval.

[0099] In some aspects, the UE 115 may receive one or more transport blocks or codewords via the PDSCH. The transport block may be communicated via one or more spatial layers, where v may indicate the number of spatial layers. If the UE 115 is scheduled to receive PDSCH transmissions using four or fewer layers (e.g., v≤4), the UE 115 may receive one transport block on the PDSCH. If the UE 115 is scheduled to receive PDSCH transmissions using more than four layers (e.g., v>4), the UE 115 may map the layers to multiple transport blocks and receive multiple transport blocks on the PDSCH. For example, if the UE 115 is scheduled to receive PDSCH with v>4, a radio resource control (RRC) parameter (e.g., maxNrofCodeWordsScheduledByDCI) may configure the UE 115 with a threshold number of transport blocks to be scheduled by downlink control information (DCI). Based on the RRC parameter, the UE 115 may receive DCI that schedules up to a threshold number of transport blocks.

[0100] In some examples, the wireless communication system 100 may support rate split multi-user MIMO (MU-MIMO) technology to support greater capacity and greater freedom of communication received at multiple UEs 115. For example, the network entity 105 may serve multiple UEs 115. In some cases, the network entity 105 may encode each message separately to send each message to the corresponding UE 115. However, by utilizing rate split MU-MIMO technology, the network entity 105 may encode and send a reduced number of transmissions to the UE 115, thereby reducing signaling overhead. For each UE 115 in a plurality of co-scheduled UEs 115, the network entity 105 may schedule a common transport block and a private transport block on the PDSCH. The common transport block sent to each UE 115 may include a common message that includes information for multiple UEs 115. Therefore, each UE in the UE 115 may decode the same common transport block. In contrast to the common transport block, the private transport block sent to each UE 115 may be specific to each UE 115. Thus, each UE 115 may decode a specific private transport block corresponding to each UE 115. Because multiple UEs 115 may decode a common transport block, the common transport block may have a smaller MCS and a smaller rank than a private transport block decoded by each corresponding UE 115.

[0101] In such examples, where the wireless communication system 100 may support techniques for rate splitting (e.g., in MU-MIMO communications), such techniques may result in greater communication freedom and capacity. In such examples, messages for individual UEs 115 may be split into a common part and a private part. The common parts of individual messages for two or more UEs 115 may be concatenated into a common message, encoded and modulated into a common stream (e.g., which may have one or more layers). The common stream may be pre-decoded by a pre-decoder and sent by a transmitter antenna (e.g., from one transmit / receive point (TRP) or a network entity 105 or multiple TRPs in a CoMP scenario). The private parts of individual messages (e.g., two private parts of individual messages for two corresponding UEs 115) may be separately encoded and modulated into private streams for corresponding UEs 115. The private streams may be pre-decoded by two pre-decoders, respectively, and sent by a transmitter antenna from one TRP or a network entity 105 or multiple TRPs in a CoMP scenario. In addition to encoding, the encoding process may also include modulation and mapping to one or more layers.

[0102] UE 115 may first decode the public message. A portion of the individual message for UE 115 may be embedded in the public message, which may be data intended for receiving UE 115. Therefore, UE 115 may assist in decoding the private message by decoding the public message. Additionally or alternatively, UE 115 may perform continuous interference cancellation using the decoded public message while decoding the private message. For example, UE 115 may estimate the effective channel corresponding to the public stream, and may decode the public message, re-encode the public stream, and multiply the re-encoded public stream by the estimated effective channel and subtract it from the received signal. UE may then decode the private message based on this.

[0103] UE 115 may receive one or more transport blocks, each transport block including multiple CBGs, and each CBG of the one or more transport blocks may include one or more code blocks. In some aspects, an RRC parameter (e.g., codeBlockGroupTranmission) in a downlink serving cell may configure the enabling or disabling of a transmitted CBG feature received by UE 115, and apply the CBG feature to all bandwidth parts (BWPs) of a cell associated with UE 115. As described herein, a downlink serving cell may refer to any cell with which UE 115 is actively connected or with which UE 115 exchanges data or control signaling. In some examples, an RRC parameter (e.g., maxCodeBlockGroupsPerTransportBlock) may configure a threshold number of CBGs per transport block for UE 115. If UE 115 is configured to receive one transport block (e.g., a single TB case), the RRC parameter may configure a threshold number of 2, 4, 6, or 8 CBGs per transport block for UE 115. Thus, UE 115 may be configured to receive no more than 8 CBGs per transport block in a single TB case (e.g., v≤4). If UE 115 is configured to receive two transport blocks (e.g., for a multi-TB case with maxNrofCodeWordsScheduledByDCI=2), the RRC parameters may configure a threshold number of 2 or 4 CBGs per transport block for UE 115. Thus, UE 115 may be configured to receive no more than 4 CBGs per transport block in a multi-TB case (e.g., v>4).

[0104] In response to receiving one or more transport blocks on the PDSCH, the UE 115 may indicate HARQ feedback based on the transport block or the CBG. When the UE 115 is configured for CBG-based HARQ feedback, the UE 115 may feedback a 1-bit confirmation (HARQ-ACK) per CBG. That is, the UE 115 may feedback a 1-bit indicating ACK when the UE 115 correctly decodes all code blocks in one or more code blocks in the CBG. Otherwise, the UE 115 may feedback a 1-bit indicating a negative confirmation NACK (e.g., when the UE 115 incorrectly decodes at least one code block in the one or more code blocks in the CBG). For example, if the UE 115 receives a transport block including six CBGs, and the UE 115 incorrectly decodes the first code block in the second CBG and the second code block in the fifth CBG, the UE 115 may transmit CBG-based feedback indicating [ACK, NACK, ACK, ACK, NACK, ACK] for the six CBGs.

[0105] The network entity 105 may retransmit an erroneous or incorrectly decoded CBG from a previous transmission based on the CBG-based feedback indicated by the UE 115. In some examples, the UE 115 may receive a DCI including a downlink grant, which the UE 115 may use to receive an initial transmission and retransmission of a CBG from the network entity 105. In such examples, the UE 115 may report a number of HARQ-ACK feedback bits per transport block equal to a threshold number of CBGs in the transport block. The downlink grants in the DCI may each include a CBG Transmission Information (CBGTI) field having a bit width equal to a threshold number of CBGs per transport block, wherein the CBGTI field indicates which CBGs are retransmitted by the network entity 105. In some cases, sending feedback using the same granularity (e.g., the same number of CBGs for each TB) may result in unnecessary overhead, unnecessary retransmissions, inefficient use of computational resources and system resources, and increased system latency. Therefore, CBG-based transmission of a PDSCH including multiple transport blocks may be enhanced.

[0106] In some specific implementations of the present disclosure, the UE 115 may employ enhanced CBG-based transmission for a multi-codeword channel (e.g., a PDSCH comprising multiple transport blocks). For example, the described technology provides a UE 115 and a network entity that supports enhanced feedback for a PDSCH comprising multiple transport blocks. For example, the UE 115 may receive multiple transport blocks communicated via a single PDSCH opportunity, and may report feedback for a first transport block including a first number of feedback bits, and feedback for a second transport block including a second number of bits. For example, the UE 115 may transmit transport block-based feedback with one bit for the first transport block, and CBG-based feedback with a certain number of bits (e.g., a number of bits equal to the number of CBGs configured per transport block) for the second transport block. In some examples, UE 115 may send CBG-based feedback for two transport blocks received in a PDSCH opportunity, but may be configured to provide a first number of feedback bits for the first transport block (e.g., based on a first configured threshold number of CBGs) and a second number of feedback bits for the second transport block (e.g., based on a second configured threshold number of CBGs).

[0107] Figure 2 An example of a wireless communication system 200 that supports CBG-based transmission for a multi-codeword channel according to one or more aspects of the present disclosure is illustrated. In some examples, the wireless communication system 200 can be implemented by one or more aspects of the wireless communication system 100. For example, the UE 115-a can be an example of the UE 115, and the network entity 105-a can be an example of the network entity 105, as described in reference Figure 1 described.

[0108] UE 115-a may communicate with network entity 105-a via bidirectional communication channel 125-a. In some examples, UE 115-a may receive transport blocks 210 from network entity 105. Each transport block 210 may include one or more code blocks (e.g., code blocks 225), which may be grouped into CBGs (e.g., CBGs 220). UE 115-a may support CBG-based feedback signaling.

[0109] UE 115-a may provide feedback signaling (e.g., a HARQ-ACK message indicating successful reception, or a HARQ NACK message indicating failed reception) in response to attempting to receive transport block 210. In some cases, UE 115-a may support CBG-based HARQ feedback signaling. When UE 115-a is configured for CBG-based HARQ feedback, UE 115-a may feedback 1 bit of HARQ-ACK per CBG. For example, if UE 115-a receives CBG 220-a, CBG 220-b, CBG 220-c, and CBG 220-d in transport block 210-b, UE 115-a may indicate 4 bits of HARQ-ACK for transport block 210-b. UE 115-a may feedback 1 bit indicating ACK if UE 115-a correctly decodes one or more code blocks 225 in a given CBG 220. Otherwise, UE 115-a may feedback 1 bit indicating NACK (e.g., in the event that UE 115-a incorrectly decodes at least one code block of one or more code blocks 225 in a given CBG 220). For example, if UE 115-a receives six CBGs in transport block 210-a (e.g., each of the six CBGs includes one or more code blocks 225) and UE 115-a incorrectly decodes the first code block 225 in the second CBG of transport block 210-a and the second code block in the fifth CBG of transport block 210-a, UE 115-a may transmit CBG-based feedback indicating the following for the six CBGs: ACK, NACK, ACK, ACK, NACK, ACK.

[0110] In response to receiving the indicated CBG-based HARQ feedback, the network entity 105-a may retransmit the CBGs that were erroneously received or incorrectly decoded from the previous transmission according to the CBG-based feedback indicated by the UE 115-a. In some examples, the UE 115-a may receive a grant 205 (e.g., DCI) including a downlink grant, which the UE 115-a may use to receive an initial transmission of a transport block 210 including one or more CBGs 220, and to receive retransmissions of one or more CBGs in the erroneously received CBGs 220. The UE 115 may report feedback information using a certain number of HARQ-ACK feedback bits for each transport block in the transport block 210, which is equal to a threshold number of CBGs in each transport block in the transport block 210. Therefore, the grant 205 may include a CBG transmission information (CBGTI) field that indicates which CBGs 220 are retransmitted by the network entity 105-a (e.g., in response to the CBG-based HARQ feedback). The CBGTI field of grant 205 may have a bit width equal to the threshold number of CBGs for each transport block in transport block 210. For example, if UE 115-a is configured with higher layer parameters (e.g., RRC parameter maxCodeBlockGroupsPerTransportBlock=4) and is configured to support CBG-based HARQ feedback, UE 115-a may report feedback for 4 CBGs in a given transport block 210.

[0111] In some cases, a PDSCH opportunity may include a single transport block 210 (e.g., one codeword) for up to four transmission layers (e.g., rank 4). For transmissions supporting more than four layers, subsets of the layers may be mapped to different transport blocks 210 (e.g., different codewords). For example, if a UE 115 is scheduled to receive a PDSCH with v>4, a radio resource control (RRC) parameter (e.g., maxNrofCodeWordsScheduledByDCI) may configure the UE 115 with a threshold number (e.g., 2) of transport blocks 210 to be scheduled by downlink control information (DCI). Based on the RRC parameter, the UE 115 may receive DCI that schedules up to the threshold number of transport blocks. For example, if the RRC parameter indicates a value of 2 and v=5, the first transport block 210 may be mapped to the codeword. The layer is mapped to the first transport block, and the remaining Layers are mapped to the second transport block. That is, the first transport block may be associated with two layers on the PDSCH, and the second transport block may be associated with 3 layers on the PDSCH.

[0112] Thus, UE 115-a may be configured with a threshold number of transport blocks scheduled by a DCI for a PDSCH (e.g., if the PDSCH is to carry more than 4 layers). For example, if UE 115 is configured with an RRC parameter value of 2 (e.g., RRC parameter maxNrofCodeWordsScheduledByDCI=2), UE 115-a may receive a first transport block (e.g., transport block 210-a) and a second transport block (e.g., transport block 210-b) during a PDSCH reception opportunity. The transport blocks 210 may each include one or more code blocks. The number of code blocks of a transport block 210 may be based on the number of spatial layers of the corresponding transport block 210. For example, for a PDSCH transmission having 5 layers, transport block 210-a may be associated with 2 layers, and transport block 210-b may be associated with 3 layers, in which case transport block 210-b may have more code blocks than transport block 210-a. In some cases, transport block 210-a and transport block 210-b may be different sizes. In some examples, a smaller transport block (e.g., transport block 210-a) may have a smaller modulation and coding scheme (MCS) than a larger transport block (e.g., transport block 210-b).

[0113] In some cases, even if each transport block in the transport block 210 includes a different number of code blocks, the UE 115-a may be configured to generate HARQ feedback based on the same threshold number of CBGs. For example, if the RRC parameter maxCodeBlockGroupsPerTransportBlock=4, the UE 115-a may report feedback for the transport block 210-a based on four CBGs (e.g., each CBG includes one code block 225), and may report feedback for the transport block 210-b based on four CBGs 220. In such an example (e.g., where the transport block 210-a includes four code blocks 225), the UE 115-a may generate four HARQ feedback bits for the four CBGs 220 corresponding to the first transport block 210-a (e.g., each CBG 220 corresponds to a single code block 225).

