HARQ feedback for pdsch transmission
Patent Information
- Application Number
- PCT/CN2024/127120
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-10-24
- Publication Date
- 2025-10-02
AI Technical Summary
Existing wireless communication systems face challenges in enhancing the flexibility and efficiency of Hybrid Automatic Repeat Request (HARQ) feedback for Physical Downlink Shared Channel (PDSCH) transmissions, particularly in semantic communication scenarios, which require advanced AI-based data processing to improve network efficiency.
Implementing a method and apparatus that differentiate data blocks based on priority levels, allowing for HARQ feedback based on the decoding results of high-priority data blocks, with lower-priority blocks receiving ACK/NACK or being canceled, and using DCI or RRC signaling to determine the number and priority of data blocks.
Enhances the flexibility and efficiency of HARQ feedback, optimizing resource utilization by prioritizing high-priority data blocks and simplifying feedback processes, thereby improving network performance.
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Figure CN2024127120_02102025_PF_FP_ABST
Abstract
Description
HARQ FEEDBACK FOR PDSCH TRANSMISSIONTECHNICAL FIELD
[0001] The present disclosure relates to wireless communications, and more specifically to hybrid automatic repeat request (HARQ) feedback for a physical downlink shared channel (PDSCH) transmission.BACKGROUND
[0002] A wireless communications system may include one or multiple network communication devices, such as base stations (BSs) , which may be otherwise known as an eNodeB (eNB) , a next-generation NodeB (gNB) , or other suitable terminology. Each network communication device, such as a base station may support wireless communications for one or multiple user communication devices, which may be otherwise known as user equipment (UE) , or other suitable terminology. The wireless communications system may support wireless communications with one or multiple user communication devices by utilizing resources of the wireless communication system (e.g., time resources (e.g., symbols, slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers) . Additionally, the wireless communications system may support wireless communications across various radio access technologies including third generation (3G) radio access technology, fourth generation (4G) radio access technology, fifth generation (5G) radio access technology, among other suitable radio access technologies beyond 5G (e.g., sixth generation (6G) ) .
[0003] With the developments of communication technology, semantic communication is inspired as a brand-new technology in 6G to break out the “Shannon’s trap” , which identifies and utilizes the meaning of messages during internet communication. In contrast to conventional data-oriented communication networks, the capacity of semantic communication is improved at the cost of system complexity. Semantic communication enables all communication participants to lighten the network burden via transmitting the most relevant information to a receiver or a goal of a communication task after the pre-processing of the data based on advanced artificial intelligence (AI) technology. However, enhancements on semantic communication, especially HARQ feedback for semantic communication, are still needed.SUMMARY
[0004] The present disclosure relates to methods, apparatuses, and systems that support HARQ feedback for the PDSCH transmission. With the apparatuses and methods, it is allowed to improve the flexibility and efficiency of the HARQ feedback for the PDSCH transmission and resource utilization, especially, in semantic communication scenarios.
[0005] In some implementations, there is provided a user equipment (UE) . The UE comprises at least one memory, and at least one processor coupled with the at least one memory and configured to cause the UE to: receive, from a base station (BS) , a group of data blocks, wherein a data block of the group of data blocks comprises one of a transmission block (TB) or a code block group (CBG) , and wherein one or more first data blocks of the group of data blocks are associated with a first priority level, and one or more second data blocks of the group of data blocks are associated with a second priority level lower than the first priority level, and transmit, to the BS, hybrid automatic repeat request (HARQ) feedback for the group of data blocks based on a decoding result of the one or more first data blocks.
[0006] In some implementations, there is provided a method performed by the UE. The method comprises: receiving, from a base station (BS) , a group of data blocks, wherein a data block of the group of data blocks comprises one of a transmission block (TB) or a code block group (CBG) , and wherein one or more first data blocks of the group of data blocks are associated with a first priority level, and one or more second data blocks of the group of data blocks are associated with a second priority level lower than the first priority level, and transmitting, to the BS, hybrid automatic repeat request (HARQ) feedback for the group of data blocks based on a decoding result of the one or more first data blocks.
[0007] In some implementations, there is provided a processor for wireless communication. The processor comprises at least one controller coupled with at least one memory and configured to cause the processor to: receive, from a base station (BS) , a group of data blocks, wherein a data block of the group of data blocks comprises one of a transmission block (TB) or a code block group (CBG) , and wherein one or more first data blocks of the group of data blocks are associated with a first priority level, and one or more second data blocks of the group of data blocks are associated with a second priority level lower than the first priority level, and transmit, to the BS, hybrid automatic repeat request (HARQ) feedback for the group of data blocks based on a decoding result of the one or more first data blocks.
[0008] In some implementations of the method and the UE described herein, the group of data blocks may comprise a group of TBs, and the group of TBs may comprise one of the following: a plurality of TBs scheduled by single downlink control information (DCI) , a plurality of TBs scheduled by a plurality of DCIs in a time window, a plurality of TBs transmitted in a time window, or a plurality of TBs transmitted in a period of a semi-persistent scheduling (SPS) configuration. In some implementations of the method and the UE described herein, the DCI may be associated with the first priority level. In some implementations of the method and the UE described herein, the DCI may be received in a search space associated with the first priority level or a control resource set (CORSET) associated with the first priority level. In some implementations of the method and the UE described herein, the DCI may comprise an indication indicating that the DCI is associated with the first priority level. In some implementations of the method and the UE described herein, the SPS configuration may be configured for the first priority level.
[0009] In some implementations of the method and the UE described herein, the group of data blocks may comprise a group of CBGs, and a number of the group of CBGs may comprise one of the following: a configured maximum number of CBGs in a TB, or an actual number of CBGs included in a TB.
[0010] In some implementations of the method and the UE described herein, a data block of the group of data blocks may be determined to be associated with the first priority level if a priority or importance of the data block is higher than a threshold.
[0011] In some implementations of the method and the UE described herein, a number of data blocks in the one or more first data blocks may be indicated based on a DCI or a radio resource control (RRC) signaling. In some implementations of the method and the UE described herein, the number of data blocks in the one or more first data blocks may be H, and the one or more first data blocks may be first H data blocks among the group of data blocks or last H data blocks among the group of data blocks. In some implementations of the method and the UE described herein, the one or more first data blocks may be determined based on an indication of a bitmap, where a respective bit of the bitmap indicates whether a respective data block of the group of data blocks may be with the first priority level. In some implementations of the method and the UE described herein, the one or more first data blocks may comprise one or more CBGs, and the one or more first data blocks may be determined based on an indication of a number of bits with the first priority level in a TB. In some implementations of the method and the UE described herein, the one or more first data blocks may comprise the one or more CBGs, and the one or more first data blocks may be determined based on the indication of a number of bits with the first priority level in a TB, and a CBG may be determined to be comprised in the one or more first data blocks if the CBG comprises at least one of the number of bits with the first priority level.
[0012] In some implementations of the method and the UE described herein, the one or more first data blocks may be associated with a first transmission parameter, and the one or more second data blocks may be associated with a second transmission parameter, and the first transmission parameter or the second transmission parameter may comprise at least one of the following: a modulation and coding scheme (MCS) , a frequency domain resource, or a redundancy version (RV) . Some implementations of the method and the UE described herein may further include receiving, from the BS, one of the following: an indication of the first transmission parameter, and the second transmission parameter is determined based on the first transmission parameter, an indication of the second transmission parameter, and the first transmission parameter is determined based on the second transmission parameter, or an indication of both the first transmission parameter and the second transmission parameter.
[0013] In some implementations of the method and the UE described herein, the HARQ feedback for the group of data blocks may be equal to AND of HARQ feedback for the one or more first data blocks.
[0014] In some implementations of the method and the UE described herein, the HARQ feedback for the one or more first data blocks may be based on the decoding result of the one or more first data blocks, and HARQ feedback for each of the one or more second data blocks may be set to acknowledgment (ACK) or non-acknowledgment (NACK) , or canceled or not needed.
[0015] In some implementations of the method and the UE described herein, the group of data blocks may comprise a group of TBs, and a time-domain resource for the HARQ feedback may be determined based on a time-domain resource for a last data block of the one or more first data blocks.
[0016] In some implementations, there is provided a base station (BS) . The BS comprises at least one memory, and at least one processor coupled with the at least one memory and configured to cause the BS to: transmit, to a user equipment (UE) , a group of data blocks, wherein a data block of the group of data blocks comprises one of a transmission block (TB) or a code block group (CBG) , and wherein one or more first data blocks of the group of data blocks are associated with a first priority level, and one or more second data blocks of the group of data blocks are associated with a second priority level lower than the first priority level, and receive, from the UE, hybrid automatic repeat request (HARQ) feedback for the group of data blocks, wherein the HARQ feedback is associated with a decoding result of the one or more first data blocks.
[0017] In some implementations, there is provided a method performed by the BS. The method comprises: transmit, to a user equipment (UE) , a group of data blocks, wherein a data block of the group of data blocks comprises one of a transmission block (TB) or a code block group (CBG) , and wherein one or more first data blocks of the group of data blocks are associated with a first priority level, and one or more second data blocks of the group of data blocks are associated with a second priority level lower than the first priority level, and receive, from the UE, hybrid automatic repeat request (HARQ) feedback for the group of data blocks, wherein the HARQ feedback is associated with a decoding result of the one or more first data blocks.
