Semi-persistent scheduling opportunities for jittery periodic traffic

Abstract

Provided are a method, computer-readable medium, and apparatus for wireless communication at a user equipment (UE) and a base station. The UE receives a configuration for multiple semi-persistent scheduling (SPS) opportunities, each SPS opportunity including multiple opportunities for downlink transmission by the base station. The UE monitors downlink transmissions during one or more opportunities of the SPS opportunity. The base station sends a packet to the UE in the opportunity of the SPS opportunity based on the arrival time of the packet. In various configurations, the base station may send first information via a first communication opportunity of the same SPS opportunity and send second information via a second communication opportunity of the same SPS opportunity. A wireless communication device may monitor all communication opportunities of the SPS opportunity to decode information sent in two or more communication opportunities of the communication opportunity of the SPS opportunity.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit and priority of PCT international application serial number PCT / CN2020 / 088538, entitled “Semi-Persistent Scheduling Opportunities For Jittered Periodic Traffic,” filed with the National Intellectual Property Administration of China on May 1, 2020, and PCT international application serial number PCT / CN2020 / 088659, entitled “Multiple Communication Opportunities For Semi-Persistent Scheduling Occasion,” filed with the National Intellectual Property Administration of China on May 6, 2020, the disclosures of which are expressly incorporated herein by reference. Technical Field

[0003] The present disclosure relates generally to communication systems, and more particularly to wireless communications including semi-persistent scheduling (SPS). Background Art

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources. Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems.

[0005] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at municipal, national, regional, and even global scales. An exemplary telecommunication standard is 5G New Radio (NR). 5G NR is a continuous mobile broadband evolution promulgated by the Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., leveraging the Internet of Things (IoT)), and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine type communications (mMTC), and ultra-reliable low latency communications (URLLC). Some aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard. There is a need to further improve 5G NR technology. These improvements may also be applicable to other multiple access technologies and the telecommunication standards that use these technologies. Summary of the Invention

[0006] The following provides a simplified summary of one or more aspects in order to provide a basic understanding of these aspects. This summary is not an exhaustive overview of all contemplated aspects and is neither intended to identify key or critical elements of all aspects nor to delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.

[0007] In one aspect of the present disclosure, a method, computer-readable medium, and apparatus for wireless communication at a user equipment (UE) are provided. The apparatus receives a configuration for a plurality of semi-persistent scheduling (SPS) opportunities, each SPS opportunity comprising a plurality of opportunities for downlink transmissions by a base station. The UE monitors downlink transmissions during one or more of the SPS opportunities.

[0008] In another aspect of the present disclosure, a method, computer-readable medium, and apparatus for wireless communication at a base station are provided. The apparatus configures a UE for multiple SPS opportunities, each SPS opportunity comprising multiple opportunities for downlink transmission by the base station. The apparatus transmits packets to the UE in the SPS opportunities based on the arrival time of the packets.

[0009] Various aspects of the present disclosure relate to transmitting information via multiple communication opportunities of a semi-persistent scheduling (SPS) opportunity. For example, a base station may transmit first information via a first communication opportunity of an SPS opportunity and transmit second information via a second communication opportunity of the same SPS opportunity. In addition, a wireless communication device may monitor all communication opportunities of an SPS opportunity to decode information transmitted in two or more of the communication opportunities of the SPS opportunity.

[0010] In another aspect of the present disclosure, a method for wireless communication at a wireless communication device may include receiving a message from a base station. The message may indicate the periodicity between configured semi-persistent scheduling (SPS) opportunities. The method may also include receiving a transmission from the base station for a first SPS opportunity among the SPS opportunities. The first SPS opportunity may include multiple communication opportunities. The method may also include decoding downlink information included in at least two of the multiple communication opportunities.

[0011] In another aspect of the present disclosure, a wireless communication device may include a transceiver, a memory, and a processor communicatively coupled to the transceiver and the memory. The processor and the memory may be configured to receive a message from a base station via the transceiver. The message may indicate the periodicity between SPS opportunities for a configured semi-persistent scheduling (SPS). The processor and the memory may also be configured to receive a transmission for a first SPS opportunity in an SPS opportunity from the base station via the transceiver. The first SPS opportunity may include multiple communication opportunities. The processor and the memory may further be configured to decode downlink information included in at least two of the multiple communication opportunities.