[0114] As described herein, a threshold number of CBGs per transport block (e.g., maxCodeBlockGroupsPerTransportBlock) may be configured at UE 115-a via higher layer signaling. The value of the threshold number of CBGs may be 2, 4, 6, or 8 for a single transport block 210, or may be 2 or 4 for two transport blocks 210 scheduled during a single PDSCH opportunity (e.g., where a higher layer parameter such as maxNrofCodeWordsSCheduledByDCI is set to 2). As described herein, two transport blocks (e.g., transport block 210-a and transport block 210-b) scheduled for the same PDSCH opportunity may have the same threshold number of CBGs even if they have different numbers of code blocks (e.g., due to different transport block sizes, different MCSs, different numbers of layers, etc.). In such an example, UE 115-a may be configured to use the same number of CBGs to report CBG-based HARQ feedback for both transport blocks 210. UE 115-a may generate four bits of HARQ feedback for transport block 210-a (e.g., four bits for four corresponding CBGs 220, where each CBG 220 includes one of four code blocks 225) and four bits of HARQ feedback for transport block 210-b (e.g., four bits for four corresponding CBGs 220, where each CBG 220 includes four code blocks 225). This scenario may result in a different number of code blocks per CBG for each of the two transport blocks 210.

[0115] In addition, some wireless communication technologies may not support CBG-based transmission and HARQ-ACK feedback for one transport block 210, and transport block-based transmission and HARQ-ACK feedback for another transport block 210 communicated via the same PDSCH. In some cases, sending feedback using the same granularity (e.g., the same number of CBGs 220 for each transport block in the transport block 210) may result in unnecessary overhead, unnecessary retransmissions, inefficient use of computing resources and system resources, and increased system latency. For example, if the UE 115-a is configured to send CBG-based feedback based on the received CBG 220 included in the transport block 210-b, the UE 115-a may also send CBG-based feedback for a smaller number of code blocks 225 for four transport blocks 210-a. This may result in high granularity of feedback for the transport block 210-a (e.g., which may have a smaller size, a smaller number of layers, or a smaller MCS), which may result in increased signaling overhead for feedback transmission. Additionally or alternatively, UE 115-a may not support different granularities of feedback signaling for different transport blocks 210, which may result in unnecessary signaling overhead, less efficient use of computing resources, increased system latency, and a reduced user experience.

[0116] The techniques described herein may support increased flexibility in granularity of HARQ feedback for transport blocks 210 with different parameter values ​​(e.g., with different sizes, MCSs, number of layers, etc.). The network entity 105-a may send a grant 205 in a PDSCH opportunity of a component carrier, the grant including resources for scheduling transport block 210-a and transport block 210-b. Transport block 210-a may be smaller than transport block 210-b or may have a lower MCS or fewer layers. In a feedback message 215, UE 115-a may provide transport block level feedback for transport block 210-a and CBG level feedback for transport block 210-b. Thus, the UE 115-a may not expend computational resources in generating HARQ feedback for individual code blocks 225 of the transport block 210-a, and may save signaling overhead by generating transport block-based HARQ feedback for the transport block 210-a, while maintaining the benefits of increased granularity and reduced signaling overhead for retransmissions associated with CBG-based HARQ feedback for the largest transport block 210-b. Additionally or alternatively, as described herein, the UE 115-a and the network entity 105-a may support CBG-based HARQ feedback and retransmissions for two transport blocks, wherein the HARQ feedback and retransmissions correspond to a different number of CBGs for each respective transport block 210 (e.g., rather than the same number of CBGs per transport block).

[0117] The techniques described herein may be applied when the transport blocks 210 have different parameters (e.g., different sizes, different MCSs, different numbers of layers, etc.). In some examples, the techniques described herein may support rate split MIMO signaling. For example, for each UE 115 of a plurality of co-scheduled UEs 115 (e.g., including UE 115-a), the network may provide (e.g., via network entity 105-a) a common transport block (e.g., transport block 210-a) and a private transport block (e.g., transport block 210-b). The common transport blocks and / or private transport blocks may be mapped to different sets of layers of the PDSCH. For example, the network entity 105-a may send a common transport block 210-a (e.g., broadcast or multicast to a group of UEs 115 including UE 115-a) and may send a private transport block 210-b directly to UE 115-a. The group of UEs 115 may decode the common transport block 210-a (e.g., which may have a smaller MCS and rank), while the private transport block 210-b may be decoded by the UE 115-a to which it is addressed (e.g., and therefore may have a larger MCS and rank if UE 115-a is the cell center). In such examples, the transport block 210-a and the transport block 210-b may have different sizes, MCSs, ranks, or a combination thereof, and the techniques described herein may support more flexible and efficient HARQ feedback signaling.

[0118] UE 115-a may be configured to provide transport block-based HARQ-ACK feedback for a first transport block 210-a and CBG-based HARQ-ACK feedback for a second transport block 210-b. For example, UE 115-a may be scheduled (e.g., via grant 205) with two transport blocks 210 (e.g., in a PDSCH opportunity of a component carrier). UE 115-a may receive an RRC message that configures UE 115-a to provide transport block level feedback for transport block 210-a and CBG level feedback for transport block 210-b. The RRC message may configure different levels of feedback per component carrier or frequency resource set (e.g., per frequency band, per bandwidth portion, etc.). In such an example, the UE 115-a may provide one bit of feedback for the first transport block 210-a (e.g., one HARQ bit for transport block 210-a) and may provide a certain number of feedback bits (e.g., N) for up to N CBGs 220 for the second transport block 210-b. In some examples, N may be defined by a threshold number of CBGs configured via RRC signaling (e.g., RRC parameter maxCodeBlockGroupsPerTransportBlock). Additionally, the CBGTI field of the DCI that schedules the PDSCH transmission of the transport block 210 may indicate which CBGs 220 of the transport block 210-b are present in the transmission. Accordingly, the network entity 105-a may indicate scheduling information for retransmissions of CBGs 220-a, 220-b, 220-c and / or 220-d to the UE 115-a based on the CBGTI field of the DCI.

[0119] UE 115-a may determine which of the two scheduled transport blocks 210 corresponds to transport block level feedback and which transport block 210 corresponds to CBG level feedback. UE 115-a may make such a determination based on comparing one or more parameters of the corresponding transport blocks 210 (e.g., the type of transport block, the size of the transport block, the number of code blocks in each transport block, the MCS, rank, ordering of each transport block, or any combination thereof). For example, UE 115-a may determine that if transport block 210-a is a public transport block (e.g., if multiple UEs 115 attempt to decode transport block 210-a) and transport block 210-b is a private transport block (e.g., if only UE 115-a can decode transport block 210-b), then transport block 210-a corresponds to transport block level feedback and transport block 210-b corresponds to CBG level feedback. Additionally or alternatively, UE 115-a may determine that if transport block 210-a is smaller than transport block 210-b, then transport block 210-a corresponds to transport block level feedback, and transport block 210-b corresponds to CBG level feedback. Additionally or alternatively, UE 115-a may determine that if transport block 210-a includes a smaller number of code blocks than transport block 210-b, then transport block 210-a corresponds to transport block level feedback, and transport block 210-b corresponds to CBG level feedback. Additionally or alternatively, UE 115-a may determine that if transport block 210-a has a smaller MCS than transport block 210-b, then transport block 210-a corresponds to transport block level feedback, and transport block 210-b corresponds to CBG level feedback. Additionally or alternatively, UE 115-a may determine that if transport block 210-a has a smaller transmission rank than transport block 210-b, then transport block 210-a corresponds to transport block level feedback and transport block 210-b corresponds to CBG level feedback. Additionally or alternatively, UE 115-a may determine that if transport block 210-a is associated with a DCI field (e.g., MCS / NDI / RV field of the DCI) that is earlier in time than transport block 210-b, then transport block 210-a corresponds to transport block level feedback and transport block 210-b corresponds to CBG level feedback.

[0120] The techniques described herein may support various types of feedback signaling, including a type 2 HARQ-ACK codebook. In some examples, such as reference Figure 3 In more detail, the transport block level feedback for the first transport block 210-a may be included in a transport block based sub-codebook, and the CBG level feedback for the second transport block 210-b may be included in a CBG based sub-codebook. Figure 4Described in more detail, feedback for both transport block 210-a and transport block 210-b may be included in a CBG-based subcodebook, where each DAI position in the CBG-based subcodebook for the component carrier corresponds to a number of bits equal to N+1, where N is a threshold number of CBGs configured for the component carrier.

[0121] In some examples, UE 115-a may use a type 1 HARQ-ACK codebook. For example, UE 115-a may generate feedback message 215 using a semi-static HARQ-ACK codebook based on possible PDSCH reception opportunities. For example, if UE 115-a uses a type 1 HARQ-ACK codebook and is configured with N CBGs 210 per transport block, each PDSCH reception opportunity may correspond to N 2 bits in the HARQ-ACK codebook. That is, for PDSCH reception including transport block 210-a and transport block 210-b, transport block-level feedback for transport block 210-a may be repeated N times in the HARQ-ACK codebook. Therefore, for a PDSCH scheduled by a DCI format that does not support CBG-based PDSCH repetition, and if the component carrier is an RRC configured with CBG-based PDSCH, feedback for transport block 210 may still be repeated N times. If UE 115 does not receive DCI for the type 1 HARQ-ACK codebook, UE 115-a may not experience a codebook size mismatch.

[0122] In some examples, if UE 115-a supports transport block level feedback for transport block 210-a and CBG level feedback for transport block 210-b, and if UE 115-a is configured with N CBGs for transport block 210-b, UE 115 may use a type 1 HARQ-ACK codebook where each PDSCH reception opportunity corresponds to N+1 bits in the HARQ-ACK codebook. For example, UE 115-a may map feedback for transport block 210-a to the first or last bit for a PDSCH opportunity, and UE 115-a may map feedback for transport block 210-b to the remaining N bits for a PDSCH opportunity. In some cases, if the DCI schedules one transport block with CBG level feedback for a PDSCH opportunity (e.g., instead of two transport blocks), N of the N+1 bits may correspond to N CBGs for a single transport block. In such cases, UE 115-a may set the last bit to NACK, or UE 115-a may set the last bit to the decoding result of one transport block (e.g., to 1 if all CBGs are successfully decoded, otherwise to 0). In some cases, if the DCI schedules one transport block 210 with transport block level feedback for different PDSCH opportunities, 1 bit may be repeated N+1 times in the HARQ-ACK codebook.

[0123] In some examples, UE 115-a may generate feedback message 215 using a type 3 HARQ-ACK codebook (e.g., a codebook construction based on a set of HARQ process identifiers (IDs)). For example, if UE 115-a uses a type 3 HARQ-ACK codebook and is configured with N CBGs per transport block, each HARQ process ID may correspond to N+1 bits in the HARQ-ACK codebook (e.g., N bits for the N CBGs of the second transport block 210-b and 1 bit for the first transport block). Feedback for the first transport block 210-a may be mapped to the first or last bit of the N+1 bits for the HARQ process ID.

[0124] In some cases, the techniques described herein may support CBG-level HARQ-ACK feedback for multiple transport blocks 210 having different threshold numbers of CBGs, resulting in HARQ-ACK feedback for different transport blocks 210, the different transport blocks including a first number of bits for a first transport block 210-a and a second number of bits for a second transport block 210-b. In such cases, by configuring the UE 115-a to send CBG-level feedback for the transport block 210 in a feedback message 215 with a configurable number of feedback bits, the signaling of the transport block 210 enabled for CBG transmission, corresponding CBG-level HARQ feedback, and CBG retransmission corresponding to the corresponding CBG-level HARQ feedback may be enhanced to improve resource efficiency. In such aspects, the UE 115-a may send a first number of feedback bits (e.g., N1 bits) for the transport block 210-a and a second number of feedback bits (e.g., N2 bits) for the transport block 210-b, wherein the second number of feedback bits is greater than the first number of feedback bits (e.g., N2>N1). The values ​​of N1 and N2 may be RRC configured (eg, per component carrier, per BWP, etc.) In some examples, the DCI may dynamically schedule one transport block or two transport blocks and may indicate the values ​​of N1 and N2.

[0125] UE 115-a may provide feedback of N1 bits for up to N1 CBGs for the first transport block 210-a and may provide feedback of N2 bits for up to N2 CBGs for the second transport block 210-b. In some examples, the CBGTI field of the DCI scheduled for PDSCH transmission (e.g., for scheduling retransmissions) may include a number of bits equal to N1+N2.