[0018] In some implementations, there is provided a processor for wireless communication. The processor comprises at least one controller coupled with at least one memory and configured to cause the processor to: transmit, to a user equipment (UE) , a group of data blocks, wherein a data block of the group of data blocks comprises one of a transmission block (TB) or a code block group (CBG) , and wherein one or more first data blocks of the group of data blocks are associated with a first priority level, and one or more second data blocks of the group of data blocks are associated with a second priority level lower than the first priority level, and receive, from the UE, hybrid automatic repeat request (HARQ) feedback for the group of data blocks, wherein the HARQ feedback is associated with a decoding result of the one or more first data blocks.
[0019] In some implementations of the method and the BS described herein, the group of data blocks may comprise a group of TBs, and the group of TBs may comprise one of the following: a plurality of TBs scheduled by single downlink control information (DCI) , a plurality of TBs scheduled by a plurality of DCIs in a time window, a plurality of TBs transmitted in a time window, or a plurality of TBs transmitted in a period of a semi-persistent scheduling (SPS) configuration. In some implementations of the method and the BS described herein, the DCI may be associated with the first priority level. In some implementations of the method and the BS described herein, the DCI may be received in a search space associated with the first priority level or a control resource set (CORSET) associated with the first priority level. In some implementations of the method and the BS described herein, the DCI may comprise an indication indicating that the DCI is associated with the first priority level. In some implementations of the method and the BS described herein, the SPS configuration may be configured for the first priority level.
[0020] In some implementations of the method and the BS described herein, the group of data blocks may comprise a group of CBGs, and a number of the group of CBGs may comprise one of the following: a configured maximum number of CBGs in a TB, or an actual number of CBGs included in a TB.
[0021] In some implementations of the method and the BS described herein, a data block of the group of data blocks may be determined to be associated with the first priority level if a priority or importance of the data block is higher than a threshold.
[0022] In some implementations of the method and the BS described herein, a number of data blocks in the one or more first data blocks may be indicated based on a DCI or a radio resource control (RRC) signaling.
[0023] In some implementations of the method and the BS described herein, the number of data blocks in the one or more first data blocks may be H, and the one or more first data blocks may be first H data blocks among the group of data blocks or last H data blocks among the group of data blocks. In some implementations of the method and the BS described herein, the one or more first data blocks may be determined based on an indication of a bitmap, where a respective bit of the bitmap may indicate whether a respective data block of the group of data blocks is with the first priority level. In some implementations of the method and the BS described herein, the one or more first data blocks may comprise one or more CBGs, and the one or more first data blocks may be determined based on an indication of a number of bits with the first priority level in a TB. In some implementations of the method and the BS described herein, the one or more first data blocks may comprise the one or more CBGs, and the one or more first data blocks may be determined based on the indication of a number of bits with the first priority level in a TB, and a CBG may be determined to be comprised in the one or more first data blocks if the CBG comprises at least one of the number of bits with the first priority level.
[0024] In some implementations of the method and the BS described herein, the one or more first data blocks may be associated with a first transmission parameter, and the one or more second data blocks may be associated with a second transmission parameter. In some implementations of the method and the BS described herein, the first transmission parameter or the second transmission parameter may comprise at least one of the following: a modulation and coding scheme (MCS) , a frequency domain resource, or a redundancy version (RV) . Some implementations of the method and the BS described herein may further include transmitting, to the UE, one of the following: an indication of the first transmission parameter, and the second transmission parameter is determined based on the first transmission parameter, an indication of the second transmission parameter, and the first transmission parameter is determined based on the second transmission parameter, or an indication of both the first transmission parameter and the second transmission parameter.
[0025] In some implementations of the method and the BS described herein, the HARQ feedback for the group of data blocks may be equal to AND of HARQ feedback for the one or more first data blocks. In some implementations of the method and the BS described herein, the HARQ feedback for the one or more first data blocks may be based on the decoding result of the one or more first data blocks, and wherein HARQ feedback for each of the one or more second data blocks is set to acknowledgment (ACK) or non-acknowledgment (NACK) , or canceled or not needed.
[0026] In some implementations of the method and the BS described herein, the group of data blocks may comprise a group of TBs, and a time-domain resource for the HARQ feedback is determined based on a time-domain resource for a last data block of the one or more first data blocks.BRIEF DESCRIPTION OF THE DRAWINGS
[0027] FIG. 1A illustrates an example of a wireless communications system that supports HARQ feedback for the PDSCH transmission in accordance with aspects of the present disclosure;
[0028] FIG. 1B illustrates an example processing procedure of semantic communication associated with aspects of the present disclosure;
[0029] FIG. 2 illustrates an example process flow in accordance with some example embodiments of the present disclosure;
[0030] FIG. 3A illustrates an example CBG grouping in accordance with some example embodiments of the present disclosure;
[0031] FIGS. 3B to 3D illustrate example determination of data blocks with a higher priority in accordance with some example embodiments of the present disclosure;
[0032] FIGS. 3E to 3G illustrate example HARQ feedback in accordance with some example embodiments of the present disclosure;
[0033] FIG. 4 illustrates an example of a device that supports HARQ feedback for the PDSCH transmission in accordance with aspects of the present disclosure;
[0034] FIG. 5 illustrates an example of a processor that supports HARQ feedback for the PDSCH transmission in accordance with aspects of the present disclosure; and
[0035] FIGS. 6 through 7 illustrate flowcharts of methods that support HARQ feedback for the PDSCH transmission in accordance with aspects of the present disclosure.
[0036] Throughout the drawings, the same or similar reference numerals represent the same or similar elements.DETAILED DESCRIPTION
[0037] Principles of the present disclosure will now be described with reference to some embodiments. It is to be understood that these embodiments are described only for the purpose of illustration and help those skilled in the art to understand and implement the present disclosure, without suggesting any limitation as to the scope of the disclosure. The disclosure described herein may be implemented in various manners other than the ones described below.
[0038] In the following description and claims, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skills in the art to which this disclosure belongs.
[0039] References in the present disclosure to “one embodiment, ” “an example embodiment, ” “an embodiment, ” “some embodiments, ” and the like indicate that the embodiment (s) described may include a particular feature, structure, or characteristic, but it is not necessary that every embodiment includes the particular feature, structure, or characteristic. Moreover, such phrases do not necessarily refer to the same embodiment (s) . Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to affect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
[0040] It shall be understood that although the terms “first” and “second” or the like may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element could also be termed as a second element, and similarly, a second element could also be termed as a first element, without departing from the scope of embodiments. As used herein, the term “and / or” includes any and all combinations of one or more of the listed terms.
[0041] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms “a” , “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” , “comprising” , “has” , “having” , “includes” and / or “including” , when used herein, specify the presence of stated features, elements, and / or components etc., but do not preclude the presence or addition of one or more other features, elements, components and / or combinations thereof.
[0042] As used herein, the term “communication network” refers to a network following any suitable communication standards, such as, 5G new radio (NR) , LTE, LTE-Advanced (LTE-A) , Wideband Code Division Multiple Access (WCDMA) , High-Speed Packet Access (HSPA) , Narrow Band Internet of Things (NB-IoT) , and so on. Further, the communications between a UE and a network device in the communication network may be performed according to any suitable generation communication protocols, including but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the 4G, 4.5G, the 5G communication protocols, and / or any other protocols either currently known or to be developed in the future. Embodiments of the present disclosure may be applied in various communication systems. Given the rapid development in communications, there will also be future type communication technologies and systems in which the present disclosure may be embodied. It should not be seen as limiting the scope of the present disclosure to only the aforementioned systems.
[0043] As used herein, the term “network device” generally refers to a node in a communication network via which a UE can access the communication network and receive services therefrom. The network device may refer to a base station (BS) or an access point (AP) , for example, a node B (NodeB or NB) , a radio access network (RAN) node, an evolved NodeB (eNodeB or eNB) , an NR NB (also referred to as a gNB) , a Remote Radio Unit (RRU) , a radio header (RH) , an infrastructure device for a vehicle-to-everything (V2X) communication, a transmission and reception point (TRP) , a reception point (RP) , a remote radio head (RRH) , a relay, an integrated access and backhaul (IAB) node, a low power node such as a femto a base station (BS) , a pico BS, and so forth, depending on the applied terminology and technology. The network device may further refer to a network function (NF) in the core network, for example, a service management function (SMF) , an access and mobility management function (AMF) , a policy control function (PCF) , a user plane function (UPF) or devices with the same function in future network architectures, and so forth.