[0012] In another aspect of the present disclosure, a wireless communication device may include a component for receiving a message from a base station. The message may indicate the periodicity between configured semi-persistent scheduling (SPS) SPS opportunities. The receiving component may be configured to receive a transmission for a first SPS opportunity among the SPS opportunities. The first SPS opportunity may include multiple communication opportunities. The wireless communication device may also include a component for decoding downlink information included in at least two of the multiple communication opportunities.

[0013] In another aspect of the present disclosure, an article of manufacture for use with a wireless communication device includes a computer-readable medium having instructions stored therein, the instructions being executable by one or more processors of the wireless communication device to receive a message from a base station. The message may indicate the periodicity between SPS opportunities for a configured semi-persistent scheduling (SPS). The computer-readable medium may also have instructions stored therein, the instructions being executable by one or more processors of the wireless communication device to receive a transmission of a first SPS opportunity from a base station. The first SPS opportunity may include multiple communication opportunities. The computer-readable medium may have additional instructions stored therein, the instructions being executable by one or more processors of the wireless communication device to decode downlink information included in at least two of the multiple communication opportunities.

[0014] In another aspect of the present disclosure, a method for wireless communication at a base station may include generating a message indicating periodicity between configured semi-persistent scheduling (SPS) opportunities; sending the message to a wireless communication device; and sending a transmission to the wireless communication device for a first one of the SPS opportunities. The first SPS opportunity may include multiple communication opportunities. At least two of the multiple communication opportunities may include downlink information.

[0015] In another aspect of the present disclosure, a base station may include a transceiver, a memory, and a processor communicatively coupled to the transceiver and the memory. The processor and the memory may be configured to generate a message indicating the periodicity between configured semi-persistent scheduling (SPS) opportunities; send the message to a wireless communication device via the transceiver; and send a transmission for a first SPS opportunity among the SPS opportunities to the wireless communication device via the transceiver. The first SPS opportunity may include multiple communication opportunities. At least two of the multiple communication opportunities may include downlink information.

[0016] In another aspect of the present disclosure, a base station may include means for generating a message indicating periodicity between configured semi-persistent scheduling (SPS) SPS opportunities; and means for transmitting the message to a wireless communication device. The means for transmitting may be configured to transmit a transmission for a first SPS opportunity among the SPS opportunities. The first SPS opportunity may include multiple communication opportunities. At least two of the multiple communication opportunities may include downlink information.

[0017] In another aspect of the present disclosure, an article of manufacture for use with a base station includes a computer-readable medium having instructions stored therein, the instructions executable by one or more processors of the base station to generate a message indicating the periodicity between configured semi-persistent scheduling (SPS) opportunities; send the message to a wireless communication device; and send a transmission to the wireless communication device for a first one of the SPS opportunities. The first SPS opportunity may include a plurality of communication opportunities. At least two of the plurality of communication opportunities may include downlink information.

[0018] To accomplish the foregoing and related ends, one or more aspects comprise the features hereinafter fully described and particularly pointed out in the claims. The following description and the accompanying drawings set forth in detail certain illustrative features of one or more aspects. However, these features are indicative of but a few of the various ways in which the principles of the various aspects may be employed, and this description is intended to include all such aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a diagram illustrating an example of a wireless communication system and access network in accordance with various aspects presented herein.

[0020] Figure 2A 、 Figure 2B 、 Figure 2C and Figure 2D Figures showing examples of a first 5G / NR frame, DL channels within a 5G / NR subframe, a second 5G / NR frame, and UL channels within a 5G / NR subframe, respectively.

[0021] Figure 3 is a diagram illustrating an example of a base station and a user equipment (UE) in an access network.

[0022] Figure 4 Exemplary aspects of a jitter periodic service are shown.

[0023] Figure 5 An example of SPS timing for jittered periodic traffic is shown.

[0024] Figure 6 SPS opportunities for multiple Hybrid Automatic Repeat Request (HARQ) processes for jittered periodic traffic are shown.