[0126] UE 115-a may determine which of the two scheduled transport blocks 210 corresponds to N1 and which transport block 210 corresponds to N2. UE 115-a may make such a determination based on comparing one or more parameters of the corresponding transport blocks 210 (e.g., the type of transport block, the size of the transport block, the number of code blocks in each transport block, the MCS, rank, ordering of each transport block, or any combination thereof). For example, UE 115-a may determine that if transport block 210-a is a public transport block (e.g., if multiple UEs 115 attempt to decode transport block 210-a) and transport block 210-b is a private transport block (e.g., if only UE 115-a can decode transport block 210-b), then transport block 210-a corresponds to N1 and transport block 210-b corresponds to N2. Additionally or alternatively, UE 115-a may determine that if transport block 210-a is smaller than transport block 210-b, then transport block 210-a corresponds to N1, and transport block 210-b corresponds to N2. Additionally or alternatively, UE 115-a may determine that if transport block 210-a includes a smaller number of code blocks than transport block 210-b, then transport block 210-a corresponds to N1, and transport block 210-b corresponds to N2. Additionally or alternatively, UE 115-a may determine that if transport block 210-a has a smaller MCS than transport block 210-b, then transport block 210-a corresponds to N1, and transport block 210-b corresponds to N2. Additionally or alternatively, UE 115-a may determine that if transport block 210-a has a smaller transmission rank than transport block 210-b, then transport block 210-a corresponds to N1, and transport block 210-b corresponds to N2. Additionally or alternatively, UE 115-a may determine that if transport block 210-a is associated with a DCI field (e.g., the MCS / NDI / RV field of the DCI) that is earlier in time than transport block 210-b, then transport block 210-a corresponds to N1 and transport block 210-b corresponds to N2.

[0127] In some examples, the network entity 105-a may schedule only one transport block 210 for a PDSCH opportunity. In such examples, the UE 115-a may determine a threshold number of CBGs for a single transport block 210 based on N1 and N2. For example, the UE 115-a may determine that the threshold number of CBGs for the transport block 210 is equal to N1+N2 (e.g., which may be supported by a DCI that includes N1+N2 bits), and the HARQ-ACK codebook may include N1+N2 bits for each PDSCH opportunity. In some examples, the UE 115-a may determine that the threshold number of CBGs for the transport block 210 is equal to the larger of N1 and N2 (e.g., based on the assumption that the threshold number of CBGs per transport block 210 is not a function of whether a single transport block 210 is scheduled).

[0128] UE 115-a configured with N1 and N2 may support various types of HARQ-ACK codebooks. For example, UE 115-a may support type 2 HARQ-ACK codebooks. In such examples, UE 115-a may provide feedback for both transport block 210-a and transport block 210-b in a CBG-based sub-codebook (e.g., as described in reference to FIG. 1 ). Figure 4 In such examples, each DAI position in the CBG-based subcodebook for a given component carrier may correspond to the N1+N2 bits of the CBG for the first transport block 210-a and the second transport block 210-b.

[0129] UE 115-a supports type 1 HARQ-ACK codebook. In such examples (e.g., where UE 115-a is configured with N1 and N2), each PDSCH reception opportunity may correspond to 2 maximum (N1, N2) bits in the HARQ-ACK codebook. When the PDSCH opportunity includes two transport blocks 210, the last bit (e.g., the last N2-N1 bit) of the N2 bits corresponding to the first transport block 210-a (e.g., where the highest threshold number of CBGs is N1) may be set to NACK. In some examples (e.g., in a type 1 HARQ_ACK codebook), each PDSCH reception opportunity may correspond to N1+N2 bits in the HARQ-ACK codebook.

[0130] UE 115-a supports Type 3 HARQ-ACK codebook. In such an example (e.g., where UE 115-a is configured with N1 and N2), for each HARQ process ID, UE 115-a may place N1+N2 bits in the codebook.

[0131] UE 115-a may be configured to send a maximum number of feedback bits for transport block 210-a that is different from a maximum number of feedback bits for transport block 210-b. For example, UE 115-a may receive a maximum number of N1 CBGs on transport block 210-a, and UE 115-a may receive a maximum number of N2 CBGs on transport block 210-a, where N2 is a value different from or the same as N1. The RRC configuration may configure the values ​​of N1 and N2 per component carrier or per BWP. In some examples, N2 may be greater than N1. For example, UE 115-a may be configured by RRC to receive a maximum number of 1 CBG (e.g., N1=1) on transport block 210-a, and UE 115-a may also be configured by RRC to receive a maximum number of 4 CBGs (e.g., N2=4) on transport block 210-b. Accordingly, UE 115-a may receive code block 225 in 1CBG in transport block 210-a, and UE 115-a may receive CBG 220-a, CBG 220-b, CBG 220-c, and CBG 220-d on transport block 210-b.

[0132] Figure 3 An example of a mapping scheme 300 supporting CBG-based transmission for a multi-codeword channel according to one or more aspects of the present disclosure is illustrated. In some examples, the mapping scheme 300 can be implemented by one or more aspects of the wireless communication system 100. In some examples, the UE 115 can generate a feedback message by mapping feedback bits to a transport block using a DAI set.

[0133] As reference Figure 2 As described, the UE may be configured to support both transport block level feedback and CBG level feedback. For example, the UE may send HARQ feedback according to a type 2 codebook. For example, a network entity may send a grant (e.g., a DCI message) of granted resources for one or more downlink transmissions on a PDSCH (e.g., in one or more PDSCH opportunities 305) on a component carrier. The UE may be configured to report HARQ feedback for each PDSCH opportunity in the PDSCH opportunity 305. The UE may be scheduled to receive a single transport block 310 in some PDSCH opportunities 305 (e.g., PDSCH opportunity 305-b and PDSCH opportunity 305-d), and may also be configured to receive multiple transport blocks 310 in some PDSCH opportunities 305 (e.g., PDSCH opportunity 305-a and PDSCH opportunity 305-c). The UE may also be configured (e.g., via higher layer signaling) with a threshold number of CBGs (e.g., four). The UE may determine (e.g., as referenced Figure 2(described in more detail) the UE will provide transport block level feedback for transport block 310-a, transport block 310-b, transport block 310-c and transport block 310-d, and the UE will provide CBG level feedback for transport block 310-e and transport block 310-f.

[0134] For a given multi-transport block PDSCH opportunity 305, the UE may include transport block level feedback for a first transport block 310 using a transport block based subcodebook 320, and may include CBG level feedback for a second transport block 310 using a CBG based subcodebook 325. For example, for a PDSCH opportunity 305-a, the UE may generate a bit 330-a of the transport block based subcodebook 320 indicating whether the UE successfully received the transport block 310-a, and may generate a bit 330-e of the CBG based subcodebook 325 indicating whether the UE successfully received four CBGs of the transport block 310-e (e.g., four bits 330-e for four CBGs).

[0135] In some examples, a DCI message for granting resources on a component carrier of a PDSCH may include multiple DAI sets 315. Each DAI of two DAI sets may correspond to a DAI position within a subcodebook. Thus, for a DAI set 315-b for CBG-based feedback, a CBG-based subcodebook 325 may include two DAI positions (e.g., for two PDSCH opportunities 305 including a transport block 310 for transport block-level feedback). For a DAI set 315-a for transport block-level feedback, a transport block-based subcodebook 320 may include four DAI positions (e.g., one for each PDSCH opportunity in a PDSCH opportunity 305 including a transport block 310 for transport block-level feedback). A first DAI set 315-a may include four DAIs (e.g., DAI counters) corresponding to four PDSCH opportunities including a transport block 310 for transport block-level feedback (e.g., transport block 310-a, transport block 310-b, transport block 310-c, and transport block 310-d). Each DAI in the DAI set 315-a can be mapped to a DAI position (e.g., bit 330) in the transport block-based subcodebook 320 (e.g., DAI=1 can be mapped to bit 330-a, DAI=2 can be mapped to bit 330-b, DAI=3 can be mapped to bit 330-c, and DAI 4 can be mapped to bit 330-d). Similarly, the DAIs in the second DAI set 315-b can correspond to DAI positions within the CBG-based subcodebook. DAI=1 (e.g., for a PDSCH opportunity 305-a including a transport block 310-e) can be mapped to bit 330-e of the CBG-based subcodebook 325, and DAI=2 (e.g., for a PDSCH opportunity 305-c including a transport block 310-f) can be mapped to bit 330-f of the CBG-based subcodebook 325.

[0136] Figure 4 An example of a mapping scheme 400 supporting CBG-based transmission for a multi-codeword channel according to one or more aspects of the present disclosure is illustrated. In some examples, the mapping scheme 400 can be implemented by one or more aspects of the wireless communication system 100. In some examples, the UE 115 can generate a feedback message by mapping feedback bits to a transport block using a DAI set.

[0137] As reference Figure 2As described, the UE may be configured to support both transport block level feedback and CBG level feedback. For example, the UE may send HARQ feedback according to a type 2 codebook. For example, a network entity may send a grant (e.g., a DCI message) of granted resources for one or more downlink transmissions on a PDSCH (e.g., in one or more PDSCH opportunities 405) on a component carrier. The UE may be configured to report HARQ feedback for each PDSCH opportunity in the PDSCH opportunity 405. The UE may be scheduled to receive a single transport block 410 in some PDSCH opportunities 405 (e.g., PDSCH opportunity 405-b and PDSCH opportunity 405-d), and may also be configured to receive multiple transport blocks 410 in some PDSCH opportunities 405 (e.g., PDSCH opportunity 405-a and PDSCH opportunity 405-c). The UE may also be configured (e.g., via higher layer signaling) with a threshold number of CBGs (e.g., four). The UE may determine (e.g., as referenced Figure 2 (described in more detail) the UE will provide transport block level feedback for transport block 410-a, transport block 410-b, transport block 410-c and transport block 410-d, and the UE will provide CBG level feedback for transport block 410-e and transport block 410-f.

[0138] For a given multi-transport block PDSCH opportunity 405 including two transport blocks 410, the UE may include transport block level feedback for the first transport block 410 and CBG level feedback for the second transport block 410 in the CBG-based subcodebook 435. In such an example, each DAI position in the CBG-based subcodebook 435 may correspond to N+1 bits (e.g., where N is a threshold number of CBGs configured for the component carrier, such as N=4). In such an example, for each DAI position in the CBG-based subcodebook 435, N bits (e.g., bit 425-d) may be allocated for CBG-based feedback for the transport block 410, and one additional bit (e.g., bit 425-c) may be allocated for transport block-based feedback for the transport block 410. The one additional bit may be the first or last bit of the N+1 bits in each DAI position. For example, for PDSCH opportunity 405-a, the UE may generate bits 425-c corresponding to transport block level feedback for transport block 410-a, and may further generate bits 425-d corresponding to CBG level feedback for transport block 410-e (e.g., four bits, one for each of four CBGs).

[0139] The UE may map the feedback bits 425 to the transport block 410 according to a single DAI set 415 (e.g., the DCI granting resources for the PDSCH opportunity 405 may indicate a single set of counter DAIs, rather than separate counter DAIs). That is, the UE may use a single DAI set 415 to map the feedback bits 425 in both the TB-based subcodebook 430 and the CG-based subcodebook 435. For example, the UE may generate a single feedback bit 425-a corresponding to the transport block 410-b in the PDSCH opportunity 405-b in the first DAI position of the transport block-based subcodebook 430 (e.g., DAI=1 may be mapped to bit 425-a for the PDSCH opportunity 405-b), and may generate a second feedback bit 425-b corresponding to the transport block 410-d in the PDSCH opportunity 405-d in the second DAI position of the transport block-based subcodebook 430 (e.g., DAI=2 may be mapped to bit 425-b for the PDSCH opportunity 405-d). Similarly, the UE may generate a bit set 420-a corresponding to the PDSCH opportunity 405-a in the first DAI position of the CBG-based subcodebook 435 (e.g., including bit 425-c for transport block 410-a and bit 425-d for transport block 410-e) (e.g., DAI=1 is also mapped to the bit set 420-a for the PDSCH opportunity 405-a), and may generate a bit set 420-b corresponding to the PDSCH opportunity 405-c in the second DAI position of the CBG-based subcodebook 435 (e.g., including bit 425-e for transport block 410-c and bit 425-f for transport block 410-f) (e.g., DAI=2 is also mapped to the bit set 420-b for the PDSCH opportunity 405-c).

[0140] In some examples, the UE may be scheduled to perform downlink reception on multiple component carriers. The first component carrier may be configured for transport block level feedback and CBG level feedback, while other component carriers may not be configured. In such examples, for the CBG-based subcodebook 435, the threshold number of CBGs may correspond to the threshold number of component carrier sets across which CBG-based transmission and feedback signaling are configured. In such examples, the threshold number of CBGs for each component carrier may be determined based on one or more parameters. For example, if the component carrier is configured with a communication mode (e.g., supporting CBG-based feedback and transport block-based feedback), the threshold number of CBGs may be interpreted as N+1. If the component carrier is configured with a transport block 410 with a threshold number of two scheduled by DCI, but is not configured with a communication mode that supports both transport block level feedback and CBG level feedback (e.g., CBG-based feedback for two transport blocks 410), the threshold number of CBGs may be interpreted as 2N. If the component carrier is not configured with a threshold number of two transport blocks 410 scheduled by the DCI, the threshold number of CBGs may be interpreted as N. N may be configured separately per component carrier, and the UE may interpret N according to the per-component carrier configuration (e.g., for a component carrier configured with CBG-based transmissions).

[0141] Figure 5 An example of a process flow 500 for supporting CBG-based transmission for a multi-codeword channel according to one or more aspects of the present disclosure is illustrated. The process flow 500 may be performed by referring to Figure 1 The wireless communication system 100 and / or the reference Figure 2 The wireless communication system 200 described above can be implemented in various aspects. For example, the UE 115-b can be as shown in FIG. Figure 1 The UE115 and the reference Figure 2 The example of UE 115-a and network entity 105-b may be as shown in reference Figure 1 The network entity 105 and the reference Figure 2 An example of a network entity 105-a is described. The following alternative examples may be implemented in which some of the steps are performed in a different order than described or not performed at all. In some cases, the steps may include additional features not mentioned below, or additional steps may be added.