[0044] As used herein, the term “user equipment (UE) ” generally refers to any end device that may be capable of wireless communications. By way of example rather than a limitation, a UE may also be referred to as a communication device, a terminal device, an end user device, a subscriber station (SS) , an unmanned aerial vehicle (UAV) , a portable subscriber station, a mobile station (MS) , or an access terminal (AT) . The UE may include, but is not limited to, a mobile phone, a cellular phone, a smart phone, a voice over IP (VoIP) phone, a wireless local loop phone, a tablet, a wearable UE, a personal digital assistant (PDA) , a portable computer, a desktop computer, an image capture UE such as a digital camera, a gaming UE, a music storage and playback appliance, a vehicle-mounted wireless UE, a wireless endpoint, a mobile station, laptop-embedded equipment (LEE) , laptop-mounted equipment (LME) , a USB dongle, a smart device, wireless customer-premises equipment (CPE) , an Internet of Things (loT) device, a watch or other wearable, a head-mounted display (HMD) , a vehicle, a drone, a medical device (for example, a remote surgery device) , an industrial device (for example, a robot and / or other wireless devices operating in an industrial and / or an automated processing chain contexts) , a consumer electronics device, a device operating on commercial and / or industrial wireless networks, and the like. In the following description, the terms: “UE, ” “communication device, ” “terminal, ” and “UE, ” may be used interchangeably.
[0045] Principles and implementations of embodiments of the present disclosure will be described in detail below with reference to the figures.
[0046] FIG. 1A illustrates an example of a wireless communication system (or referred to as a communication network) 100 that supports a PRACH transmission in accordance with aspects of the present disclosure. The wireless communication system 100 may include one or more network entities 102 (also referred to as network equipment) , one or more UEs 104, a core network 106, and a packet data network 108. The wireless communication system 100 may support various radio access technologies. In some implementations, the wireless communication system 100 may be a 4G network, such as an LTE network or an LTE-Advanced (LTE-A) network. In some other implementations, the wireless communication system 100 may be a 5G network, such as an NR network. In other implementations, the wireless communication system 100 may be a combination of a 4G network and a 5G network, or other suitable radio access technology including Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20. The wireless communication system 100 may support radio access technologies beyond 5G. Additionally, the wireless communication system 100 may support technologies, such as time division multiple access (TDMA) , frequency division multiple access (FDMA) , or code division multiple access (CDMA) , etc.
[0047] The one or more network entities 102 may be dispersed throughout a geographic region to form the wireless communication system 100. One or more of the network entities 102 described herein may be or include or may be referred to as a network node, a base station, a network element, a radio access network (RAN) , a base transceiver station, an access point, a NodeB, an eNodeB (eNB) , a next-generation NodeB (gNB) , or other suitable terminology. A network entity 102 and a UE 104 may communicate via a communication link 110, which may be a wireless or wired connection. For example, a network entity 102 and a UE 104 may perform wireless communication (e.g., receive signaling, transmit signaling) over a Uu interface.
[0048] A network entity 102 may provide a geographic coverage area 112 for which the network entity 102 may support services (e.g., voice, video, packet data, messaging, broadcast, etc. ) for one or more UEs 104 within the geographic coverage area 112. For example, a network entity 102 and a UE 104 may support wireless communication of signals related to services (e.g., voice, video, packet data, messaging, broadcast, etc. ) according to one or multiple radio access technologies. In some implementations, a network entity 102 may be moveable, for example, a satellite associated with a non-terrestrial network. In some implementations, different geographic coverage areas 112 associated with the same or different radio access technologies may overlap, but the different geographic coverage areas 112 may be associated with different network entities 102. Information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
[0049] The one or more UEs 104 may be dispersed throughout a geographic region of the wireless communication system 100. A UE 104 may include or may be referred to as a mobile device, a wireless device, a remote device, a remote unit, a handheld device, or a subscriber device, or some other suitable terminology. In some implementations, the UE 104 may be referred to as a unit, a station, a terminal, or a client, among other examples. Additionally, or alternatively, the UE 104 may be referred to as an Internet-of-Things (IoT) device, an Internet-of-Everything (IoE) device, or machine-type communication (MTC) device, among other examples. In some implementations, a UE 104 may be stationary in the wireless communication system 100. In some other implementations, a UE 104 may be mobile in the wireless communication system 100.
[0050] The one or more UEs 104 may be devices in different forms or having different capabilities. Some examples of UEs 104 are illustrated in FIG. 1A. A UE 104 may be capable of communicating with various types of devices, such as the network entities 102, other UEs 104, or network equipment (e.g., the core network 106, the packet data network 108, a relay device, an integrated access and backhaul (IAB) node, or another network equipment) , as shown in FIG. 1A. Additionally, or alternatively, a UE 104 may support communication with other network entities 102 or UEs 104, which may act as relays in the wireless communication system 100.
[0051] A UE 104 may also be able to support wireless communication directly with other UEs 104 over a communication link 114. For example, a UE 104 may support wireless communication directly with another UE 104 over a device-to-device (D2D) communication link. In some implementations, such as vehicle-to-vehicle (V2V) deployments, vehicle-to-everything (V2X) deployments, or cellular-V2X deployments, the communication link 114 may be referred to as a sidelink. For example, a UE 104 may support wireless communication directly with another UE 104 over a PC5 interface.
[0052] A network entity 102 may support communications with the core network 106, or with another network entity 102, or both. For example, a network entity 102 may interface with the core network 106 through one or more backhaul links 116 (e.g., via an S1, N2, N2, or another network interface) . The network entities 102 may communicate with each other over the backhaul links 116 (e.g., via an X2, Xn, or another network interface) . In some implementations, the network entities 102 may communicate with each other directly (e.g., between the network entities 102) . In some other implementations, the network entities 102 may communicate with each other or indirectly (e.g., via the core network 106) . In some implementations, one or more network entities 102 may include subcomponents, such as an access network entity, which may be an example of an access node controller (ANC) . An ANC may communicate with the one or more UEs 104 through one or more other access network transmission entities, which may be referred to as a radio heads, smart radio heads, or transmission-reception points (TRPs) .
[0053] In some implementations, a network entity 102 may be configured in a disaggregated architecture, which may be configured to utilize a protocol stack physically or logically distributed among two or more network entities 102, 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, a network entity 102 may include one or more of a central unit (CU) , a distributed unit (DU) , a radio unit (RU) , a RAN Intelligent Controller (RIC) (e.g., a Near-Real Time RIC (Near-RT RIC) , a Non-Real Time RIC (Non-RT RIC) ) , a Service Management and Orchestration (SMO) system, or any combination thereof.
[0054] An RU may also be referred to as a radio head, a smart radio head, a remote radio head (RRH) , a remote radio unit (RRU) , or a transmission reception point (TRP) . One or more components of the network entities 102 in a disaggregated RAN architecture may be co-located, or one or more components of the network entities 102 may be located in distributed locations (e.g., separate physical locations) . In some implementations, one or more network entities 102 of a disaggregated RAN architecture may be implemented as virtual units (e.g., a virtual CU (VCU) , a virtual DU (VDU) , a virtual RU (VRU) ) .
[0055] Split of functionality between a CU, a DU, and an RU may be flexible and may support different functionalities depending upon which functions (e.g., network layer functions, protocol layer functions, baseband functions, radio frequency functions, and any combinations thereof) are performed at a CU, a DU, or an RU. For example, a functional split of a protocol stack may be employed between a CU and a DU such that the CU may support one or more layers of the protocol stack and the DU may support one or more different layers of the protocol stack. In some implementations, the CU may host upper protocol layer (e.g., a layer 3 (L3) , a layer 2 (L2) ) functionality and signaling (e.g., radio resource control (RRC) , service data adaption protocol (SDAP) , Packet Data Convergence Protocol (PDCP) ) . The CU may be connected to one or more DUs or RUs, and the one or more DUs or RUs may host lower protocol layers, such as a layer 1 (L1) (e.g., physical (PHY) layer) or an L2 (e.g., radio link control (RLC) layer, MAC layer) functionality and signaling, and may each be at least partially controlled by the CU.
[0056] Additionally, or alternatively, a functional split of the protocol stack may be employed between a DU and an RU such that the DU may support one or more layers of the protocol stack and the RU may support one or more different layers of the protocol stack. The DU may support one or multiple different cells (e.g., via one or more RUs) . In some implementations, a functional split between a CU and a DU, or between a DU and an RU may be within a protocol layer (e.g., some functions for a protocol layer may be performed by one of a CU, a DU, or an RU, while other functions of the protocol layer are performed by a different one of the CU, the DU, or the RU) .
[0057] A CU may be functionally split further into CU control plane (CU-CP) and CU user plane (CU-UP) functions. A CU may be connected to one or more DUs via a midhaul communication link (e.g., F1, F1-c, F1-u) , and a DU may be connected to one or more RUs via a fronthaul communication link (e.g., open fronthaul (FH) interface) . In some implementations, a midhaul communication link or a fronthaul communication link may be implemented in accordance with an interface (e.g., a channel) between layers of a protocol stack supported by respective network entities 102 that are in communication via such communication links.
[0058] The core network 106 may support user authentication, access authorization, tracking, connectivity, and other access, routing, or mobility functions. The core network 106 may be an evolved packet core (EPC) , or a 5G core (5GC) , which may include a control plane entity that manages access and mobility (e.g., a mobility management entity (MME) , an access and mobility management functions (AMF) ) and a user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW) , a Packet Data Network (PDN) gateway (P-GW) , or a user plane function (UPF) ) . In some implementations, the control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management (e.g., data bearers, signal bearers, etc. ) for the one or more UEs 104 served by the one or more network entities 102 associated with the core network 106.