[0025] Figure 7 An example of SPS opportunities for a single HARQ process including multiple opportunities is shown in accordance with various aspects presented herein.

[0026] Figure 8 An example of SPS opportunities for a single HARQ process including multiple opportunities and exemplary resources for feedback is shown in accordance with various aspects presented herein.

[0027] Figure 9 An example of SPS opportunities for a single HARQ process including multiple opportunities and exemplary resources for feedback is shown in accordance with various aspects presented herein.

[0028] Figure 10 An example of SPS opportunities for a single HARQ process including multiple opportunities and exemplary resources for feedback is shown in accordance with various aspects presented herein.

[0029] Figure 11 An example of SPS opportunities for a single HARQ process including multiple opportunities and exemplary resources for feedback is shown in accordance with various aspects presented herein.

[0030] Figure 12 An example of SPS opportunities for a single HARQ process including multiple opportunities and exemplary resources for feedback is shown in accordance with various aspects presented herein.

[0031] Figure 13 An example of SPS opportunities for a single HARQ process including multiple opportunities and exemplary resources for feedback is shown in accordance with various aspects presented herein.

[0032] Figure 14 An example of SPS opportunities for a single HARQ process including multiple opportunities and exemplary resources for feedback is shown in accordance with various aspects presented herein.

[0033] Figure 15An example of SPS opportunities for a single HARQ process is shown, including multiple opportunities and exemplary aspects to schedule retransmissions in accordance with various aspects presented herein.

[0034] Figure 16 is a flow chart of a method of wireless communication at a UE according to various aspects presented herein.

[0035] Figure 17 is a flow chart of a method of wireless communication at a base station according to various aspects presented herein.

[0036] Figure 18 is a schematic diagram of a wireless communication system according to some aspects of the present disclosure.

[0037] Figure 19 is a conceptual illustration of an example of a radio access network (RAN) according to some aspects of the present disclosure.

[0038] Figure 20 is a diagram illustrating wireless resources in an air interface utilizing orthogonal frequency division multiplexing (OFDM) according to some aspects of the present disclosure.

[0039] Figure 21 is a conceptual illustration of an example of multiple communication opportunities for a semi-persistent scheduling (SPS) opportunity in accordance with aspects of the present disclosure.

[0040] Figure 22 is a conceptual illustration of an example of multiple communication opportunities and communication sub-opportunities of an SPS opportunity in accordance with aspects of the present disclosure.

[0041] Figure 23 is a conceptual illustration of an example of a hybrid automatic repeat request (HARQ) process for multiple communication opportunities for an SPS opportunity, according to aspects of the present disclosure.

[0042] Figure 24 is a conceptual illustration of an example of downlink control information (DCI) for multiple communication opportunities for activating / reactivating SPS opportunities according to some aspects of the present disclosure.

[0043] Figure 25 is a conceptual illustration of an example of HARQ feedback and HARQ retransmission scheduling for multiple communication opportunities in an SPS opportunity, according to aspects of the present disclosure.

[0044] Figure 26 is a conceptual illustration of an example of a HARQ process for a multi-slot communication opportunity covering an SPS opportunity, according to some aspects of the present disclosure.

[0045] Figure 27is a conceptual illustration of an example of different communication opportunities for transmitting SPS opportunities via different radio frequency (RF) bands, according to some aspects of the present disclosure.

[0046] Figure 28 is a conceptual illustration of an example of different communication opportunities for transmitting SPS opportunities via different RF beams in accordance with aspects of the present disclosure.

[0047] Figure 29 is a signaling diagram illustrating SPS communications according to some aspects of the present disclosure.

[0048] Figure 30 is a block diagram conceptually illustrating an example of a hardware implementation for a wireless communication device employing a processing system according to some aspects of the present disclosure.

[0049] Figure 31 is a flow chart illustrating an example wireless communication process for SPS communications according to some aspects of the present disclosure.

[0050] Figure 32 is a block diagram conceptually illustrating an example of a hardware implementation for a base station employing a processing system according to some aspects of the present disclosure.