[0142] At 505, the network entity 105-b may send control signaling including an indication of transport block level feedback and code block group level feedback, and the UE 115-b may receive the control signaling, the transport block level feedback including a first number of feedback bits for a first transport block, the code block group level feedback including a second number of feedback bits for a second transport block. The first number of feedback bits may include one feedback bit, and the second number of feedback bits may include more than one feedback bit associated with a threshold number of CBGs.

[0143] Additionally or alternatively, the control signaling received by UE 115-b may include an indication of a first number of feedback bits (e.g., N1) for a first transmission block and a second number of feedback bits (e.g., N2) for a second transmission block, wherein the second number of feedback bits is greater than the second number of feedback bits.

[0144] At 510, network entity 105-b may send a resource grant (e.g., a DCI message) scheduling the first transport block and the second transport block during a reception opportunity on the component carrier, and UE 115-b may receive the resource grant during the reception opportunity. In some examples, the resource grant may include a first set of DAIs associated with the first subcodebook and a second set of DAIs associated with the second subcodebook. In such examples, generating a first portion of the feedback message may be based on the first set of DAIs, and generating a second portion of the feedback message may be based on the second set of DAIs.

[0145] In some examples, the resource grant may include a set of DAIs for a first subcodebook and a second codebook with transport block level feedback. In some aspects, each DAI position associated with a corresponding DAI in the set of DAIs may be associated with a number of feedback bits, the number of feedback bits being greater than or equal to the sum of the first number of feedback bits and the second number of feedback bits. In some aspects, each DAI position associated with a corresponding DAI in the set of DAIs may be associated with a number of feedback bits, the number of feedback bits being based on a threshold number of feedback bits supported on a plurality of component carriers including a component carrier associated with the transport block.

[0146] In some examples, a resource grant may include a set of DAIs for a sub-codebook with CBG-level feedback, wherein each DAI associated with a corresponding DAI in the set of DAIs may be associated with a number of feedback bits that is equal to the sum of a first number of feedback bits and a second number of feedback bits.

[0147] At 515 , the network entity 105 - b may send the first transport block and the second transport block during the reception opportunity, and the UE 115 - b may receive the first transport block and the second transport block during the reception opportunity.

[0148] At 520, UE 115-b may map the feedback bits to the respective transport blocks. For example, UE 115-b may map a first number of feedback bits to the first transport block and a second number of feedback bits to the second transport block based on a comparison between a first value of one or more parameters of the first transport block and a second value of one or more parameters of the second transport block. The one or more parameters may include a transport block size, a number of codebooks, an MCS, a transmission rank, and an order of identifiers in a resource grant, or a combination thereof.

[0149] Additionally or alternatively, UE 115-b may map a first number of feedback bits to the first transport block and a second number of feedback bits to the second transport block based on a comparison between values ​​of one or more parameters of the first transport block and corresponding values ​​of one or more parameters of the second transport block. The one or more parameters may include a transport block size, a number of codebooks, an MCS, a transmit rank, an order of identifiers in a resource grant, or a combination thereof.

[0150] At 525, UE 115-b may generate a feedback message. For example, UE 115-b may generate a first portion of the feedback message based on a first subcodebook associated with transport block level feedback, such that the first portion includes one feedback bit associated with the first transport block. Additionally or alternatively, UE 115-b may generate a second portion of the feedback message based on a second subcodebook associated with CBG level feedback, such that the second portion includes a second number of feedback bits associated with the second transport block.

[0151] Additionally or alternatively, UE 115-b may generate a first portion of the feedback message based on a first subcodebook having CBG level feedback such that the first portion includes one feedback bit associated with the first transmission block and a second number of feedback bits associated with the second transmission block.

[0152] In some examples, UE 115-b may generate a feedback message based on a feedback codebook that includes a total number of feedback bits corresponding to multiple reception opportunities on the component carrier. In some aspects, each of the multiple reception opportunities corresponding to a subset of the total number of feedback bits may be equal to the product of two and a threshold number of CBGs. In other aspects, each of the multiple reception opportunities corresponding to a subset of the total number of feedback bits may be equal to the sum of the first number of feedback bits and the second number of feedback bits.

[0153] In some examples, UE 115-b may generate a feedback message based on a feedback codebook that includes a total number of feedback bits corresponding to a plurality of feedback process identifiers. Each feedback process identifier in the plurality of feedback process identifiers may correspond to a subset of the total number of feedback bits that is equal to a sum of a first number of feedback bits and a second number of feedback bits.

[0154] In some examples, UE 115-b may generate a first portion of a feedback message based on a subcodebook with CBG level feedback, the first portion comprising a first number of feedback bits associated with a first transport block and a second number of feedback bits associated with a second transport block.

[0155] At 530, UE 115-b may send a feedback message associated with HARQ feedback and including a first number of feedback bits for a first transport block and a second number of feedback bits for a second transport block, wherein the first number of feedback bits is different from the second number of feedback bits.

[0156] Figure 6 A block diagram 600 of a device 605 supporting CBG-based transmission for a multi-codeword channel according to one or more aspects of the present disclosure is shown. The device 605 may be an example of aspects of a UE 115 as described herein. The device 605 may include a receiver 610, a transmitter 615, and a communication manager 620. The device 605 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0157] 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., control channels, data channels, information channels related to CBG-based transmissions for multi-codeword channels). The information may be communicated to other components of the device 605. The receiver 610 may utilize a single antenna or a set of multiple antennas.

[0158] 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 associated with various information channels (e.g., control channels, data channels, information channels related to CBG-based transmission for multi-codeword channels), such as packets, user data, control information, or any combination thereof. 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 set of multiple antennas.

[0159] 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 CBG-based transmission for multi-codeword channels 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.

[0160] 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 components, discrete hardware components, or any combination thereof that is configured as or otherwise supports means for performing the functions described in the present disclosure. In some examples, the 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).

[0161] Additionally or alternatively, in some examples, the communication manager 620, the receiver 610, the 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, the receiver 610, the transmitter 615, or various combinations or components thereof may be performed by a general purpose processor, a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting means for performing the functionality described in the present disclosure).

[0162] In some examples, communication manager 620 can be configured to perform various operations (e.g., receive, obtain, monitor, output, send) 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 in conjunction with receiver 610, transmitter 615, or both to obtain information, output information, or perform various other operations as described herein.

[0163] According to examples as disclosed herein, the communication manager 620 may support wireless communications at a UE. For example, the communication manager 620 may be configured to or otherwise support a component for receiving a resource grant that schedules a first transport block and a second transport block during a receive opportunity on a component carrier. The communication manager 620 may be configured to or otherwise support a component for receiving a first transport block and a second transport block during a receive opportunity. The communication manager 620 may be configured to or otherwise support a component for sending a feedback message associated with a hybrid automatic repeat request feedback and including a first number of feedback bits for a first transport block and a second number of feedback bits for a second transport block, wherein the first number of feedback bits is different from the second number of feedback bits.

[0164] By including or configuring the communication manager 620 according to the examples described herein, the device 605 (e.g., a processor controlling or otherwise coupled to the receiver 610, the transmitter 615, the communication manager 620, or a combination thereof) can support enhanced feedback for a PDSCH including multiple transport blocks to support techniques for more efficient use of communication resources, increased data rates, and increased spectral efficiency. For example, the device 605 can support sending feedback on the PDSCH with variable granularity corresponding to each transport block, rather than sending feedback for a transport block using the same granularity. By allowing granularity corresponding to each transport block, the device 605 can prevent unnecessary overhead and unnecessary retransmissions, thereby improving resource utilization efficiency, reducing latency, and increasing data rates.

[0165] Figure 7 A block diagram 700 of a device 705 supporting CBG-based transmission for a multi-codeword channel according to one or more aspects of the present disclosure is shown. The device 705 may be an example of aspects of the device 605 or UE 115 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).

[0166] 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., control channels, data channels, information channels related to CBG-based transmissions for multi-codeword channels). The information may be communicated to other components of the device 705. The receiver 710 may utilize a single antenna or a set of multiple antennas.

[0167] 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 associated with various information channels (e.g., control channels, data channels, information channels related to CBG-based transmissions for multi-codeword channels), such as packets, user data, control information, or any combination thereof. 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 set of multiple antennas.

[0168] The device 705 or its various components may be examples of components for performing various aspects of CBG-based transmission for multi-codeword channels as described herein. For example, the communication manager 720 may include a resource grant component 725, a transmission block component 730, a feedback message component 735, or any combination thereof. The communication manager 720 may be an example of various aspects of the communication manager 620 as described herein. In some examples, the communication manager 720 or its various components may be configured to perform various operations (e.g., receive, obtain, monitor, output, send) using the receiver 710, the transmitter 715, or both or otherwise collaborate with them. For example, the communication manager 720 may receive information from the receiver 710, transmit information to the transmitter 715, or be integrated with the receiver 710, the transmitter 715, or both to obtain information, output information, or perform various other operations as described herein.

[0169] According to examples as disclosed herein, the communication manager 720 may support wireless communications at the UE. The resource grant component 725 may be configured to or otherwise support means for receiving a resource grant that schedules a first transport block and a second transport block during a receive opportunity on a component carrier. The transport block component 730 may be configured to or otherwise support means for receiving a first transport block and a second transport block during a receive opportunity. The feedback message component 735 may be configured to or otherwise support means for sending a feedback message associated with a hybrid automatic repeat request feedback and including a first number of feedback bits for the first transport block and a second number of feedback bits for the second transport block, wherein the first number of feedback bits is different from the second number of feedback bits.

[0170] Figure 8 A block diagram 800 of a communication manager 820 supporting CBG-based transmission for a multi-codeword channel according to one or more aspects of the present disclosure is shown. 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 CBG-based transmission for a multi-codeword channel as described herein. For example, the communication manager 820 may include a resource grant component 825, a transport block component 830, a feedback message component 835, a feedback control signaling component 840, a mapping component 845, or any combination thereof. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).

[0171] According to examples as disclosed herein, the communication manager 820 may support wireless communications at the UE. The resource grant component 825 may be configured to or otherwise support means for receiving a resource grant that schedules a first transport block and a second transport block during a receive opportunity on a component carrier. The transport block component 830 may be configured to or otherwise support means for receiving a first transport block and a second transport block during a receive opportunity. The feedback message component 835 may be configured to or otherwise support means for sending a feedback message associated with a hybrid automatic repeat request feedback and including a first number of feedback bits for the first transport block and a second number of feedback bits for the second transport block, wherein the first number of feedback bits is different from the second number of feedback bits.

[0172] In some examples, the feedback control signaling component 840 may be configured to or otherwise support a component for receiving control signaling, the control signaling including an indication of transport block level feedback and CBG level feedback, the transport block level feedback including the first number of feedback bits for the first transport block, the CBG level feedback including the second number of feedback bits for the second transport block, the first number of feedback bits including one feedback bit, and the second number of feedback bits including more than one feedback bit associated with a threshold number of CBGs.

[0173] In some examples, the mapping component 845 may be configured to or otherwise support components for mapping the first number of feedback bits to the first transport block and mapping the second number of feedback bits to the second transport block based on a comparison between a first value of one or more parameters of the first transport block and a second value of the one or more parameters of the second transport block, the one or more parameters including a transport block size, a number of codebooks, a modulation and coding scheme, a transmission rank, an order of identifiers in the resource grant, or a combination thereof.

[0174] In some examples, the feedback message component 835 can be configured to or otherwise support a means for generating a first portion of the feedback message according to a first subcodebook associated with the transport block level feedback, the first portion including the one feedback bit associated with the first transport block. In some examples, the feedback message component 835 can be configured to or otherwise support a means for generating a second portion of the feedback message according to a second subcodebook associated with the CBG level feedback, the second portion including the second number of feedback bits associated with the second transport block.

[0175] In some examples, the resource grant component 825 may be configured to or otherwise support means for receiving, in the resource grant, a first set of downlink assignment indexes associated with the first sub-codebook and a second set of downlink assignment indexes associated with the second sub-codebook, wherein generating the first portion of the feedback message is based on the first set of downlink assignment indexes, and generating the second portion of the feedback message is based on the second set of downlink assignment indexes.

[0176] In some examples, the feedback message component 835 may be configured to or otherwise support components for generating a first portion of the feedback message based on a first subcodebook with CBG level feedback, the first portion comprising the one feedback bit associated with the first transmission block and the second number of feedback bits associated with the second transmission block.

[0177] In some examples, the resource grant component 825 may be configured to or otherwise support means for receiving, in the resource grant, a set of downlink assignment indexes for the first subcodebook and the second subcodebook with transport block level feedback, wherein each downlink assignment index position associated with a corresponding downlink assignment index in the set of downlink assignment indexes is associated with a number of feedback bits, the number of feedback bits being greater than or equal to a sum of the first number of feedback bits and the second number of feedback bits.

[0178] In some examples, each downlink assignment index position associated with a corresponding downlink assignment index in the set of downlink assignment indices is associated with the number of feedback bits, the number of feedback bits being based on a threshold number of feedback bits supported on a set of multiple component carriers including the component carrier.