[0059] The core network 106 may communicate with the packet data network 108 over one or more backhaul links 116 (e.g., via an S1, N2, N2, or another network interface) . The packet data network 108 may include an application server 118. In some implementations, one or more UEs 104 may communicate with the application server 118. A UE 104 may establish a session (e.g., a protocol data unit (PDU) session, or the like) with the core network 106 via a network entity 102. The core network 106 may route traffic (e.g., control information, data, and the like) between the UE 104 and the application server 118 using the established session (e.g., the established PDU session) . The PDU session may be an example of a logical connection between the UE 104 and the core network 106 (e.g., one or more network functions of the core network 106) .
[0060] In the wireless communication system 100, the network entities 102 and the UEs 104 may use resources of the wireless communication system 100 (e.g., time resources (e.g., symbols, slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers) ) to perform various operations (e.g., wireless communications) . In some implementations, the network entities 102 and the UEs 104 may support different resource structures. For example, the network entities 102 and the UEs 104 may support different frame structures. In some implementations, such as in 4G, the network entities 102 and the UEs 104 may support a single frame structure. In some other implementations, such as in 5G and among other suitable radio access technologies, the network entities 102 and the UEs 104 may support various frame structures (i.e., multiple frame structures) . The network entities 102 and the UEs 104 may support various frame structures based on one or more numerologies.
[0061] One or more numerologies may be supported in the wireless communication system 100, and a numerology may include a subcarrier spacing and a cyclic prefix. A first numerology (e.g., μ=0) may be associated with a first subcarrier spacing (e.g., 15 kHz) and a normal cyclic prefix. In some implementations, the first numerology (e.g., μ=0) associated with the first subcarrier spacing (e.g., 15 kHz) may utilize one slot per subframe. A second numerology (e.g., μ=1) may be associated with a second subcarrier spacing (e.g., 30 kHz) and a normal cyclic prefix. A third numerology (e.g., μ=2) may be associated with a third subcarrier spacing (e.g., 60 kHz) and a normal cyclic prefix or an extended cyclic prefix. A fourth numerology (e.g., μ=3) may be associated with a fourth subcarrier spacing (e.g., 120 kHz) and a normal cyclic prefix. A fifth numerology (e.g., μ=4) may be associated with a fifth subcarrier spacing (e.g., 240 kHz) and a normal cyclic prefix.
[0062] A time interval of a resource (e.g., a communication resource) may be organized according to frames (also referred to as radio frames) . Each frame may have a duration, for example, a 10 millisecond (ms) duration. In some implementations, each frame may include multiple subframes. For example, each frame may include 10 subframes, and each subframe may have a duration, for example, a 1 ms duration. In some implementations, each frame may have the same duration. In some implementations, each subframe of a frame may have the same duration.
[0063] Additionally or alternatively, a time interval of a resource (e.g., a communication resource) may be organized according to slots. For example, a subframe may include a number (e.g., quantity) of slots. The number of slots in each subframe may also depend on the one or more numerologies supported in the wireless communication system 100. For instance, the first, second, third, fourth, and fifth numerologies (i.e., μ=0, μ=1, μ=2, μ=3, μ=4) associated with respective subcarrier spacings of 15 kHz, 30 kHz, 60 kHz, 120 kHz, and 240 kHz may utilize a single slot per subframe, two slots per subframe, four slots per subframe, eight slots per subframe, and 16 slots per subframe, respectively. Each slot may include a number (e.g., quantity) of symbols (e.g., OFDM symbols) . In some implementations, the number (e.g., quantity) of slots for a subframe may depend on a numerology. For a normal cyclic prefix, a slot may include 14 symbols. For an extended cyclic prefix (e.g., applicable for 60 kHz subcarrier spacing) , a slot may include 12 symbols. The relationship between the number of symbols per slot, the number of slots per subframe, and the number of slots per frame for a normal cyclic prefix and an extended cyclic prefix may depend on a numerology. It should be understood that reference to a first numerology (e.g., μ=0) associated with a first subcarrier spacing (e.g., 15 kHz) may be used interchangeably between subframes and slots.
[0064] In the wireless communication system 100, an electromagnetic (EM) spectrum may be split, based on frequency or wavelength, into various classes, frequency bands, frequency channels, etc. By way of example, the wireless communication system 100 may support one or multiple operating frequency bands, such as frequency range designations FR1 (410 MHz –7.125 GHz) , FR2 (24.25 GHz –52.6 GHz) , FR3 (7.125 GHz –24.25 GHz) , FR4 (52.6 GHz –114.25 GHz) , FR4a or FR4-1 (52.6 GHz –71 GHz) , and FR5 (114.25 GHz –300 GHz) . In some implementations, the network entities 102 and the UEs 104 may perform wireless communications over one or more of the operating frequency bands. In some implementations, FR1 may be used by the network entities 102 and the UEs 104, among other equipment or devices for cellular communications traffic (e.g., control information, data) . In some implementations, FR2 may be used by the network entities 102 and the UEs 104, among other equipment or devices for short-range, high data rate capabilities.
[0065] FR1 may be associated with one or multiple numerologies (e.g., at least three numerologies) . For example, FR1 may be associated with a first numerology (e.g., μ=0) , which includes 15 kHz subcarrier spacing; a second numerology (e.g., μ=1) , which includes 30 kHz subcarrier spacing; and a third numerology (e.g., μ=2) , which includes 60 kHz subcarrier spacing. FR2 may be associated with one or multiple numerologies (e.g., at least 2 numerologies) . For example, FR2 may be associated with a third numerology (e.g., μ=2) , which includes 60 kHz subcarrier spacing; and a fourth numerology (e.g., μ=3) , which includes 120 kHz subcarrier spacing.
[0066] In downlink (DL) transmission, multiple PDSCH scheduling may be involved. For example, dynamic scheduling based PDSCH transmission or semi-persistent scheduling (SPS) scheduling based PDSCH transmission may be enabled.
[0067] With dynamic scheduling, when a UE is scheduled to receive a PDSCH by a DCI, the Time domain resource assignment field value m of the DCI provides a row index m + 1 to an allocation table. The indexed row defines the slot offset K0 (which is the number of slots between the slot of the received PDCCH and the slot of PDSCH) , the start and length indicator SLIV, and the PDSCH mapping type to be assumed in the PDSCH reception. The UE may be configured with pdsch-TimeDomainAllocationListForMultiPDSCH-r17 in which one or more rows contain multiple SLIVs for PDSCHs on a DL bandwidth part (BWP) of a serving cell. For the pdsch-TimeDomainAllocationListForMultiPDSCH in pdsch-Config, each PDSCH has a separate SLIV, mapping type, and K0. The number of scheduled PDSCHs is signaled by the number of indicated SLIVs in the row of the pdsch-TimeDomainAllocationListForMultiPDSCH signaled in the DCI format 1_1.
[0068] With SPS, if a UE is configured with the pdsch-TimeDomainAllocationListForMultiPDSCH in which one or more rows contain multiple SLIVs for PDSCHs on a DL BWP of a serving cell, and the UE is indicated re-transmission of a PDSCH corresponding to a DL SPS by the DCI format 1_1, the UE does not expect that the number of indicated SLIVs in the row (s) of the pdsch-TimeDomainAllocationListForMultiPDSCH by the DCI is more than one.
[0069] After receiving the PDSCH transmission, the UE provides HARQ feedback for the PDSCH transmission. In this case, the UE needs to determine a feedback time unit for the HARQ feedback transmission.
[0070] With dynamic scheduling, if the UE detects a DCI format scheduling a number of PDSCH receptions ending in DL slot nD, the UE may provide corresponding HARQ-ACK information in a physical uplink control channel (PUCCH) transmission within uplink (UL) slot n+k (i.e., the time unit used to transmit the HARQ feedback information of the PDSCH) , where n is the last UL slot for the PUCCH transmission that overlaps with slot nD, and k is a number of slots and is indicated by the PDSCH-to-HARQ_feedback timing indicator field in the DCI format mapped to values for a set of a number of slots (named as K1 set) provided by an RRC signalling, if present, or provided by a value configured by an RRC signalling.
[0071] With SPS, the UE may receive an activating DCI to activate an SPS configuration from one or multiple SPS configurations and for each SPS configuration, a period P and n1PUCCH-AN is provided. Also, the DCI may indicate the time domain resource and frequency domain resource of a PDSCH for the activated SPS configuration and provide the K1 value to indicate the slot for PUCCH transmission. Assuming SPS PDSCH receptions end in slot n, then the corresponding HARQ feedback may be transmitted in the PUCCH transmission within slot n+K1.
[0072] After the determination of the feedback time unit, the UE may determine a PUCCH resource to transmit the HARQ feedback according to the number of bits of HARQ feedback to be transmitted in the feedback time unit.
[0073] If a TB includes multiple CBGs, HARQ feedback for each CBG of the multiple CBGs may be supported. If HARQ feedback for all of the CBGs is ACK, but the TB is decoded unsuccessfully, then HARQ feedback for each of the CBGs may be set to NACK.
[0074] If multiple PDSCHs are scheduled by a single DCI, the same K1 may be indicated, and the slot used for the HARQ feedback of multiple PDSCHs may be determined based on the last slot used to transmit the multiple PDSCHs, or in other words, the slot used to transmit the last PDSCH among the multiple PDSCHs. For example, if the last PDSCH is in slot #n, then the HARQ feedback of multiple PDSCHs is in slot n+K1.