[0051] Figure 33 is a flow chart illustrating an example wireless communication process for SPS communications according to some aspects of the present disclosure. DETAILED DESCRIPTION

[0052] The detailed description set forth below, in conjunction with the accompanying drawings, is intended to serve as a description of various configurations and is not intended to represent the only configuration in which the concepts described herein may be practiced. The detailed description includes specific details for the purpose of providing a thorough understanding of the various concepts. However, it will be understood by those skilled in the art that these concepts may be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form to avoid obscuring such concepts.

[0053] Several aspects of telecommunications systems will now be presented with reference to various apparatuses and methods. These apparatuses and methods will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively, "elements"). These elements may be implemented using electronic hardware, computer software, or any combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and design constraints imposed on the overall system.

[0054] For example, an element or any part of an element or any combination of elements can be implemented as a "processing system" including one or more processors. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, systems on a chip (SoCs), baseband processors, field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functionalities described throughout this disclosure. One or more processors in a processing system can execute software. Software should be broadly interpreted to mean instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, processes, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description languages, or other.

[0055] Therefore, in one or more exemplary embodiments, the functions described can be implemented in hardware, software, or any combination thereof. If implemented in software, the functions can be stored as one or more instructions or codes on a computer-readable medium or encoded as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media. Storage media can be any available medium that can be accessed by a computer. As an example and not limitation, this computer-readable medium can include a random access memory (RAM), a read-only memory (ROM), an electrically erasable programmable ROM (EEPROM), an optical disk storage device, a magnetic disk storage device, other magnetic storage devices, a combination of the above-mentioned types of computer-readable media, or any other medium that can be used to store computer-executable code in the form of instructions or data structures that can be accessed by a computer.

[0056] Although aspects and embodiments are described in this application by showing some examples, it will be understood by those skilled in the art that additional implementations and use cases can be implemented in many different arrangements and scenarios. The innovations described herein can be implemented across many different platform types, devices, systems, shapes, sizes, and packaging arrangements. For example, embodiments and / or uses can be implemented via integrated chip embodiments and other devices based on non-module components (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / purchase equipment, medical devices, AI-enabled devices, etc.). Although some examples may or may not be specifically targeted at use cases or applications, various applicability of the above-mentioned innovations may occur. The scope of implementation can range from chip-level or modular components to non-modular, non-chip-level implementations and further to aggregated, distributed, or OEM devices or systems that incorporate one or more aspects of the described innovations. In some actual settings, the devices incorporating the described aspects and features may also have to include additional components and features for implementing and practicing the claimed and described embodiments. For example, the transmission and reception of wireless signals must include many components for both analog and digital purposes (e.g., hardware components including antennas, RF chains, power amplifiers, modulators, buffers, processor(s), interleavers, adders / summers, etc.) It is intended that the innovations described herein can be practiced in devices of various sizes, shapes, and configurations, chip-level components, systems, distributed arrangements, end-user devices, etc.

[0057] The various concepts presented throughout this disclosure may be implemented across a wide variety of telecommunication systems, network architectures, and communication standards.The following description provides illustrative examples of various aspects of the disclosure and is not limiting.

[0058] Figure 1 is a diagram illustrating an example of a wireless communication system and access network 100. Downlink packets may arrive at a base station 102 or 180 in a periodic manner, and SPS resources may be provided for transmission of the downlink packets to a UE 104. In some examples, the downlink traffic may have jittery arrivals. Various aspects presented herein provide SPS resources that enable periodic transmission of downlink packets to be sent to a UE 104 that may experience jittery arrivals at the base station 102 or 180. Various aspects presented herein may enable low-latency downlink traffic to be delivered to a UE 104 in a manner that balances communication latency with efficient scheduling of resources and reduces processing complexity for the UE. As combined Figures 7 to 17Presented in more detail, the base station 102 or 180 may include an SPS scheduling component 199 that configures the UE 104 to monitor multiple SPS opportunities, each SPS opportunity including multiple opportunities for downlink transmission by the base station 102 or 180. The base station 102 or 180 may then send packets to the UE 104 in the opportunities of the SPS opportunities based on the arrival time of the packets. The UE 104 may include an SPS component 198 that receives a configuration of multiple SPS opportunities from the base station 102 or 180, each SPS opportunity including multiple opportunities for downlink transmission by the base station 102 or 180. The UE 104 may then monitor downlink transmissions during one or more opportunities of the SPS opportunities, for example, until the UE receives an opportunity for (one or more) downlink packets. Although the following description may focus on 5G NR, the concepts described herein may be applicable to other similar areas, such as LTE, LTE-A, CDMA, GSM, and other wireless technologies.