[0179] In some examples, feedback message component 835 may be configured or otherwise support means for generating the feedback message according to a feedback codebook, the feedback message including a total number of feedback bits corresponding to a set of multiple reception opportunities on the component carrier.

[0180] In some examples, each reception opportunity in the set of multiple reception opportunities corresponds to a subset of the total number of feedback bits, the subset being equal to the product of two and a threshold number of CBGs.

[0181] In some examples, each reception opportunity in the set of multiple reception opportunities corresponds to a subset of the total number of feedback bits, the subset being equal to the sum of the first number of feedback bits and the second number of feedback bits.

[0182] In some examples, the feedback message component 835 can be configured to or otherwise support components for generating the feedback message based on the feedback codebook, the feedback message including a total number of feedback bits corresponding to a set of multiple feedback process identifiers, wherein each feedback process identifier in the set of multiple feedback process identifiers corresponds to a subset of the total number of feedback bits, the subset being equal to the sum of the first number of feedback bits and the second number of feedback bits.

[0183] In some examples, the feedback control signaling component 840 may be configured to or otherwise support a component for receiving control signaling that includes an indication of the first number of feedback bits for the first transmission block and the second number of feedback bits for the second transmission block, wherein the second number of feedback bits is greater than the second number of feedback bits.

[0184] In some examples, the mapping component 845 may be configured to or otherwise support components for mapping the first number of feedback bits to the first transport block and mapping the second number of feedback bits to the second transport block based on a comparison between values ​​of one or more parameters of the first transport block and corresponding values ​​of the one or more parameters of the second transport block, the one or more parameters including a transport block size, a number of codebooks, a modulation and decoding scheme, a transmission rank, an order of identifiers in the resource grant, or a combination thereof.

[0185] In some examples, the feedback message component 835 may be configured to or otherwise support components for generating a first portion of the feedback message based on a subcodebook with CBG level feedback, the first portion comprising a first number of feedback bits associated with the first transport block and a second number of feedback bits associated with the second transport block.

[0186] In some examples, the resource grant component 825 may be configured to or otherwise support means for receiving, in the resource grant, a set of downlink assignment indexes for the subcodebook, wherein each downlink assignment index position associated with a corresponding downlink assignment index in the set of downlink assignment indexes is associated with a number of feedback bits, the number of feedback bits being equal to the sum of the first number of feedback bits and the second number of feedback bits.

[0187] Fig. 9A diagram of a system 900 including a device 905 supporting CBG-based transmission for a multi-codeword channel according to one or more aspects of the present disclosure is shown. The device 905 may be an example of a device 605, a device 705, or a UE 115 as described herein, or include components thereof. The device 905 may communicate with one or more network entities 105, one or more UEs 115, or any combination thereof (e.g., wirelessly). The device 905 may include components for two-way voice and data communications, 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, a code 935, and a processor 940. These components may be electronically communicated or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 945).

[0188] I / O controller 910 can manage input and output signals of 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 a computer such as a , or other known operating systems. 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.

[0189] 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. As described herein, the transceiver 915 may communicate bidirectionally via one or more antennas 925, wired or wireless links. 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 to provide the modulated packets to one or more antennas 925 for transmission; and demodulating packets received from one or more antennas 925. The transceiver 915 or the transceiver 915 and one or more antennas 925 may be examples of transmitters 615, transmitters 715, receivers 610, receivers 710, or any combination thereof or components thereof as described herein.

[0190] 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 various functions described herein. The code 935 may be stored in a non-transitory computer-readable medium such as a system memory or another type of memory. In some cases, the code 935 may not be directly executable by the processor 940, but may (e.g., when compiled and executed) cause the computer to perform the functions described herein. In some cases, the memory 930 may include a basic I / O system (BIOS), etc., which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0191] 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 enable the device 905 to perform various functions (e.g., various functions or tasks supporting CBG-based transmission for multi-codeword channels). 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.

[0192] According to examples as disclosed herein, the communication manager 920 may support wireless communications at a UE. For example, the communication manager 920 may be configured to or otherwise support a component for receiving a resource grant for scheduling a first transport block and a second transport block during a receive opportunity on a component carrier. The communication manager 920 may be configured to or otherwise support a component for receiving a first transport block and a second transport block during a receive opportunity. The communication manager 920 may be configured to or otherwise support a component for sending a feedback message associated with a hybrid automatic repeat request feedback and including a first number of feedback bits for a first transport block and a second number of feedback bits for a second transport block, wherein the first number of feedback bits is different from the second number of feedback bits.

[0193] By including or configuring the communication manager 920 according to the examples described herein, the device 905 may support enhanced feedback for a PDSCH including multiple transport blocks to support techniques for reducing latency, improving user experience associated with reduced processing, more efficiently utilizing communication resources, extending battery life, and improving utilization of processing power. For example, the device 905 may support sending feedback on the PDSCH at a variable granularity corresponding to each transport block, rather than sending feedback for a transport block using the same granularity. By allowing granularity corresponding to each transport block, the device 905 may prevent unnecessary overhead and unnecessary retransmissions, thereby improving resource utilization efficiency. Accordingly, the device 905 may provide reduced communication latency, improved user experience associated with reduced processing, longer battery life, and improved utilization of processing power.

[0194] In some examples, the communication manager 920 may be configured to perform various operations (e.g., receive, monitor, transmit) using or otherwise cooperating with the transceiver 915, one or more antennas 925, or any combination thereof. 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 may be supported or performed by the processor 940, the memory 930, the code 935, or any combination thereof. For example, the code 935 may include instructions that can be executed by the processor 940 to cause the device 905 to perform various aspects of CBG-based transmission for multi-codeword channels as described herein, or the processor 940 and the memory 930 may be otherwise configured to perform or support such operations.

[0195] Fig.10 A block diagram 1000 of a device 1005 supporting CBG-based transmission for a multi-codeword channel according to one or more aspects of the present disclosure is shown. The device 1005 may be an example of aspects of the network entity 105 as described herein. The device 1005 may include a receiver 1010, a transmitter 1015, and a communication manager 1020. The device 1005 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0196] Receiver 1010 may provide means for obtaining (e.g., receiving, determining, identifying) information associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack), such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units). The information may be communicated to other components of device 1005. In some examples, receiver 1010 may support obtaining information by receiving signals via one or more antennas. Additionally or alternatively, receiver 1010 may support obtaining information by receiving signals via one or more wired (e.g., electrical, optical) interfaces, wireless interfaces, or any combination thereof.

[0197] The transmitter 1015 may provide means for outputting (e.g., sending, providing, transmitting, communicating) information generated by other components of the device 1005. For example, the transmitter 1015 may output information associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) (such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units)). In some examples, the transmitter 1015 may support outputting information by sending signals via one or more antennas. Additionally or alternatively, the transmitter 1015 may support outputting information by sending signals via one or more wired (e.g., electrical, optical) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 1015 and the receiver 1010 may be co-located in a transceiver, which may include a modem or be coupled to a modem.

[0198] The communication manager 1020, the receiver 1010, the transmitter 1015, or various combinations thereof, or various components thereof, may be examples of means for performing various aspects of CBG-based transmission for multi-codeword channels as described herein. For example, the communication manager 1020, the receiver 1010, the transmitter 1015, or various combinations thereof, or components thereof, may support methods for performing one or more of the functions described herein.

[0199] In some examples, the communication manager 1020, the receiver 1010, the transmitter 1015, 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 DSP, a CPU, an ASIC, an FPGA or other programmable logic device, a microcontroller, discrete gate or transistor logic components, discrete hardware components, or any combination thereof configured as or otherwise supporting means for performing the functions described in this disclosure. 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).

[0200] Additionally or alternatively, in some examples, the communication manager 1020, the receiver 1010, the transmitter 1015, 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 1020, the receiver 1010, the transmitter 1015, or various combinations or components thereof may be performed by a general purpose processor, a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting means for performing the functionality described in the present disclosure).

[0201] In some examples, communication manager 1020 may be configured to perform various operations (e.g., receive, obtain, monitor, output, send) using or otherwise cooperating with receiver 1010, transmitter 1015, or both. For example, communication manager 1020 may receive information from receiver 1010, transmit information to transmitter 1015, or be integrated in conjunction with receiver 1010, transmitter 1015, or both to obtain information, output information, or perform various other operations as described herein.

[0202] According to examples as disclosed herein, the communication manager 1020 may support wireless communications at a network entity. For example, the communication manager 1020 may be configured to or otherwise support a component for outputting a resource grant that schedules a first transport block and a second transport block during a reception opportunity on a component carrier. The communication manager 1020 may be configured to or otherwise support a component for obtaining a first transport block and a second transport block during a reception opportunity based on receiving the resource grant. The communication manager 1020 may be configured to or otherwise support a component for obtaining a feedback message associated with a hybrid automatic repeat request feedback and including a first number of feedback bits for a first transport block and a second number of feedback bits for a second transport block, wherein the first number of feedback bits is different from the second number of feedback bits.

[0203] By including or configuring the communication manager 1020 according to the examples described herein, the device 1005 (e.g., a processor controlling or otherwise coupled to the receiver 1010, the transmitter 1015, the communication manager 1020, or a combination thereof) can support enhanced feedback for a PDSCH including multiple transport blocks to support techniques for more efficient use of communication resources, increased data rates, and increased spectral efficiency. For example, the device 1005 can support sending feedback on the PDSCH with variable granularity corresponding to each transport block, rather than sending feedback for a transport block using the same granularity. By allowing granularity corresponding to each transport block, the device 1005 can prevent unnecessary overhead and unnecessary retransmissions, thereby improving resource utilization efficiency, reducing latency, and increasing data rates.

[0204] Fig.11 A block diagram 1100 of a device 1105 supporting CBG-based transmission for a multi-codeword channel according to one or more aspects of the present disclosure is shown. The device 1105 may be an example of aspects of the device 1005 or network entity 105 as described herein. The device 1105 may include a receiver 1110, a transmitter 1115, and a communication manager 1120. The device 1105 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0205] Receiver 1110 may provide means for obtaining (e.g., receiving, determining, identifying) information associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack), such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units). The information may be communicated to other components of device 1105. In some examples, receiver 1110 may support obtaining information by receiving signals via one or more antennas. Additionally or alternatively, receiver 1110 may support obtaining information by receiving signals via one or more wired (e.g., electrical, optical) interfaces, wireless interfaces, or any combination thereof.

[0206] The transmitter 1115 may provide means for outputting (e.g., sending, providing, transmitting, communicating) information generated by other components of the device 1105. For example, the transmitter 1115 may output information associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) (such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units)). In some examples, the transmitter 1115 may support outputting information by sending signals via one or more antennas. Additionally or alternatively, the transmitter 1115 may support outputting information by sending signals via one or more wired (e.g., electrical, optical) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 1115 and the receiver 1110 may be co-located in a transceiver, which may include a modem or be coupled to a modem.

[0207] Device 1105 or its various components may be examples of components for performing various aspects of CBG-based transmission for multi-codeword channels as described herein. For example, communication manager 1120 may include resource grant component 1125, transmission block component 1130, feedback message component 1135, or any combination thereof. Communication manager 1120 may be an example of various aspects of communication manager 1020 as described herein. In some examples, communication manager 1120 or its various components may be configured to perform various operations (e.g., receive, obtain, monitor, output, send) using receiver 1110, transmitter 1115, or both or otherwise collaborate with them. For example, communication manager 1120 may receive information from receiver 1110, transmit information to transmitter 1115, or be integrated with receiver 1110, transmitter 1115, or both to obtain information, output information, or perform various other operations as described herein.

[0208] According to examples as disclosed herein, the communication manager 1120 may support wireless communications at a network entity. The resource grant component 1125 may be configured to or otherwise support a means for outputting a resource grant that schedules a first transport block and a second transport block during a receive opportunity on a component carrier. The transport block component 1130 may be configured to or otherwise support a means for obtaining a first transport block and a second transport block during a receive opportunity based on receiving the resource grant. The feedback message component 1135 may be configured to or otherwise support a means for obtaining a feedback message associated with a hybrid automatic repeat request feedback and including a first number of feedback bits for a first transport block and a second number of feedback bits for a second transport block, wherein the first number of feedback bits is different from the second number of feedback bits.

[0209] Fig.12A block diagram 1200 of a communication manager 1220 supporting CBG-based transmission for a multi-codeword channel according to one or more aspects of the present disclosure is shown. The communication manager 1220 may be an example of aspects of the communication manager 1020, the communication manager 1120, or both as described herein. The communication manager 1220 or its various components may be examples of means for performing various aspects of CBG-based transmission for a multi-codeword channel as described herein. For example, the communication manager 1220 may include a resource grant component 1225, a transport block component 1230, a feedback message component 1235, a feedback control signaling component 1240, a feedback decoding component 1245, 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 a protocol stack (e.g., between protocol layers of a protocol stack, within a device, component, or virtualized component associated with a network entity 105, between devices, components, or virtualized components associated with a network entity 105), or any combination thereof.

[0210] According to examples as disclosed herein, the communication manager 1220 may support wireless communications at a network entity. The resource grant component 1225 may be configured to or otherwise support a means for outputting a resource grant that schedules a first transport block and a second transport block during a receive opportunity on a component carrier. The transport block component 1230 may be configured to or otherwise support a means for obtaining a first transport block and a second transport block during a receive opportunity based on receiving the resource grant. The feedback message component 1235 may be configured to or otherwise support a means for obtaining a feedback message associated with a hybrid automatic repeat request feedback and including a first number of feedback bits for a first transport block and a second number of feedback bits for a second transport block, wherein the first number of feedback bits is different from the second number of feedback bits.