[0075] Moreover, as described above, semantic communication is inspired as a brand-new technology in 6G to break out the “Shannon’s trap” . FIG. 1B illustrates an example processing procedure of semantic communication associated with aspects of the present disclosure. The sequential encoder (SC encoder) and the reed-solomon encoder (RS encoder) may be done jointly. The output of a semantic communication encoder includes important information and less important information. For example, multiple TBs for a semantic service may include important TBs and less important TBs, or a TB for a semantic service may include important CBGs and less important CBGs. A main characteristic of semantic communication is that less important information may not affect the semantic understanding of the source even if it is not decoded rightly in the physical layer.
[0076] However, as of now, there is no efficient feedback mechanism considered for the semantic communication. In view of the above, how to enable the HARQ feedback for semantic communication in the physical layer, especially, considering the importance of TBs or CBGs, may need to be discussed. Therefore, there is a need for an efficient solution to support the HARQ feedback, especially, for semantic communication.
[0077] Embodiments of the present disclosure provide a solution to resolve the above issue that occurred in semantic communication, and also in other any type of communication in which a similar issue occurs. In one aspect of the solution of the present disclosure, a UE receives, from a BS, a group of data blocks. A data block of the group of data blocks comprises one of a TB or a CBG. One or more first data blocks of the group of data blocks are associated with a first priority level, and one or more second data blocks of the group of data blocks are associated with a second priority level lower than the first priority level. Moreover, the UE transmits, to the BS, HARQ feedback for the group of data blocks based on a decoding result of the one or more first data blocks.
[0078] By transmitting the HARQ feedback taking the importance differences (i.e., priority differences) of the group of data blocks into account, this solution can improve the flexibility and efficiency of the HARQ feedback for the PDSCH transmission and resource utilization, especially, in semantic communication scenarios. In this way, it is possible to improve the communication performance.
[0079] Reference is now made to FIG. 2, which illustrates an example process flow 200 in accordance with some example embodiments of the present disclosure. For the purpose of discussion, the process 200 will be described with reference to FIG. 1A, and the process 200 may involve a UE 104 and a network entity 102 as shown in FIG. 1A. It is to be understood that the steps and the order of the steps in FIG. 2 are merely for illustration, and not for limitation. It is to be understood that process 200 may further include additional blocks not shown and / or omit some shown blocks, and the scope of the present disclosure is not limited in this regard.
[0080] As shown in FIG. 2, the network entity 102 transmits (205) , to the UE 104, a group of data blocks. A data block of the group of data blocks may comprise a TB or a CBG. For example, the group of data blocks may comprise a group of TBs or a group of CBGs.
[0081] Different data blocks of the group of data blocks may have different priorities or importance. As an example, two priority levels (also referred to as a first priority level and a second priority level) may be considered. The first priority level may correspond to a higher priority level and the second priority level may correspond to a lower priority level. In this case, depending on the priority or importance of a data block of the group of data blocks, this data block may be determined to be associated with the first priority level or the second priority level. As an example, a data block may be determined to be associated with the first priority level if a priority or importance of the data block is higher than a threshold. The threshold may be configured by the network entity 102 or predefined as default in the specification. If a data block is associated with the higher priority level, it may carry important information. According to the priorities or importance of the group of data blocks, as a result, one or more first data blocks of the group of data blocks may be associated with the first priority level, and one or more second data blocks of the group of data blocks may be associated with the second priority level.
[0082] In the embodiments where the group of data blocks comprises a group of TBs, which one or more TBs belong to the same group may be determined in a variety of approaches, as will be discussed below.
[0083] In some implementations, the group of TBs may comprise a plurality of TBs scheduled by a single DCI. In this case, multiple TBs scheduled by a DCI may be determined to be included in the same group. The number of TBs in the group of TBs may be determined based on the number of the start and length indicator SLIV (s) in indicated row (s) of a time domain resource allocation (TDRA) table.
[0084] In some implementations, the group of TBs may comprise a plurality of TBs scheduled by a plurality of DCIs in a time window. In this case, multiple TBs scheduled by multiple DCIs in a time window may be determined to be included in the same group. The number of TBs in the group of TBs may be determined as the number of PDSCHs scheduled by the multiple DCIs. The time window may be configured by the network entity 102 or predefined as default in the specification. For example, every M slots (for example, two slots) may be determined as a time window.
[0085] In some implementations, the group of TBs may comprise a plurality of TBs transmitted in a time window. In this case, multiple TBs transmitted in a time window may be considered to be included in the same group. The number of TBs in the group of TBs may be determined as the number of PDSCHs in the time window. The time window may be configured by the network entity 102 or predefined as default in the specification. For example, every M slots (for example, two slots) may be determined as a time window.
[0086] In some implementations, the group of TBs may comprise a plurality of TBs transmitted in a period of an SPS configuration. In this case, multiple TBs transmitted in a configuration period of an SPS configuration may be considered to be included in the same group. The number of TBs in the group of TBs may be determined based on the number of the start and length indicator SLIV (s) in indicated row (s) of a time domain resource allocation (TDRA) table.
[0087] In some embodiments, to indicate the transmission of the group of TBs considering their priorities or importance (for example, the group of TBs associated with a semantic service) , the following indication approaches may be considered. For example, the DCI may be associated with the first priority level (for example, or associated with a semantic service) . In other words, the DCI may be a special DCI format. As another example, the DCI may be received in a search space associated with the first priority level (for example, or associated with a semantic service) or a CORSET associated with the first priority level (for example, or associated with a semantic service) . In this case, the DCI may be received in a a special search space / CORESET. As a further example, the DCI may comprise an indication indicating that the DCI is associated with the first priority level (for example, or associated with a semantic service) . In this case, as an example implementation, the DCI may have a bit to indicate the DCI is associated with the first priority level (for example, or for semantic scheduling) . As yet a further example, if SPS is used, the SPS configuration may be configured for the first priority level (for example, or for a semantic service) .
[0088] In the embodiments where the group of data blocks comprises a group of CBGs, a plurality of CBGs in a TB may be determined to belong to the same group. The number of the group of CBGs may be determined differently. As an example, the number of the group of CBGs may be determined as the actual number (for example, denoted as M) of CBGs included in a TB. As another example, the number of the group of CBGs may be determined as the configured maximum number (for example, denoted as N) of CBGs included in a TB. In this case, if M<N, there may be one or more virtual CBGs (which are not present in fact) considered in the TB. For example, the configured maximum number of CBGs included in a TB may comprise the maximum number of CBGs per TB as configured by maxCodeBlockGroupsPerTransportBlock for a PDSCH.
[0089] In some implementations, if the UE 104 is configured to receive CBG based transmissions via a higher layer parameter PDSCH-CodeBlockGroupTransmission for a PDSCH, the UE 104 may determine the actual number (i.e., M) of CBGs for a TB reception as M=min (N, C) , where N is the above configured maximum number of CBGs included in a TB, and C is the number of code blocks (CBs) in a TB. As an example implementation, defining M1=mod (C, M) , and the CBG grouping in a TB may be determined as if M1>0, CBG m (m=0, 1, ..., M1-1) may consist of CBs with indices m·K1+k, k=0, 1, ..., K1-1, and CBG m (m=M1, M1+1, ..., M-1) may consist of CBs with indices M1·K1+ (m-M1) ·K2+k, k=0, 1, ..., K2-1. FIG. 3A illustrates an example CBG grouping in accordance with some example embodiments of the present disclosure. As shown in FIG. 3A, CB 1 and CB 2 are grouped as CBG 1, CB3 and one or more other CBs are grouped as CBG 2, and so on.
[0090] In the cases where the one or more first data blocks of the group of data blocks are associated with the first priority level, and the one or more second data blocks of the group of data blocks are associated with the second priority level, how to determine which one or more data blocks are included in the one or more first data blocks (or in other words, associated with the first priority level) may need to be considered. Assuming the number of data blocks in the one or more first data blocks is H, H data blocks among the group of data blocks may be with higher priority, and the remaining data blocks may be with lower priority. For example, the number (i.e., H) of data blocks in the one or more first data blocks may be indicated based on a DCI or an RRC signaling. There may be a plurality of approaches for determining which one or more data blocks of the group of data blocks are associated with the first priority level, as will be discussed below in detail.
[0091] In some implementations, the one or more first data blocks may be determined to comprise first H data blocks among the group of data blocks or last H data blocks among the group of data blocks. For example, the UE 104 may make the above determination based on an indication from the network entity 102. As an implementation, if the group of data blocks comprises P data blocks, H TBSs may comprise first / last H TBs in the time domain among P TBs, or H CBGs may comprise be first / last H CBGs in the time domain among P CBGs. FIG. 3B illustrates example determination of data blocks with the first priority level in accordance with some example embodiments of the present disclosure. As shown in FIG. 3B, the first 2 TBs are with the first priority level, that is, with the higher priority, and the remaining data blocks are with the second priority level, that is, with the lower priority.