[0059] The wireless communication system (also known as a wireless wide area network (WWAN)) includes a base station 102, a UE 104, an evolved packet core (EPC) 160, and another core network 190 (e.g., a 5G core (5GC)). The base station 102 may include a macro cell (a high-power cellular base station) and / or a small cell (a low-power cellular base station). A macro cell includes a base station. A small cell includes a femto cell, a pico cell, and a micro cell.

[0060] A base station 102 configured for 4G LTE (collectively referred to as the Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) may interface with the EPC 160 via a backhaul link 132 (e.g., an S1 interface). A base station 102 configured for 5G NR (collectively referred to as the Next Generation RAN (NG RAN)) may interface with the core network 190 via a backhaul link 184. The base station 102 may perform one or more of the following functions, among other things: delivering user data, radio channel encryption and decryption, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection establishment and release, load balancing, distribution of non-access stratum (NAS) messages, NAS node selection, synchronization, radio access network (RAN) sharing, multimedia broadcast multicast service (MBMS), subscriber and equipment tracking, RAN information management (RIM), paging, positioning, and warning messaging. Base stations 102 may communicate with each other directly or indirectly (eg, through EPC 160 or core network 190) via backhaul links 134 (eg, an X2 interface). Backhaul links 134 may be wired or wireless.

[0061] Base stations 102 can communicate wirelessly with UEs 104. Each of base stations 102 can provide communication coverage for a corresponding geographic coverage area 110. There may be overlapping geographic coverage areas 110. For example, a small cell 102' can have a coverage area 110' that overlaps with the coverage area 110 of one or more macro base stations 102. A network that includes both small cells and macro cells can be referred to as a heterogeneous network. A heterogeneous network can also include a home evolved Node B (eNB) (HeNB), which can provide services to a restricted group called a closed subscriber group (CSG). The communication link 120 between base station 102 and UE 104 can include uplink (UL) (also known as reverse link) transmissions from UE 104 to base station 102 and / or downlink (DL) (also known as forward link) transmissions from base station 102 to UE 104. The communication link 120 can use multiple-input and multiple-output (MIMO) antenna technology including spatial multiplexing, beamforming, and / or transmit diversity. The communication link can be over one or more carriers. Base station 102 / UE 104 can use spectrum with up to Y MHz (e.g., 5 MHz, 10 MHz, 15 MHz, 20 MHz, 100 MHz, 400 MHz, etc.) of bandwidth per carrier allocated in carrier aggregation for a total of up to Yx MHz (x component carriers) for transmission in each direction. The carriers may or may not be contiguous to each other. Carrier allocation can be asymmetric for DL and UL (e.g., more or fewer carriers can be allocated for DL compared to UL). Component carriers can include a primary component carrier and one or more secondary component carriers. The primary component carrier can be referred to as a primary cell (PCell), while the secondary component carriers can be referred to as secondary cells (SCells).

[0062] Certain UEs 104 may communicate with each other using a device-to-device (D2D) communication link 158. The D2D communication link 158 may use the DL / UL WWAN spectrum. The D2D communication link 158 may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH), a physical sidelink discovery channel (PSDCH), a physical sidelink shared channel (PSSCH), and a physical sidelink control channel (PSCCH). D2D communication may be accomplished through various wireless D2D communication systems, such as, for example, FlashLinQ, WiMedia, Bluetooth, ZigBee, Wi-Fi based on the IEEE 802.11 standard, LTE, or NR.

[0063] The wireless communication system may also include a Wi-Fi access point (AP) 150 that communicates with a Wi-Fi station (STA) 152 in the 5 GHz unlicensed spectrum via a communication link 154. When communicating in the unlicensed spectrum, the STA 152 / AP 150 may perform a clear channel assessment (CCA) prior to communication to determine whether the channel is available.