[0211] In some examples, feedback control signaling component 1240 may be configured as or otherwise support components for outputting control signaling that includes an indication of transport block level feedback and CBG level feedback, the transport block level feedback including the first number of feedback bits for the first transport block, the CBG level feedback including the second number of feedback bits for the second transport block, the first number of feedback bits including one feedback bit, and the second number of feedback bits including more than one feedback bit associated with a threshold number of CBGs.

[0212] In some examples, the feedback decoding component 1245 can be configured to or otherwise support a means for decoding a first portion of the feedback message according to a first subcodebook associated with the transport block level feedback, the first portion including the one feedback bit associated with the first transport block. In some examples, the feedback decoding component 1245 can be configured to or otherwise support a means for decoding a second portion of the feedback message according to a second subcodebook associated with the CBG level feedback, the second portion including the second number of feedback bits associated with the second transport block.

[0213] In some examples, the resource grant component 1225 may be configured to or otherwise support means for outputting, in the resource grant, a first set of downlink assignment indexes associated with the first sub-codebook and a second set of downlink assignment indexes associated with the second sub-codebook, wherein decoding the first portion of the feedback message is based on the first set of downlink assignment indexes, and decoding the second portion of the feedback message is based on the second set of downlink assignment indexes.

[0214] In some examples, feedback decoding component 1245 may be configured to or otherwise support components for decoding a first portion of the feedback message based on a first subcodebook with CBG level feedback, the first portion comprising the one feedback bit associated with the first transmission block and the second number of feedback bits associated with the second transmission block.

[0215] In some examples, the resource grant component 1225 may be configured to or otherwise support means for outputting, in the resource grant, a set of downlink assignment indexes for the first subcodebook and the second subcodebook with transport block level feedback, wherein each downlink assignment index position associated with a corresponding downlink assignment index in the set of downlink assignment indexes is associated with a number of feedback bits, the number of feedback bits being greater than or equal to a sum of the first number of feedback bits and the second number of feedback bits.

[0216] In some examples, each downlink assignment index position associated with a corresponding downlink assignment index in the set of downlink assignment indices is associated with the number of feedback bits, the number of feedback bits being based on a threshold number of feedback bits supported on a set of multiple component carriers including the component carrier.

[0217] In some examples, the feedback control signaling component 1240 may be configured to or otherwise support components for outputting control signaling that includes an indication of the first number of feedback bits for the first transmission block and the second number of feedback bits for the second transmission block, wherein the second number of feedback bits is greater than the second number of feedback bits.

[0218] In some examples, feedback decoding component 1245 may be configured to or otherwise support components for decoding a first portion of the feedback message based on a subcodebook with CBG level feedback, the first portion comprising a first number of feedback bits associated with the first transport block and a second number of feedback bits associated with the second transport block.

[0219] In some examples, the resource grant component 1225 may be configured to or otherwise support means for outputting, in the resource grant, a set of downlink assignment indexes for the subcodebook, wherein each downlink assignment index position associated with a corresponding downlink assignment index in the set of downlink assignment indexes is associated with a number of feedback bits, the number of feedback bits being equal to the sum of the first number of feedback bits and the second number of feedback bits.

[0220] Fig.13 A diagram of a system 1300 including a device 1305 supporting CBG-based transmission for a multi-codeword channel according to one or more aspects of the present disclosure is shown. The device 1305 may be an example of a device 1005, a device 1105, or a network entity 105 as described herein, or include components thereof. The device 1305 may communicate with one or more network entities 105, one or more UEs 115, or any combination thereof, which communication may include communication through one or more wired interfaces, through one or more wireless interfaces, or any combination thereof. The device 1305 may include components that support output and acquisition of communications, such as a communication manager 1320, a transceiver 1310, an antenna 1315, a memory 1325, a code 1330, and a processor 1335. These components may be electronically communicated or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., bus 1340).

[0221] As described herein, the transceiver 1310 may support bidirectional communication via a wired link, a wireless link, or both. In some examples, the transceiver 1310 may include a wired transceiver and may communicate bidirectionally with another wired transceiver. Additionally or alternatively, in some examples, the transceiver 1310 may include a wireless transceiver and may communicate bidirectionally with another wireless transceiver. In some examples, the device 1305 may include one or more antennas 1315, which may be capable of sending or receiving wireless transmissions (e.g., concurrently). The transceiver 1310 may also include a modem for modulating a signal, providing the modulated signal for transmission (e.g., through one or more antennas 1315, through a wired transmitter), receiving the modulated signal (e.g., from one or more antennas 1315, from a wired receiver), and demodulating the signal. Where applicable, transceiver 1310 or transceiver 1310 and one or more antennas 1315 or wired interfaces may be examples of transmitter 1015, transmitter 1115, receiver 1010, receiver 1110, or any combination thereof or components thereof as described herein. In some examples, the transceiver may be operable to support communication via one or more communication links (e.g., communication link 125, backhaul communication link 120, midhaul communication link 162, fronthaul communication link 168).

[0222] Memory 1325 may include RAM and ROM. Memory 1325 may store computer-readable, computer-executable code 1330 including instructions that, when executed by processor 1335, cause device 1305 to perform various functions described herein. Code 1330 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, code 1330 may not be directly executable by processor 1335, but may (e.g., when compiled and executed) cause a computer to perform the functions described herein. In some cases, memory 1325 may include BIOS, etc., which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0223] Processor 1335 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, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, processor 1335 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into processor 1335. Processor 1335 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1325) to enable device 1305 to perform various functions (e.g., various functions or tasks supporting CBG-based transmission for multi-codeword channels). For example, device 1305 or a component of device 1305 may include a processor 1335 and a memory 1325 coupled to processor 1335, the processor 1335 and memory 1325 being configured to perform the various functions described herein. Processor 1335 can be an example of a cloud computing platform (e.g., one or more physical nodes and supporting software such as an operating system, virtual machine, or container instance) that can host functionality (e.g., by executing code 1330) to perform the functions of device 1305.

[0224] In some examples, bus 1340 may support communications of a protocol layer (e.g., within a protocol layer) of a protocol stack. In some examples, bus 1340 may support communications associated with a logical channel of a protocol stack (e.g., between protocol layers of a protocol stack), which may include communications performed within a component of device 1305, or communications performed between different components of device 1305 that may be co-located or located in different locations (e.g., where device 1305 may refer to a system in which one or more of communication manager 1320, transceiver 1310, memory 1325, code 1330, and processor 1335 may be located in one of these different components or divided between different components).

[0225] In some examples, communication manager 1320 may manage aspects of communications with core network 130 (e.g., via one or more wired or wireless backhaul links). For example, communication manager 1320 may manage the sending of data communications for client devices, such as one or more UEs 115. In some examples, communication manager 1320 may manage communications with other network entities 105 and may include a controller or scheduler for controlling communications with UE 115 in collaboration with other network entities 105. In some examples, communication manager 1320 may support an X2 interface within an LTE / LTE-A wireless communication network technology to provide communications between network entities 105.

[0226] According to examples as disclosed herein, the communication manager 1320 may support wireless communications at a network entity. For example, the communication manager 1320 may be configured to or otherwise support a component for outputting a resource grant that schedules a first transport block and a second transport block during a receive opportunity on a component carrier. The communication manager 1320 may be configured to or otherwise support a component for obtaining a first transport block and a second transport block during a receive opportunity based on receiving the resource grant. The communication manager 1320 may be configured to or otherwise support a component for obtaining a feedback message associated with a hybrid automatic repeat request feedback and including a first number of feedback bits for a first transport block and a second number of feedback bits for a second transport block, wherein the first number of feedback bits is different from the second number of feedback bits.

[0227] By including or configuring the communication manager 1320 according to the examples described herein, the device 1305 can support enhanced feedback for a PDSCH including multiple transport blocks to support techniques for reducing latency, improving user experience associated with reduced processing, more efficiently utilizing communication resources, extending battery life, and improving utilization of processing power. For example, the device 1305 can support sending feedback on the PDSCH with a variable granularity corresponding to each transport block, rather than sending feedback for a transport block using the same granularity. By allowing granularity corresponding to each transport block, the device 1305 can prevent unnecessary overhead and unnecessary retransmissions, thereby improving resource utilization efficiency. Accordingly, the device 1305 can provide reduced communication latency, improved user experience associated with reduced processing, longer battery life, and improved utilization of processing power.

[0228] In some examples, the communication manager 1320 may be configured to perform various operations (e.g., receive, obtain, monitor, output, transmit) using or otherwise cooperating with the transceiver 1310, one or more antennas 1315 (e.g., where applicable), or any combination thereof. Although the communication manager 1320 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 1320 may be supported or performed by the processor 1335, the memory 1325, the code 1330, the transceiver 1310, or any combination thereof. For example, the code 1330 may include instructions that are executable by the processor 1335 to cause the device 1305 to perform various aspects of CBG-based transmission for multi-codeword channels as described herein, or the processor 1335 and the memory 1325 may be otherwise configured to perform or support such operations.

[0229] Fig.14A flow chart illustrating a method 1400 for supporting CBG-based transmission for a multi-codeword channel according to one or more aspects of the present disclosure is shown. The operations of the method 1400 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1400 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 9 The UE 115 described herein may be executed. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0230] At 1405, the method may include: receiving a resource grant scheduling a first transport block and a second transport block during a reception opportunity on a component carrier. The operations of 1405 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1405 may be performed as described in reference to Figure 8 The resource permission component 825 is executed.

[0231] At 1410, the method may include receiving the first transport block and the second transport block during the reception opportunity. The operations of 1410 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1410 may be performed as described in reference Figure 8 The transmission block component 830 is used to execute.

[0232] At 1415, the method may include sending a feedback message associated with hybrid automatic repeat request feedback and including a first number of feedback bits for the first transmission block and a second number of feedback bits for the second transmission block, wherein the first number of feedback bits is different from the second number of feedback bits. The operations of 1415 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1415 may be performed as described in reference Figure 8 The feedback message component 835 executes.

[0233] Fig.15 A flow chart illustrating a method 1500 for supporting CBG-based transmission for a multi-codeword channel according to one or more aspects of the present disclosure is shown. The operations of the method 1500 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1500 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 9 The UE 115 described herein may be executed. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0234] At 1505, the method may include: receiving control signaling, the control signaling including an indication of transport block level feedback and CBG level feedback, the transport block level feedback including a first number of feedback bits for a first transport block, the CBG level feedback including a second number of feedback bits for a second transport block, the first number of feedback bits including one feedback bit, and the second number of feedback bits including more than one feedback bit associated with a threshold number of CBGs. The operations of 1505 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1505 may be performed as described in reference to Figure 8 The feedback control signaling component 840 is used to perform.

[0235] At 1510, the method may include: receiving a resource grant scheduling the first transport block and the second transport block during a reception opportunity on a component carrier. The operations of 1510 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1510 may be performed as described in reference Figure 8 The resource permission component 825 is executed.

[0236] At 1515, the method may include: receiving the first transmission block and the second transmission block during the reception opportunity. The operations of 1515 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1515 may be performed as described in reference Figure 8 The transmission block component 830 is used to execute.

[0237] At 1520, the method may include sending a feedback message associated with hybrid automatic repeat request feedback and including the first number of feedback bits for the first transmission block and the second number of feedback bits for the second transmission block, wherein the first number of feedback bits is different from the second number of feedback bits. The operations of 1520 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1520 may be performed as described in reference Figure 8 The feedback message component 835 executes.

[0238] Fig.16 A flow chart illustrating a method 1600 for supporting CBG-based transmission for a multi-codeword channel according to one or more aspects of the present disclosure is shown. The operations of the method 1600 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1600 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 9 The UE 115 described herein may be executed. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0239] At 1605, the method may include: receiving control signaling including an indication of a first number of feedback bits for the first transport block and a second number of feedback bits for the second transport block, wherein the second number of feedback bits is greater than the second number of feedback bits. The operations of 1605 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1605 may be performed as described in reference to Figure 8 The feedback control signaling component 840 is used to perform.

[0240] At 1610, the method may include: receiving a resource grant scheduling the first transport block and the second transport block during a reception opportunity on a component carrier. The operations of 1610 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1610 may be performed as described in reference Figure 8 The resource permission component 825 is executed.

[0241] At 1615, the method may include: receiving the first transmission block and the second transmission block during the reception opportunity. The operations of 1615 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1615 may be performed as described in reference Figure 8 The transmission block component 830 is used to execute.

[0242] At 1620, the method may include sending a feedback message associated with hybrid automatic repeat request feedback and including the first number of feedback bits for the first transmission block and the second number of feedback bits for the second transmission block, wherein the first number of feedback bits is different from the second number of feedback bits. The operations of 1620 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1620 may be performed as described in reference Figure 8 The feedback message component 835 executes.

[0243] Fig.17 A flow chart illustrating a method 1700 for supporting CBG-based transmission for a multi-codeword channel according to one or more aspects of the present disclosure is shown. The operations of the method 1700 may be implemented by a network entity or a component thereof as described herein. For example, the operations of the method 1700 may be implemented by a network entity or a component thereof as described herein. Figures 1 to 5 as well as Figures 10 to 13 The network entity described herein performs. In some examples, the network entity may execute an instruction set to control the functional elements of the network entity to perform the described functions. Additionally or alternatively, the network entity may use dedicated hardware to perform various aspects of the described functions.