[0092] In some implementations, the one or more first data blocks may be determined based on an indication of a bitmap from the network device 102. A respective bit of the bitmap may indicate whether a respective data block of the group of data blocks is with the first priority level. In other words, in this case, if the group of data blocks comprises P data blocks, H TBSs / CBGs among P TBs / CBGs may be indicated based on a P-bit bitmap. FIG. 3C illustrates another example determination of data blocks with the first priority level in accordance with some example embodiments of the present disclosure. As shown in FIG. 3C, based on the bitmap, the first the third TBs are indicated to be with the first priority level (i.e., with the higher priority) , and the remaining data blocks are indicated to be with the second priority level (i.e., with the lower priority) .
[0093] In some implementations where the one or more first data blocks comprise one or more CBGs, the one or more first data blocks may be determined based on an indication of a number of bits with the first priority level in a TB. In this case, H CBGs may be determined by the UE 104 according to the indicated number of higher priority bits. For example, a CBG may be determined to be comprised in the one or more first data blocks if the CBG comprises at least one of the number of bits with the first priority level. As an example implementation, assuming the indicated number of higher priority bits is the first Q bits, there may be C CBs for a TB, all bits or at least one bit of the first W CBs among the C CBs may be higher priority bit (s) , and at least one bit or all bits of the remaining CBs may be lower priority bit (s) . In this case, N CBGs may be determined based on the C CBs. For example, all CBs or at least one CB of the first H CBGs among P CBGs may be from W CBGs, and at least one CB or all CBs of the remaining CBGs may be from the remaining CBs. FIG. 3D illustrates further example determination of data blocks with the first priority level in accordance with some example embodiments of the present disclosure. As shown in FIG. 3D, all bits of CB 1 and CB 2 are important bits (i.e., bits with the higher priority) , some bits of CB3 are important bits and the other bits of CB3 are unimportant bits (i.e., bits with the lower priority) , and all bits of CB C are unimportant bits. CB 1 and CB 2 are grouped as CBG 1, CB 3 and one or more other CBs are grouped as CBG 2, and so on. In this case, for example, CBG 1 and CBG 2 may be determined to be with the first priority level, and remaining CBG M may be determined to be with the second priority level.
[0094] In some embodiments, the one or more first data blocks (i.e., the H data blocks as described above) may be associated with (in other words, use) a first transmission parameter, and the one or more second data blocks (i.e., the remaining data blocks of the group of data blocks other than the H data blocks) may be associated with (in other words, use) a second transmission parameter. For example, the first transmission parameter and / or the second transmission parameter may comprise at least one of an MCS, a frequency domain resource, or an RV. As an example implementation, the one or more first data blocks may use a lower coding rate or more cyclic redundancy check (CRC) bits, and the one or more second data blocks may use a higher coding rate or fewer CRC bits. The first transmission parameter and / or the second transmission parameter may be indicated by the network entity 102 in a variety of ways. As an example, the network entity 102 may transmit an indication of the first transmission parameter to the UE 104, and the second transmission parameter may be determined based on the first transmission parameter. For example, an offset or a scaling factor may be configured by the network entity 102 or predefined for use in determining the second transmission parameter based on the first transmission parameter. As another example, the network entity 102 may transmit an indication of the second transmission parameter to the UE 104, and the first transmission parameter may be determined based on the second transmission parameter. Likewise, for example, an offset or a scaling factor may be configured by the network entity 102 or predefined for use in determining the first transmission parameter based on the second transmission parameter. As another example, the network entity 102 may transmit an indication of both the first transmission parameter and the second transmission parameter to the UE 104. In this case, the first transmission parameter and the second transmission parameter may be indicated by the network entity 102 directly.
[0095] Referring back to FIG. 2, after receiving the group of data blocks, the UE 104 transmits (210) , to the network entity 102, HARQ feedback for the group of data blocks based on a decoding result of the one or more first data blocks. The UE 104 may provide the HARQ feedback for the group of data blocks according to their priorities or importance.
[0096] In some embodiments, HARQ feedback for the group of data blocks may be provided jointly. In this case, the group of data blocks may comprise a group of TBs or group of CBGs. The HARQ feedback for the group of data blocks may be equal to AND (i.e., binary AND operation) of HARQ feedback for the one or more first data blocks, that is, AND of HARQ feedback of all of the one or more first data blocks with the first higher priority level.
[0097] In the cases where the group of data blocks comprises a group of TBs, a time-domain resource for the HARQ feedback for the group of data blocks may be determined based on a time-domain resource for the last data block of the one or more first data blocks. In this case, the slot used to transmit the HARQ feedback for the group of TBs may be determined based on the last TB with the first priority level. FIG. 3E illustrates example HARQ feedback for a group of TBs based on a time-domain resource determined according to a time-domain resource for the last TB with the first priority level. Alternatively or additionally, a time-domain resource for the HARQ feedback for the group of data blocks may be determined based on a time-domain resource for the last data block of the group of data blocks. FIG. 3F illustrates example HARQ feedback for a group of TBs based on a time-domain resource determined according to a time-domain resource for the last TB of the group of TBs.
[0098] In the cases where the group of data blocks comprises a group of CBGs, if the number of the group of CBGs is determined as the configured maximum number of CBGs included in a TB which is larger than the actual number of CBGs included in a TB, one or more virtual CBGs (which are not present in fact) may be considered to be with the second priority level.
[0099] FIG. 3G illustrates example HARQ feedback for a group of CBGs. As shown in FIG. 3G, joint HARQ feedback for CBG 1 and CBG 2 is provided as the HARQ feedback for the group of CBGs. As an example, if the number of the group of CBGs is determined as the configured maximum number of CBGs included in a TB, one of CBG 3 and CBG4 may be a virtual CBG that is not present in fact, and thus may be determined to be with the second priority level.
[0100] In some embodiments, HARQ feedback for the group of data blocks may be provided separately. In this case, the group of data blocks may comprise a group of TBs. The HARQ feedback for the one or more first data blocks may be determined based on the decoding result of the one or more first data blocks. In other words, The HARQ feedback for the one or more first data blocks may be the real HARQ feedback for the one or more first data blocks. The HARQ feedback for each of the one or more second data blocks may be determined in multiple ways. For example, the HARQ feedback for each of the one or more second data blocks may be set to ACK or NACK. As another example, the HARQ feedback for each of the one or more second data blocks may be canceled or may not be needed. In this way, the UE 104 may not need to check the decoding result of unimportant TB (s) / CBG (s) , and also the network entity 102 may not need to retransmit the important TB (s) / CBG (s) even if it is not decoded rightly, which can improve the resource utilization and reduce the latency.
[0101] It is to be understood that although some embodiments of the present disclosure are discussed for semantic communication, embodiments of the present disclosure are also applicable to any other kinds of communications, and the scope of the present disclosure will not be limited in this regard.
[0102] According to some embodiments with reference to FIGS. 2 to 3G, it is allowed to improve the flexibility and efficiency of the HARQ feedback for the PDSCH transmission and resource utilization, especially, in semantic communication scenarios. Thus, it is possible to improve the communication performance.
[0103] FIG. 4 illustrates an example of a device 400 that supports HARQ feedback for the PDSCH transmission in accordance with aspects of the present disclosure. The device 400 may be an example of a UE 104 or a network entity 102 as described herein. The device 400 may support wireless communication with one or more devices in the communication system. The device 400 may include components for bi-directional communications including components for transmitting and receiving communications, such as a processor 402, a memory 404, a transceiver 406, and, optionally, an I / O controller 408. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses) .
[0104] The processor 402, the memory 404, the transceiver 406, or various combinations thereof or various components thereof may be examples of means for performing various aspects of the present disclosure as described herein. For example, the processor 402, the memory 404, the transceiver 406, or various combinations or components thereof may support a method for performing one or more of the operations described herein.
[0105] In some implementations, the processor 402, the memory 404, the transceiver 406, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) . The hardware may include a processor, a digital signal processor (DSP) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure. In some implementations, the processor 402 and the memory 404 coupled with the processor 402 may be configured to perform one or more of the functions described herein (e.g., executing, by the processor 402, instructions stored in the memory 404) .
[0106] For example, the processor 402 may support wireless communication at the device 400 in accordance with examples as disclosed herein. The processor 402 may be configured to operable to support a means for receiving, from a base station (BS) , a group of data blocks, wherein a data block of the group of data blocks comprises one of a transmission block (TB) or a code block group (CBG) , and wherein one or more first data blocks of the group of data blocks are associated with a first priority level, and one or more second data blocks of the group of data blocks are associated with a second priority level lower than the first priority level; and a means for transmitting, to the BS, hybrid automatic repeat request (HARQ) feedback for the group of data blocks based on a decoding result of the one or more first data blocks. The processor 402 may be configured to operable to support a means for transmitting, to a user equipment (UE) , a group of data blocks, wherein a data block of the group of data blocks comprises one of a transmission block (TB) or a code block group (CBG) , and wherein one or more first data blocks of the group of data blocks are associated with a first priority level, and one or more second data blocks of the group of data blocks are associated with a second priority level lower than the first priority level; and a means for receiving, from the UE, hybrid automatic repeat request (HARQ) feedback for the group of data blocks, wherein the HARQ feedback is associated with a decoding result of the one or more first data blocks.