[0064] The small cell 102' can operate in licensed and / or unlicensed spectrum. When operating in the unlicensed spectrum, the small cell 102' can employ NR and use the same 5 GHz unlicensed spectrum used by the Wi-Fi AP 150. The small cell 102' employing NR in the unlicensed spectrum can increase coverage and / or increase capacity of the access network.

[0065] The base station 102 of a small cell 102' or a large cell (e.g., a macro base station) may include an eNB, a gNodeB (gNB), or another type of base station. Some base stations, such as gNB 180, may operate in the traditional sub-6 GHz (sub-6 Hz) spectrum, in millimeter wave (mmW) frequencies, and / or in near-mmW frequencies for communicating with UE 104. When a gNB 180 operates in mmW frequencies or near-mmW frequencies, it may be referred to as a mmW base station. Extremely high frequency (EHF) is a portion of the RF spectrum in the electromagnetic spectrum. EHF has a range of 30 GHz to 300 GHz and a wavelength between 1 mm and 10 mm. Radio waves in this band may be referred to as millimeter waves. Near-mmW may extend down to 3 GHz frequencies with a wavelength of 100 mm. The super high frequency (SHF) band extends between 3 GHz and 30 GHz and is also known as centimeter waves. Communications using the mmW / near-mmW radio frequency band (e.g., 3 GHz to 300 GHz) have extremely high path loss and a short range. The mmW base station 180 may utilize beamforming 182 with the UE 104 to compensate for the extremely high path loss and short range.

[0066] Base station 180 may send beamformed signals in one or more transmit directions 182′ to UE 104. UE 104 may receive beamformed signals from base station 180 in one or more receive directions 182″. UE 104 may also send beamformed signals to base station 180 in one or more transmit directions. Base station 180 may receive beamformed signals from UE 104 in one or more receive directions. Base station 180 / UE 104 may perform beam training to determine the best receive and transmit directions for each of base station 180 / UE 104. The transmit and receive directions of base station 180 may be the same or different. The transmit and receive directions of UE 104 may be the same or different.

[0067] EPC 160 may include a Mobility Management Entity (MME) 162, other MMEs 164, a Serving Gateway 166, a Multimedia Broadcast Multicast Service (MBMS) Gateway 168, a Broadcast Multicast Service Center (BM-SC) 170, and a Packet Data Network (PDN) Gateway 172. MME 162 may communicate with a Home Subscriber Server (HSS) 174. MME 162 is a control node that handles signaling between UE 104 and EPC 160. Generally, MME 162 provides bearer and connection management. All user Internet Protocol (IP) packets are passed through Serving Gateway 166, which itself is connected to PDN Gateway 172. PDN Gateway 172 provides UE IP address allocation and other functions. PDN Gateway 172 and BM-SC 170 are connected to IP Services 176. IP Services 176 may include the Internet, an intranet, an IP Multimedia Subsystem (IMS), PS streaming services, and / or other IP services. The BM-SC 170 can provide functionality for deploying and delivering MBMS user services. The BM-SC 170 can serve as the entry point for content providers' MBMS transmissions, authorize and initiate MBMS bearer services within the Public Land Mobile Network (PLMN), and schedule MBMS transmissions. The MBMS Gateway 168 can distribute MBMS services to base stations 102 within the Multicast Broadcast Single Frequency Network (MBSFN) area of a broadcast-specific service and is responsible for session management (start / stop) and collecting eMBMS-related charging information.

[0068] The core network 190 may include an access and mobility management function (AMF) 192, other AMFs 193, a session management function (SMF) 194, and a user plane function (UPF) 195. The AMF 192 may communicate with a unified data management (UDM) 196. The AMF 192 is a control node that handles signaling between the UE 104 and the core network 190. Generally speaking, the AMF 192 provides QoS flow and session management. All user Internet Protocol (IP) packets are passed through the UPF 195. The UPF 195 provides UE IP address allocation and other functions. The UPF 195 is connected to the IP services 197. The IP services 197 may include the Internet, an intranet, an IP multimedia subsystem (IMS), PS streaming services, and / or other IP services.