[0244] At 1705, the method may include: outputting a resource grant that schedules the first transport block and the second transport block during a reception opportunity on the component carrier. The operations of 1705 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1705 may be performed as described in reference to Fig.12 The resource permission component 1225 is executed.

[0245] At 1710, the method may include: obtaining the first transmission block and the second transmission block during the reception opportunity based on receiving the resource grant. The operations of 1710 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1710 may be performed as described in reference to Fig.12 The transmission block component 1230 is used to execute.

[0246] At 1715, the method may include: obtaining a feedback message associated with hybrid automatic repeat request feedback and including a first number of feedback bits for the first transmission block and a second number of feedback bits for the second transmission block, wherein the first number of feedback bits is different from the second number of feedback bits. The operations of 1715 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1715 may be performed as described in reference Fig.12 The feedback message component 1235 executes.

[0247] Fig.18 A flow chart illustrating a method 1800 for supporting CBG-based transmission for a multi-codeword channel according to one or more aspects of the present disclosure is shown. The operations of the method 1800 may be implemented by a network entity or a component thereof as described herein. For example, the operations of the method 1800 may be implemented by a network entity or a component thereof as described herein. Figures 1 to 5 as well as Figures 10 to 13 The network entity described herein performs. In some examples, the network entity may execute an instruction set to control the functional elements of the network entity to perform the described functions. Additionally or alternatively, the network entity may use dedicated hardware to perform various aspects of the described functions.

[0248] At 1805, the method may include: outputting control signaling including an indication of transport block level feedback and CBG level feedback, the transport block level feedback including a first number of feedback bits for a first transport block, the CBG level feedback including a second number of feedback bits for a second transport block, the first number of feedback bits including one feedback bit, and the second number of feedback bits including more than one feedback bit associated with a threshold number of CBGs. The operations of 1805 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1805 may be performed as described in reference to Fig.12 The feedback control signaling component 1240 is executed.

[0249] At 1810, the method may include: outputting a resource grant that schedules the first transport block and the second transport block during a reception opportunity on a component carrier. The operations of 1810 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1810 may be performed as described in reference Fig.12 The resource permission component 1225 is executed.

[0250] At 1815, the method may include: obtaining the first transmission block and the second transmission block during the reception opportunity based on receiving the resource grant. The operations of 1815 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1815 may be performed as described in reference to Fig.12 The transmission block component 1230 is used to execute.

[0251] At 1820, the method may include: obtaining a feedback message associated with hybrid automatic repeat request feedback and including the first number of feedback bits for the first transmission block and the second number of feedback bits for the second transmission block, wherein the first number of feedback bits is different from the second number of feedback bits. The operations of 1820 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1820 may be performed as described in reference Fig.12 The feedback message component 1235 executes.

[0252] Fig.19 A flow chart illustrating a method 1900 for supporting CBG-based transmission for a multi-codeword channel according to one or more aspects of the present disclosure is shown. The operations of the method 1900 may be implemented by a network entity or a component thereof as described herein. For example, the operations of the method 1900 may be implemented by a network entity or a component thereof as described herein. Figures 1 to 5 as well as Figures 10 to 13 The network entity described herein performs. In some examples, the network entity may execute an instruction set to control the functional elements of the network entity to perform the described functions. Additionally or alternatively, the network entity may use dedicated hardware to perform various aspects of the described functions.

[0253] At 1905, the method may include: outputting a resource grant that schedules the first transport block and the second transport block during a reception opportunity on the component carrier. The operations of 1905 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1905 may be performed as described in reference to Fig.12 The resource permission component 1225 is executed.

[0254] At 1910, the method may include: obtaining the first transmission block and the second transmission block during the reception opportunity based on receiving the resource grant. The operations of 1910 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1910 may be performed as described in reference to Fig.12 The transmission block component 1230 is used to execute.

[0255] At 1915, the method may include: obtaining a feedback message associated with hybrid automatic repeat request feedback and including a first number of feedback bits for the first transmission block and a second number of feedback bits for the second transmission block, wherein the first number of feedback bits is different from the second number of feedback bits. The operations of 1915 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1915 may be performed as described in reference Fig.12 The feedback message component 1235 executes.

[0256] At 1920, the method may include: outputting control signaling including an indication of the first number of feedback bits for the first transport block and the second number of feedback bits for the second transport block, wherein the second number of feedback bits is greater than the second number of feedback bits. The operations of 1920 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1920 may be performed as described in reference to Fig.12 The feedback control signaling component 1240 is executed.

[0257] The following provides an overview of various aspects of the disclosure:

[0258] Aspect 1: A method for wireless communication at a UE, the method comprising: receiving a resource grant scheduling a first transport block and a second transport block during a reception opportunity on a component carrier; receiving the first transport block and the second transport block during the reception opportunity; and sending a feedback message, the feedback message being associated with a hybrid automatic repeat request feedback and comprising a first number of feedback bits for the first transport block and a second number of feedback bits for the second transport block, wherein the first number of feedback bits is different from the second number of feedback bits.

[0259] Aspect 2: According to the method of Aspect 1, the method also includes: receiving control signaling, the control signaling including indications of transport block level feedback and CBG level feedback, the transport block level feedback including the first number of feedback bits for the first transport block, the CBG level feedback including the second number of feedback bits for the second transport block, the first number of feedback bits including one feedback bit, and the second number of feedback bits including more than one feedback bit associated with a threshold number of CBGs.

[0260] Aspect 3: According to the method of Aspect 2, the method also includes: mapping the first number of feedback bits to the first transmission block and mapping the second number of feedback bits to the second transmission block based at least in part on a comparison between a first value of one or more parameters of the first transmission block and a second value of the one or more parameters of the second transmission block, wherein the one or more parameters include a transmission block size, a number of codebooks, a modulation and decoding scheme, a transmission rank, an order of identifiers in the resource grant, or a combination thereof.

[0261] Aspect 4: According to the method described in any one of Aspects 2 to 3, the method further includes: generating a first part of the feedback message according to a first subcode associated with the transmission block level feedback, the first part including the one feedback bit associated with the first transmission block; and generating a second part of the feedback message according to a second subcode associated with the CBG level feedback, the second part including the second number of feedback bits associated with the second transmission block.

[0262] Aspect 5: The method according to aspect 4, the method further comprising: receiving a first set of downlink assignment indexes associated with the first subcodebook and a second set of downlink assignment indexes associated with the second subcodebook in the resource grant, wherein generating the first part of the feedback message is at least partially based on the first set of downlink assignment indexes, and generating the second part of the feedback message is at least partially based on the second set of downlink assignment indexes.

[0263] Aspect 6: According to the method described in any one of Aspects 2 to 5, the method further includes: generating a first part of the feedback message based on a first subcode with CBG level feedback, the first part including the one feedback bit associated with the first transmission block and the second number of feedback bits associated with the second transmission block.

[0264] Aspect 7: The method according to aspect 6, the method further comprising: receiving, in the resource grant, a set of downlink assignment indexes for the first subcodebook and the second subcodebook with transport block level feedback, wherein each downlink assignment index position associated with a corresponding downlink assignment index in the set of downlink assignment indexes is associated with a number of feedback bits, the number of feedback bits being greater than or equal to the sum of the first number of feedback bits and the second number of feedback bits.

[0265] Aspect 8: A method according to Aspect 7, wherein each downlink assignment index position associated with a corresponding downlink assignment index in the set of downlink assignment indices is associated with the number of feedback bits, and the number of feedback bits is at least partially based on a threshold number of feedback bits supported on multiple component carriers including the component carrier.

[0266] Aspect 9: According to the method of any one of Aspects 1 to 8, the method further comprises: generating the feedback message according to a feedback codebook, the feedback message comprising a total number of feedback bits corresponding to multiple reception opportunities on the component carrier.

[0267] Aspect 10: A method according to aspect 9, wherein each of the multiple reception opportunities corresponds to a subset of the total number of feedback bits, the subset being equal to the product of two and a threshold number of CBGs.

[0268] Aspect 11: A method according to any one of Aspects 9 to 10, wherein each of the multiple reception opportunities corresponds to a subset of the total number of feedback bits, and the subset is equal to the sum of the first number of feedback bits and the second number of feedback bits.

[0269] Aspect 12: According to the method described in any one of Aspects 1 to 11, the method further includes: generating the feedback message according to a feedback codebook, the feedback message including the total number of feedback bits corresponding to multiple feedback process identifiers, wherein each feedback process identifier in the multiple feedback process identifiers corresponds to a subset of the total number of feedback bits, and the subset is equal to the sum of the first number of feedback bits and the second number of feedback bits.

[0270] Aspect 13: According to the method described in any one of Aspects 1 to 12, the method further includes: receiving control signaling, the control signaling including an indication of the first number of feedback bits for the first transmission block and the second number of feedback bits for the second transmission block, wherein the second number of feedback bits is greater than the second number of feedback bits.

[0271] Aspect 14: According to the method of Aspect 13, the method also includes: mapping the first number of feedback bits to the first transmission block and mapping the second number of feedback bits to the second transmission block based at least in part on a comparison between the values ​​of one or more parameters of the first transmission block and the corresponding values ​​of the one or more parameters of the second transmission block, the one or more parameters including the transmission block size, the number of codebooks, the modulation and decoding scheme, the transmission rank, the order of identifiers in the resource grant, or a combination thereof.

[0272] Aspect 15: According to the method described in any one of Aspects 13 to 14, the method further includes: generating a first part of the feedback message based on a subcodebook with CBG-level feedback, the first part including the first number of feedback bits associated with the first transmission block and the second number of feedback bits associated with the second transmission block.

[0273] Aspect 16: The method according to aspect 15 further comprises: receiving a set of downlink assignment indices for the subcodebook in the resource grant, wherein each downlink assignment index position associated with a corresponding downlink assignment index in the set of downlink assignment indices is associated with a number of feedback bits, and the number of feedback bits is equal to the sum of the first number of feedback bits and the second number of feedback bits.

[0274] Aspect 17: A method for wireless communication at a network entity, the method comprising: outputting a resource grant for scheduling a first transport block and a second transport block during a reception opportunity on a component carrier; obtaining the first transport block and the second transport block during the reception opportunity based at least in part on receiving the resource grant; and obtaining a feedback message, the feedback message being associated with a hybrid automatic repeat request feedback and comprising a first number of feedback bits for the first transport block and a second number of feedback bits for the second transport block, wherein the first number of feedback bits is different from the second number of feedback bits.

[0275] Aspect 18: According to the method of Aspect 17, the method also includes: outputting control signaling, the control signaling including indications of transport block level feedback and CBG level feedback, the transport block level feedback including the first number of feedback bits for the first transport block, the CBG level feedback including the second number of feedback bits for the second transport block, the first number of feedback bits including one feedback bit, and the second number of feedback bits including more than one feedback bit associated with a threshold number of CBGs.

[0276] Aspect 19: According to the method of Aspect 18, the method also includes: decoding a first part of the feedback message according to a first subcode associated with the transmission block level feedback, the first part including the one feedback bit associated with the first transmission block; and decoding a second part of the feedback message according to a second subcode associated with the CBG level feedback, the second part including the second number of feedback bits associated with the second transmission block.

[0277] Aspect 20: The method according to aspect 19, the method further comprising: outputting a first set of downlink assignment indices associated with the first subcodebook and a second set of downlink assignment indices associated with the second subcodebook in the resource grant, wherein decoding the first part of the feedback message is at least partially based on the first set of downlink assignment indices, and decoding the second part of the feedback message is at least partially based on the second set of downlink assignment indices.

[0278] Aspect 21: According to the method described in any one of Aspects 18 to 20, the method further includes: decoding a first part of the feedback message according to a first subcode with CBG level feedback, the first part including the one feedback bit associated with the first transmission block and the second number of feedback bits associated with the second transmission block.

[0279] Aspect 22: The method according to aspect 21, the method further comprising: outputting a set of downlink assignment indexes for the first subcodebook and the second subcodebook with transport block level feedback in the resource grant, wherein each downlink assignment index position associated with a corresponding downlink assignment index in the set of downlink assignment indexes is associated with a number of feedback bits, the number of feedback bits being greater than or equal to the sum of the first number of feedback bits and the second number of feedback bits.

[0280] Aspect 23: A method according to Aspect 22, wherein each downlink assignment index position associated with a corresponding downlink assignment index in the set of downlink assignment indices is associated with the number of feedback bits, and the number of feedback bits is at least partially based on a threshold number of feedback bits supported on multiple component carriers including the component carrier.

[0281] Aspect 24: According to any one of Aspects 17 to 23, the method further includes: outputting control signaling, the control signaling including an indication of the first number of feedback bits for the first transmission block and the second number of feedback bits for the second transmission block, wherein the second number of feedback bits is greater than the second number of feedback bits.

[0282] Aspect 25: According to the method of Aspect 24, the method also includes: decoding a first part of the feedback message according to a subcodebook with CBG level feedback, the first part including the first number of feedback bits associated with the first transmission block and the second number of feedback bits associated with the second transmission block.