[0107] The processor 402 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof) . In some implementations, the processor 402 may be configured to operate a memory array using a memory controller. In some other implementations, a memory controller may be integrated into the processor 402. The processor 402 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 404) to cause the device 400 to perform various functions of the present disclosure.
[0108] The memory 404 may include random access memory (RAM) and read-only memory (ROM) . The memory 404 may store computer-readable, computer-executable code including instructions that, when executed by the processor 402 cause the device 400 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some implementations, the code may not be directly executable by the processor 402 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some implementations, the memory 404 may include, among other things, a basic I / O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
[0109] The I / O controller 408 may manage input and output signals for the device 400. The I / O controller 408 may also manage peripherals not integrated into the device M02. In some implementations, the I / O controller 408 may represent a physical connection or port to an external peripheral. In some implementations, the I / O controller 408 may utilize an operating system such as or another known operating system. In some implementations, the I / O controller 408 may be implemented as part of a processor, such as the processor 402. In some implementations, a user may interact with the device 400 via the I / O controller 408 or via hardware components controlled by the I / O controller 408.
[0110] In some implementations, the device 400 may include a single antenna 410. However, in some other implementations, the device 400 may have more than one antenna 410 (i.e., multiple antennas) , including multiple antenna panels or antenna arrays, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 406 may communicate bi-directionally, via the one or more antennas 410, wired, or wireless links as described herein. For example, the transceiver 406 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver 406 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 410 for transmission, and to demodulate packets received from the one or more antennas 410. The transceiver 406 may include one or more transmit chains, one or more receive chains, or a combination thereof.
[0111] A transmit chain may be configured to generate and transmit signals (e.g., control information, data, packets) . The transmit chain may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium. The at least one modulator may be configured to support one or more techniques such as amplitude modulation (AM) , frequency modulation (FM) , or digital modulation schemes like phase-shift keying (PSK) or quadrature amplitude modulation (QAM) . The transmit chain may also include at least one power amplifier configured to amplify the modulated signal to an appropriate power level suitable for transmission over the wireless medium. The transmit chain may also include one or more antennas 410 for transmitting the amplified signal into the air or wireless medium.
[0112] A receive chain may be configured to receive signals (e.g., control information, data, packets) over a wireless medium. For example, the receive chain may include one or more antennas 410 for receive the signal over the air or wireless medium. The receive chain may include at least one amplifier (e.g., a low-noise amplifier (LNA) ) configured to amplify the received signal. The receive chain may include at least one demodulator configured to demodulate the receive signal and obtain the transmitted data by reversing the modulation technique applied during transmission of the signal. The receive chain may include at least one decoder for decoding the processing the demodulated signal to receive the transmitted data.
[0113] FIG. 5 illustrates an example of a processor 500 that supports HARQ feedback for the PDSCH transmission in accordance with aspects of the present disclosure. The processor 500 may be an example of a processor configured to perform various operations in accordance with examples as described herein. The processor 500 may include a controller 502 configured to perform various operations in accordance with examples as described herein. The processor 500 may optionally include at least one memory 504, such as L1 / L2 / L3 cache. Additionally, or alternatively, the processor 500 may optionally include one or more arithmetic-logic units (ALUs) 506. One or more of these components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses) .
[0114] The processor 500 may be a processor chipset and include a protocol stack (e.g., a software stack) executed by the processor chipset to perform various operations (e.g., receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) in accordance with examples as described herein. The processor chipset may include one or more cores, one or more caches (e.g., memory local to or included in the processor chipset (e.g., the processor 500) or other memory (e.g., random access memory (RAM) , read-only memory (ROM) , dynamic RAM (DRAM) , synchronous dynamic RAM (SDRAM) , static RAM (SRAM) , ferroelectric RAM (FeRAM) , magnetic RAM (MRAM) , resistive RAM (RRAM) , flash memory, phase change memory (PCM) , and others) .
[0115] The controller 502 may be configured to manage and coordinate various operations (e.g., signaling, receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) of the processor 500 to cause the processor 500 to support various operations in accordance with examples as described herein. For example, the controller 502 may operate as a control unit of the processor 500, generating control signals that manage the operation of various components of the processor 500. These control signals include enabling or disabling functional units, selecting data paths, initiating memory access, and coordinating timing of operations.
[0116] The controller 502 may be configured to fetch (e.g., obtain, retrieve, receive) instructions from the memory 504 and determine subsequent instruction (s) to be executed to cause the processor 500 to support various operations in accordance with examples as described herein. The controller 502 may be configured to track memory address of instructions associated with the memory 504. The controller 502 may be configured to decode instructions to determine the operation to be performed and the operands involved. For example, the controller 502 may be configured to interpret the instruction and determine control signals to be output to other components of the processor 500 to cause the processor 500 to support various operations in accordance with examples as described herein. Additionally, or alternatively, the controller 502 may be configured to manage flow of data within the processor 500. The controller 502 may be configured to control transfer of data between registers, arithmetic logic units (ALUs) , and other functional units of the processor 500.
[0117] The memory 504 may include one or more caches (e.g., memory local to or included in the processor 500 or other memory, such RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc. In some implementations, the memory 504 may reside within or on a processor chipset (e.g., local to the processor 500) . In some other implementations, the memory 504 may reside external to the processor chipset (e.g., remote to the processor 500) .
[0118] The memory 504 may store computer-readable, computer-executable code including instructions that, when executed by the processor 500, cause the processor 500 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. The controller 502 and / or the processor 500 may be configured to execute computer-readable instructions stored in the memory 504 to cause the processor 500 to perform various functions. For example, the processor 500 and / or the controller 502 may be coupled with or to the memory 504, and the processor 500, the controller 502, and the memory 504 may be configured to perform various functions described herein. In some examples, the processor 500 may include multiple processors and the memory 504 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions herein.
[0119] The one or more ALUs 506 may be configured to support various operations in accordance with examples as described herein. In some implementations, the one or more ALUs 506 may reside within or on a processor chipset (e.g., the processor 500) . In some other implementations, the one or more ALUs 506 may reside external to the processor chipset (e.g., the processor 500) . One or more ALUs 506 may perform one or more computations such as addition, subtraction, multiplication, and division on data. For example, one or more ALUs 506 may receive input operands and an operation code, which determines an operation to be executed. One or more ALUs 506 be configured with a variety of logical and arithmetic circuits, including adders, subtractors, shifters, and logic gates, to process and manipulate the data according to the operation. Additionally, or alternatively, the one or more ALUs 506 may support logical operations such as AND, OR, exclusive-OR (XOR) , not-OR (NOR) , and not-AND (NAND) , enabling the one or more ALUs 506 to handle conditional operations, comparisons, and bitwise operations.
[0120] The processor 500 may support wireless communication in accordance with examples as disclosed herein. The processor 500 may be configured to or operable to support a means for receiving, from a base station (BS) , a group of data blocks, wherein a data block of the group of data blocks comprises one of a transmission block (TB) or a code block group (CBG) , and wherein one or more first data blocks of the group of data blocks are associated with a first priority level, and one or more second data blocks of the group of data blocks are associated with a second priority level lower than the first priority level; and a means for transmitting, to the BS, hybrid automatic repeat request (HARQ) feedback for the group of data blocks based on a decoding result of the one or more first data blocks. The processor 500 may be configured to or operable to support a means for transmitting, to a user equipment (UE) , a group of data blocks, wherein a data block of the group of data blocks comprises one of a transmission block (TB) or a code block group (CBG) , and wherein one or more first data blocks of the group of data blocks are associated with a first priority level, and one or more second data blocks of the group of data blocks are associated with a second priority level lower than the first priority level; and a means for receiving, from the UE, hybrid automatic repeat request (HARQ) feedback for the group of data blocks, wherein the HARQ feedback is associated with a decoding result of the one or more first data blocks.
[0121] FIG. 6 illustrates a flowchart of a method 600 that supports HARQ feedback for the PDSCH transmission in accordance with aspects of the present disclosure. The operations of the method 600 may be implemented by a device or its components as described herein. For example, the operations of the method 600 may be performed by a UE 104 as described herein. In some implementations, the device may execute a set of instructions to control the function elements of the device to perform the described functions. Additionally, or alternatively, the device may perform aspects of the described functions using special-purpose hardware.
[0122] At 610, the method may include receiving, from a base station (BS) , a group of data blocks, wherein a data block of the group of data blocks comprises one of a transmission block (TB) or a code block group (CBG) , and wherein one or more first data blocks of the group of data blocks are associated with a first priority level, and one or more second data blocks of the group of data blocks are associated with a second priority level lower than the first priority level. The operations of 610 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 610 may be performed by a UE 104 as described with reference to FIG. 1A.
[0123] At 620, the method may include transmitting, to the BS, hybrid automatic repeat request (HARQ) feedback for the group of data blocks based on a decoding result of the one or more first data blocks. The operations of 620 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 620 may be performed by a UE 104 as described with reference to FIG. 1A.
[0124] FIG. 7 illustrates a flowchart of a method 700 that supports HARQ feedback for the PDSCH transmission in accordance with aspects of the present disclosure. The operations of the method 700 may be implemented by a device or its components as described herein. For example, the operations of the method 700 may be performed by a network entity 102 as described herein. In some implementations, the device may execute a set of instructions to control the function elements of the device to perform the described functions. Additionally, or alternatively, the device may perform aspects of the described functions using special-purpose hardware.