[0069] A base station may also be referred to as a gNB, Node B, evolved Node B (eNB), access point, base transceiver station, radio base station, radio transceiver, transceiver function, basic service set (BSS), extended service set (ESS), transmit reception point (TRP), or some other suitable terminology. Base station 102 provides an access point to EPC 160 or core network 190 for UE 104. Examples of UE 104 include a cellular phone, a smartphone, a Session Initiation Protocol (SIP) phone, a laptop, a personal digital assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., an MP3 player), a camera, a game console, a tablet computer, a smart device, a wearable device, a vehicle, an electric meter, a gas pump, a large or small kitchen appliance, a healthcare device, an implant, a sensor / actuator, a display, or any other similarly functional device. Some of UE 104 may be referred to as IoT devices (e.g., a parking meter, a gas pump, an oven, a vehicle, a heart rate monitor, etc.). UE 104 may also be referred to as a station, a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology.

[0070] Figure 2A FIG200 is a diagram illustrating an example of a first subframe within a 5G / NR frame structure. Figure 2B FIG230 is a diagram showing an example of DL channels within a 5G / NR subframe. Figure 2C Figure 250 shows an example of a second subframe within a 5G / NR frame structure. Figure 2D FIG280 is a diagram illustrating an example of UL channels within a 5G / NR subframe. The 5G / NR frame structure may be FDD, where for a particular set of subcarriers (carrier system bandwidth), subframes within that subcarrier set are dedicated to either DL or UL, or TDD, where for a particular set of subcarriers (carrier system bandwidth), subframes within that subcarrier set are dedicated to both DL and UL. Figure 2A 、 Figure 2CIn the example provided, it is assumed that the 5G / NR frame structure is TDD, subframe 4 is configured with time slot format 28 (primarily DL), where D is DL, U is UL, and X is used flexibly between DL / UL, and subframe 3 is configured with time slot format 34 (primarily UL). Although subframes 3 and 4 are shown in time slot formats 34 and 28, respectively, any particular subframe can be configured with any of the various available time slot formats 0 to 61. Time slot formats 0 and 1 are full DL and full UL, respectively. Other time slot formats 2 to 61 include a mix of DL, UL and flexible symbols. The UE is configured with the time slot format (dynamically through DL control information (DCI), or semi-statically / statically through radio resource control (RRC) signaling) through the received time slot format indicator (SFI). It should be noted that the description below also applies to the 5G / NR frame structure as TDD.

[0071] Other wireless communication technologies may have different frame structures and / or different channels. A frame (10ms) may be divided into 10 equally sized subframes (1ms). Each subframe may include one or more time slots. A subframe may also include a microslot, which may include 7, 4, or 2 symbols. Depending on the time slot configuration, each time slot may include 7 or 14 symbols. For time slot configuration 0, each time slot may include 14 symbols, while for time slot configuration 1, each time slot may include 7 symbols. The symbols on the DL may be cyclic prefix (CP) OFDM (CP-OFDM) symbols. The symbols on the UL may be CP-OFDM symbols (for high throughput scenarios) or discrete Fourier transform (DFT) spread OFDM (DFT-s-OFDM) symbols (also known as single carrier frequency division multiple access (SC-FDMA) symbols) (for power-limited scenarios; limited to single stream transmission). The number of time slots within a subframe is based on the time slot configuration and parameter set. For slot configuration 0, different parameter sets μ0 to 5 allow 1, 2, 4, 8, 16, and 32 slots per subframe, respectively. For slot configuration 1, different parameter sets 0 to 2 allow 2, 4, and 8 slots per subframe, respectively. Therefore, for slot configuration 0 and parameter set μ, there are 14 symbols / slot and 2 μ timeslots / subframes. The subcarrier spacing and symbol length / duration are functions of the parameter set. The subcarrier spacing can be equal to 2 μ *15kHz, where μ is a parameter set from 0 to 5. Thus, parameter set μ=0 has a subcarrier spacing of 15kHz, and parameter set μ=5 has a subcarrier spacing of 480kHz. Symbol length / duration is inversely proportional to the subcarrier spacing. Figures 2A to 2D An example is provided for slot configuration 0 with 14 symbols per slot and parameter set μ = 2 with 1 slot per subframe. The subcarrier spacing is 15 kHz and the symbol duration is approximately 66.7 μs.