[0283] Aspect 26: According to the method according to Aspect 25, the method also includes: outputting a set of downlink assignment indexes for the subcodebook in the resource grant, wherein each downlink assignment index position associated with a corresponding downlink assignment index in the set of downlink assignment indexes is associated with the number of feedback bits, and the number of feedback bits is equal to the sum of the first number of feedback bits and the second number of feedback bits.

[0284] Aspect 27: An apparatus for performing wireless communications at a UE, 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 16.

[0285] Aspect 28: An apparatus for wireless communication at a UE, the apparatus comprising: at least one component for performing the method according to any one of aspects 1 to 16.

[0286] Aspect 29: A non-transitory computer-readable medium storing a code for wireless communication at a UE, the code comprising instructions executable by a processor to perform the method according to any one of aspects 1 to 16.

[0287] Aspect 30: An apparatus for wireless communication at a network entity, 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 17 to 26.

[0288] Aspect 31: An apparatus for wireless communication at a network entity, the apparatus comprising: at least one means for performing the method according to any one of aspects 17 to 26.

[0289] Aspect 32: A non-transitory computer-readable medium storing code for wireless communication at a network entity, the code comprising instructions executable by a processor to perform the method according to any one of aspects 17 to 26.

[0290] 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 other implementations are possible. In addition, aspects from two or more methods may be combined.

[0291] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for example purposes, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in 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 described techniques 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.

[0292] The information and signals described herein may be represented using any of a variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be mentioned throughout the specification may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or optical particles, or any combination thereof.

[0293] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or performed using a general purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic components, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in an alternative, the processor may be any processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).

[0294] 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 the one or more instructions or codes. Other examples and specific implementations are within the scope of the present 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 items. 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.

[0295] Computer-readable medium includes both non-transient computer storage medium and communication medium, and it includes any medium that facilitates 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 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, disk storage device or other magnetic storage device, or can be used for carrying or storing desired program code member and can be accessed by general or special-purpose computer or general or special-purpose processor in the form of instruction or data structure Any other non-transient medium.Moreover, any connection is appropriately referred to as computer-readable medium.For example, if software is sent from website, server or other remote source using coaxial cable, optical fiber cable, twisted pair, digital subscriber line (DSL) or wireless technology such as infrared, radio and microwave, then coaxial cable, optical fiber cable, twisted pair, DSL or wireless technology such as infrared, radio and microwave are included in the definition of computer-readable medium. Disk and disc as used herein include CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc. Disk can reproduce data magnetically and disc can reproduce data optically using lasers. Combinations of the above are also included within the scope of computer-readable media.

[0296] 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, such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). 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 condition A and condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "based at least in part on."

[0297] 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, and the like. Furthermore, "determining" may include receiving (e.g., receiving information), accessing (e.g., accessing data stored in a memory), etc. Additionally, "determining" may include parsing, obtaining, selecting, choosing, establishing, and other such similar actions.

[0298] In the 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 may apply to any of the similar components having the same first reference label regardless of the second reference label, or other subsequent reference labels.

[0299] The descriptions set forth herein in conjunction with the accompanying drawings describe example configurations and do not represent all examples that may be implemented or within the scope of the claims. The term "example" as used herein means "used as an example, instance, or illustration," rather than "preferred" or "advantageous over other examples." The specific implementation includes specific details to provide an understanding of the described techniques. However, these techniques may be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0300] The description herein is provided to enable one of ordinary skill in the art to implement or use the present disclosure. Various modifications to the present disclosure will be apparent to one of ordinary skill in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Thus, the present disclosure is not limited to the examples and designs described herein, but should be granted the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication at a user equipment (UE), the method comprising: receiving a resource grant scheduling a first transport block and a second transport block during a receive opportunity on the component carrier; receiving the first transport block and the second transport block during the reception opportunity; as well as A feedback message is sent, the feedback message being associated with hybrid automatic repeat request feedback and comprising a first number of feedback bits for the first transport block and a second number of feedback bits for the second transport block, wherein the first number of feedback bits is different from the second number of feedback bits.

2. The method according to claim 1, further comprising: receiving control signaling including an indication of transport block level feedback and code block group level feedback, the transport block level feedback including the first number of feedback bits for the first transport block, the code block group level feedback including the second number of feedback bits for the second transport block, the first number of feedback bits including one feedback bit, and the second number of feedback bits including more than one feedback bit associated with a threshold number of code block groups.

3. The method according to claim 2, further comprising: Mapping the first number of feedback bits to the first transport block and mapping the second number of feedback bits to the second transport block based at least in part on a comparison between first values ​​of one or more parameters of the first transport block and second values ​​of the one or more parameters of the second transport block, the one or more parameters comprising a transport block size, a number of codebooks, a modulation and coding scheme, a transmission rank, an order of identifiers in the resource grant, or a combination thereof.

4. The method according to claim 2, further comprising: generating a first part of the feedback message according to a first subcodebook associated with transport block level feedback, the first part comprising the one feedback bit associated with the first transport block; and A second portion of the feedback message is generated according to a second subcodebook associated with the code block group level feedback, the second portion comprising the second number of feedback bits associated with the second transport block.

5. The method according to claim 4, further comprising: and receiving, in the resource grant, a first set of downlink assignment indices associated with the first subcodebook and a second set of downlink assignment indices associated with the second subcodebook, wherein generating the first part of the feedback message is based at least in part on the first set of downlink assignment indices, and generating the second part of the feedback message is based at least in part on the second set of downlink assignment indices.

6. The method according to claim 2, further comprising: A first part of the feedback message is generated according to a first subcodebook with the code block group level feedback, the first part comprising the one feedback bit associated with the first transport block and the second number of feedback bits associated with the second transport block.

7. The method according to claim 6, further comprising: A set of downlink assignment indexes for the first subcodebook and a second subcodebook with transport block level feedback is received in the resource grant, wherein each downlink assignment index position associated with a respective downlink assignment index in the set of downlink assignment indexes is associated with a number of feedback bits, the number of feedback bits being greater than or equal to a sum of the first number of feedback bits and the second number of feedback bits.

8. The method of claim 7, wherein each downlink assignment index position associated with a corresponding downlink assignment index in the set of downlink assignment indices is associated with the number of feedback bits, the number of feedback bits being based at least in part on a threshold number of feedback bits supported on a plurality of component carriers including the component carrier.

9. The method according to claim 1, further comprising: The feedback message is generated according to a feedback codebook, the feedback message including a total number of feedback bits corresponding to a plurality of reception opportunities on the component carrier.

10. The method of claim 9, wherein each of the plurality of reception opportunities corresponds to a subset of the total number of feedback bits, the subset being equal to a product of two and a threshold number of code block groups.

11. The method of claim 9, wherein each of the plurality of receive opportunities corresponds to a subset of the total number of feedback bits, the subset being equal to a sum of the first number of feedback bits and the second number of feedback bits.

12. The method according to claim 1, further comprising: The feedback message is generated according to a feedback codebook, the feedback message including a total number of feedback bits corresponding to a plurality of feedback process identifiers, wherein each feedback process identifier of the plurality of feedback process identifiers corresponds to a subset of the total number of feedback bits, the subset being equal to a sum of the first number of feedback bits and the second number of feedback bits.

13. The method according to claim 1, further comprising: Control signaling is received, the control signaling comprising an indication of the first number of feedback bits for the first transport block and the second number of feedback bits for the second transport block, wherein the second number of feedback bits is greater than the second number of feedback bits.

14. The method according to claim 13, further comprising: Mapping the first number of feedback bits to the first transport block and mapping the second number of feedback bits to the second transport block based at least in part on a comparison between values ​​of one or more parameters of the first transport block and corresponding values ​​of the one or more parameters of the second transport block, the one or more parameters comprising a transport block size, a number of codebooks, a modulation and coding scheme, a transmission rank, an order of identifiers in the resource grant, or a combination thereof.

15. The method according to claim 13, further comprising: A first portion of the feedback message is generated according to a subcodebook with code block group level feedback, the first portion comprising the first number of feedback bits associated with the first transport block and the second number of feedback bits associated with the second transport block.

16. The method according to claim 15, further comprising: A set of downlink assignment indices for the subcodebook is received in the resource grant, wherein each downlink assignment index position associated with a corresponding downlink assignment index in the set of downlink assignment indices is associated with a number of feedback bits, the number of feedback bits being equal to a sum of the first number of feedback bits and the second number of feedback bits.

17. A method for wireless communication at a network entity, the method comprising: outputting a resource grant scheduling a first transport block and a second transport block during a receive opportunity on the component carrier; obtaining the first transport block and the second transport block during the receive opportunity based at least in part on receiving the resource grant; as well as A feedback message is obtained, the feedback message being associated with hybrid automatic repeat request feedback and comprising a first number of feedback bits for the first transport block and a second number of feedback bits for the second transport block, wherein the first number of feedback bits is different from the second number of feedback bits.

18. The method according to claim 17, further comprising: outputting control signaling, the control signaling comprising an indication of transport block level feedback and code block group level feedback, the transport block level feedback comprising the first number of feedback bits for the first transport block, the code block group level feedback comprising the second number of feedback bits for the second transport block, the first number of feedback bits comprising one feedback bit, and the second number of feedback bits comprising more than one feedback bit associated with a threshold number of code block groups.

19. The method according to claim 18, further comprising: decoding a first part of the feedback message according to a first subcodebook associated with transport block level feedback, the first part comprising the one feedback bit associated with the first transport block; and A second portion of the feedback message is decoded according to a second subcodebook associated with the code block group level feedback, the second portion comprising the second number of feedback bits associated with the second transport block.

20. The method according to claim 19, further comprising: and outputting, in the resource grant, a first set of downlink assignment indices associated with the first subcodebook and a second set of downlink assignment indices associated with the second subcodebook, wherein decoding the first portion of the feedback message is based at least in part on the first set of downlink assignment indices, and decoding the second portion of the feedback message is based at least in part on the second set of downlink assignment indices.

21. The method according to claim 18, further comprising: A first portion of the feedback message is decoded according to a first subcodebook with the code block group level feedback, the first portion comprising the one feedback bit associated with the first transport block and the second number of feedback bits associated with the second transport block.

22. The method according to claim 21, further comprising: and outputting, in the resource grant, a set of downlink assignment indexes for the first subcodebook and a second subcodebook with transport block level feedback, wherein each downlink assignment index position associated with a corresponding downlink assignment index in the set of downlink assignment indexes is associated with a number of feedback bits, the number of feedback bits being greater than or equal to a sum of the first number of feedback bits and the second number of feedback bits.

23. The method of claim 22, wherein each downlink assignment index position associated with a corresponding downlink assignment index in the set of downlink assignment indices is associated with the number of feedback bits, the number of feedback bits being based at least in part on a threshold number of feedback bits supported on a plurality of component carriers including the component carrier.

24. The method according to claim 17, further comprising: Outputting control signaling including an indication of the first number of feedback bits for the first transport block and the second number of feedback bits for the second transport block, wherein the second number of feedback bits is greater than the second number of feedback bits.

25. The method according to claim 24, further comprising: A first portion of the feedback message is decoded according to a subcodebook with code block group level feedback, the first portion comprising the first number of feedback bits associated with the first transport block and the second number of feedback bits associated with the second transport block.

26. The method according to claim 25, further comprising: and outputting a set of downlink assignment indexes for the subcodebook in the resource grant, wherein each downlink assignment index position associated with a corresponding downlink assignment index in the set of downlink assignment indexes is associated with a number of feedback bits, the number of feedback bits being equal to a sum of the first number of feedback bits and the second number of feedback bits.

27. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: processor; a memory coupled to the processor; as well as instructions stored in the memory and executable by the processor to cause the apparatus to: receiving a resource grant scheduling a first transport block and a second transport block during a receive opportunity on the component carrier; receiving the first transport block and the second transport block during the reception opportunity; as well as A feedback message is sent, the feedback message being associated with hybrid automatic repeat request feedback and comprising a first number of feedback bits for the first transport block and a second number of feedback bits for the second transport block, wherein the first number of feedback bits is different from the second number of feedback bits.

28. The apparatus of claim 27, wherein the instructions are further executable by the processor to cause the apparatus to: receiving control signaling including an indication of transport block level feedback and code block group level feedback, the transport block level feedback including the first number of feedback bits for the first transport block, the code block group level feedback including the second number of feedback bits for the second transport block, the first number of feedback bits including one feedback bit, and the second number of feedback bits including more than one feedback bit associated with a threshold number of code block groups.

29. The apparatus of claim 27, wherein the instructions are further executable by the processor to cause the apparatus to: Control signaling is received, the control signaling comprising an indication of the first number of feedback bits for the first transport block and the second number of feedback bits for the second transport block, wherein the second number of feedback bits is greater than the second number of feedback bits.

30. An apparatus for wireless communication at a network entity, the apparatus comprising: processor; a memory coupled to the processor; as well as instructions stored in the memory and executable by the processor to cause the apparatus to: outputting a resource grant scheduling a first transport block and a second transport block during a receive opportunity on the component carrier; obtaining the first transport block and the second transport block during the receive opportunity based at least in part on receiving the resource grant; as well as A feedback message is obtained, the feedback message being associated with hybrid automatic repeat request feedback and comprising a first number of feedback bits for the first transport block and a second number of feedback bits for the second transport block, wherein the first number of feedback bits is different from the second number of feedback bits.

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