[0125] At 710, the method may include transmitting, to a user equipment (UE) , a group of data blocks, wherein a data block of the group of data blocks comprises one of a transmission block (TB) or a code block group (CBG) , and wherein one or more first data blocks of the group of data blocks are associated with a first priority level, and one or more second data blocks of the group of data blocks are associated with a second priority level lower than the first priority level. The operations of 710 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 710 may be performed by a network entity 102 as described with reference to FIG. 1A.
[0126] At 720, the method may include receiving, from the UE, hybrid automatic repeat request (HARQ) feedback for the group of data blocks, wherein the HARQ feedback is associated with a decoding result of the one or more first data blocks. The operations of 720 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 720 may be performed by a network entity 102 as described with reference to FIG. 1A.
[0127] It should be noted that the methods described herein describe possible implementations, and that the operations and the steps may be rearranged or otherwise modified and that other implementations are possible. Further, aspects from two or more of the methods may be combined.
[0128] The various illustrative blocks and components described in connection with the disclosure herein may be implemented or performed with a general-purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
[0129] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
[0130] Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer. By way of example, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM) , flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor.
[0131] As used herein, including in the claims, an article “a” before an element is unrestricted and understood to refer to “at least one” of those elements or “one or more” of those elements. The terms “a, ” “at least one, ” “one or more, ” and “at least one of one or more” may be interchangeable. As used herein, including in the claims, “or” as used in a list of items (e.g., a list of items prefaced by a phrase such as “at least one of” or “one or more of” or “one or both of” ) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C) . Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on. Further, as used herein, including in the claims, a “set” may include one or more elements.
[0132] The description herein is provided to enable a person having ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person having ordinary skill in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.
Claims
1.A user equipment (UE) comprising:at least one memory; andat least one processor coupled with the at least one memory and configured to cause the UE to:receive, from a base station (BS) , a group of data blocks, wherein a data block of the group of data blocks comprises one of a transmission block (TB) or a code block group (CBG) , and wherein one or more first data blocks of the group of data blocks are associated with a first priority level, and one or more second data blocks of the group of data blocks are associated with a second priority level lower than the first priority level; andtransmit, to the BS, hybrid automatic repeat request (HARQ) feedback for the group of data blocks based on a decoding result of the one or more first data blocks.2.The UE of claim 1, wherein the group of data blocks comprises a group of TBs, and the group of TBs comprises one of the following:a plurality of TBs scheduled by single downlink control information (DCI) ;a plurality of TBs scheduled by a plurality of DCIs in a time window;a plurality of TBs transmitted in a time window; ora plurality of TBs transmitted in a period of a semi-persistent scheduling (SPS) configuration.3.The UE of claim 2, wherein one of the following:the DCI is associated with the first priority level;the DCI is received in a search space associated with the first priority level or a control resource set (CORSET) associated with the first priority level;the DCI comprises an indication indicating that the DCI is associated with the first priority level; orthe SPS configuration is configured for the first priority level.4.The UE of claim 1, wherein the group of data blocks comprises a group of CBGs, and a number of the group of CBGs comprises one of the following:a configured maximum number of CBGs in a TB; oran actual number of CBGs included in a TB.5.The UE of claim 1, wherein a data block of the group of data blocks is determined to be associated with the first priority level if a priority or importance of the data block is higher than a threshold.6.The UE of claim 1, wherein a number of data blocks in the one or more first data blocks is indicated based on a DCI or a radio resource control (RRC) signaling.7.The UE of claim 6, wherein one of the following:the number of data blocks in the one or more first data blocks is H, and the one or more first data blocks are first H data blocks among the group of data blocks or last H data blocks among the group of data blocks; orthe one or more first data blocks are determined based on an indication of a bitmap, wherein a respective bit of the bitmap indicates whether a respective data block of the group of data blocks is with the first priority level;the one or more first data blocks comprise one or more CBGs, and the one or more first data blocks are determined based on an indication of a number of bits with the first priority level in a TB; orthe one or more first data blocks comprise one or more CBGs, and the one or more first data blocks are determined based on an indication of a number of bits with the first priority level in a TB, and wherein a CBG is determined to be comprised in the one or more first data blocks if the CBG comprises at least one of the number of bits with the first priority level.8.The UE of claim 1, wherein:the one or more first data blocks are associated with a first transmission parameter, and the one or more second data blocks are associated with a second transmission parameter, andthe first transmission parameter or the second transmission parameter comprises at least one of the following: a modulation and coding scheme (MCS) , a frequency domain resource, or a redundancy version (RV) .9.The UE of claim 8, wherein the at least one processor is further configured to cause the UE to:receive, from the BS, one of the following:an indication of the first transmission parameter, and the second transmission parameter is determined based on the first transmission parameter;an indication of the second transmission parameter, and the first transmission parameter is determined based on the second transmission parameter; oran indication of both the first transmission parameter and the second transmission parameter.10.The UE of claim 1, wherein one of the following:the HARQ feedback for the group of data blocks is equal to AND of HARQ feedback for the one or more first data blocks; orthe HARQ feedback for the one or more first data blocks is based on the decoding result of the one or more first data blocks, and wherein HARQ feedback for each of the one or more second data blocks is set to acknowledgment (ACK) or non-acknowledgment (NACK) , or canceled or not needed.11.The UE of claim 1, wherein the group of data blocks comprises a group of TBs, and a time-domain resource for the HARQ feedback is determined based on a time-domain resource for a last data block of the one or more first data blocks.12.A base station (BS) comprising:at least one memory; andat least one processor coupled with the at least one memory and configured to cause the BS to:transmit, to a user equipment (UE) , a group of data blocks, wherein a data block of the group of data blocks comprises one of a transmission block (TB) or a code block group (CBG) , and wherein one or more first data blocks of the group of data blocks are associated with a first priority level, and one or more second data blocks of the group of data blocks are associated with a second priority level lower than the first priority level; andreceive, from the UE, hybrid automatic repeat request (HARQ) feedback for the group of data blocks, wherein the HARQ feedback is associated with a decoding result of the one or more first data blocks.13.The BS of claim 12, wherein the group of data blocks comprises a group of TBs, and the group of TBs comprises one of the following:a plurality of TBs scheduled by single downlink control information (DCI) ;a plurality of TBs scheduled by a plurality of DCIs in a time window;a plurality of TBs transmitted in a time window; ora plurality of TBs transmitted in a period of a semi-persistent scheduling (SPS) configuration.14.The BS of claim 13, wherein one of the following:the DCI is associated with the first priority level;the DCI is received in a search space associated with the first priority level or a control resource set (CORSET) associated with the first priority level;the DCI comprises an indication indicating that the DCI is associated with the first priority level; orthe SPS configuration is configured for the first priority level.15.The BS of claim 12, wherein the group of data blocks comprises a group of CBGs, and a number of the group of CBGs comprises one of the following:a configured maximum number of CBGs in a TB; oran actual number of CBGs included in a TB.16.The BS of claim 12, wherein a data block of the group of data blocks is determined to be associated with the first priority level if a priority or importance of the data block is higher than a threshold.17.The BS of claim 12, wherein a number of data blocks in the one or more first data blocks is indicated based on a DCI or a radio resource control (RRC) signaling.18.The BS of claim 17, wherein one of the following:the number of data blocks in the one or more first data blocks is H, and the one or more first data blocks are first H data blocks among the group of data blocks or last H data blocks among the group of data blocks; orthe one or more first data blocks are determined based on an indication of a bitmap, wherein a respective bit of the bitmap indicates whether a respective data block of the group of data blocks is with the first priority level;the one or more first data blocks comprise one or more CBGs, and the one or more first data blocks are determined based on an indication of a number of bits with the first priority level in a TB; orthe one or more first data blocks comprise one or more CBGs, and the one or more first data blocks are determined based on an indication of a number of bits with the first priority level in a TB, and wherein a CBG is determined to be comprised in the one or more first data blocks if the CBG comprises at least one of the number of bits with the first priority level.19.A processor for wireless communication, comprising:at least one controller coupled with at least one memory and configured to cause the processor to:receive, from a base station (BS) , a group of data blocks, wherein a data block of the group of data blocks comprises one of a transmission block (TB) or a code block group (CBG) , and wherein one or more first data blocks of the group of data blocks are associated with a first priority level, and one or more second data blocks of the group of data blocks are associated with a second priority level lower than the first priority level; andtransmit, to the BS, hybrid automatic repeat request (HARQ) feedback for the group of data blocks based on a decoding result of the one or more first data blocks.20.A method performed by a user equipment (UE) , the method comprising:receiving, from a base station (BS) , a group of data blocks, wherein a data block of the group of data blocks comprises one of a transmission block (TB) or a code block group (CBG) , and wherein one or more first data blocks of the group of data blocks are associated with a first priority level, and one or more second data blocks of the group of data blocks are associated with a second priority level lower than the first priority level; andtransmitting, to the BS, hybrid automatic repeat request (HARQ) feedback for the group of data blocks based on a decoding result of the one or more first data blocks.