[0072] The frame structure can be represented using a resource grid. Each time slot consists of a resource block (RB) (also called a physical RB (PRB)), which spans 12 consecutive subcarriers. The resource grid is divided into multiple resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0073] like Figure 2A As shown, some REs carry reference (pilot) signals (RS) for UEs. RSs may include demodulation RSs (DM-RSs) (indicated as R for a specific configuration). x , where 100x is the port number, but other DM-RS configurations are also possible) and a channel state information reference signal (CSI-RS) for channel estimation at the UE. The RS may also include a beam measurement RS (BRS), a beam refinement RS (BRRS), and a phase tracking RS (PT-RS).

[0074] Figure 2B Examples of various DL channels within a subframe of a frame are shown. The physical downlink control channel (PDCCH) carries downlink control information (DCI) within one or more control channel elements (CCEs), each CCE includes nine RE groups (REGs), and each REG includes four consecutive REs in an OFDM symbol. The primary synchronization signal (PSS) can be within symbol 2 of a specific subframe of the frame. The UE 104 uses the PSS to determine the subframe / symbol timing and the physical layer identification. The secondary synchronization signal (SSS) can be within symbol 4 of a specific subframe of the frame. The UE uses the SSS to determine the physical layer cell identification group number and the radio frame timing. Based on the physical layer identification and the physical layer cell identification group number, the UE can determine the physical cell identifier (PCI). Based on the PCI, the UE can determine the position of the above-mentioned DM-RS. The physical broadcast channel (PBCH) carrying the master information block (MIB) can be logically grouped with the PSS and SSS to form a synchronization signal (SS) / PBCH block. The MIB provides a number of RBs in the system bandwidth and system frame number (SFN). The Physical Downlink Shared Channel (PDSCH) carries user data, broadcast system information not sent through the PBCH (such as System Information Blocks (SIBs)), and paging messages.

[0075] like Figure 2CAs shown, some REs carry DM-RS (indicated as R for a specific configuration, but other DM-RS configurations are also possible) for channel estimation at the base station. The UE can send DM-RS for the physical uplink control channel (PUCCH) and DM-RS for the physical uplink shared channel (PUSCH). The PUSCH DM-RS can be sent in the first one or two symbols of the PUSCH. Depending on whether a short PUCCH or a long PUCCH is sent and depending on the specific PUCCH format used, the PUCCH DM-RS can be sent in different configurations. Although not shown, the UE can send a sounding reference signal (SRS). The base station can use the SRS for channel quality estimation to enable frequency-based scheduling on the UL.

[0076] Figure 2D Examples of various UL channels within a subframe of a frame are shown. The PUCCH may be positioned as indicated in one configuration. The PUCCH carries uplink control information (UCI), such as scheduling requests, channel quality indicator (CQI), precoding matrix indicator (PMI), rank indicator (RI), and HARQ ACK / NACK feedback. The PUSCH carries data and may additionally be used to carry buffer status reports (BSRs), power headroom reports (PHRs), and / or UCI.

[0077] Figure 33 is a block diagram of a base station 310 communicating with a UE 350 in an access network. In the DL, IP packets from the EPC 160 may be provided to a controller / processor 375. The controller / processor 375 implements Layer 3 and Layer 2 functionality. Layer 3 includes a radio resource control (RRC) layer, while Layer 2 includes a service data adjustment protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a medium access control (MAC) layer. The controller / processor 375 provides RRC layer functionality associated with broadcasting of system information (e.g., MIB, SIB), RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release), inter-radio access technology (RAT) mobility, and measurement configuration for UE measurement reporting; PDCP layer functionality associated with header compression / decompression, security (encryption, decryption, integrity protection, integrity verification), and handover support functions; RLC layer functionality associated with delivery of upper layer packet data units (PDUs), error correction through ARQ, concatenation, segmentation and reassembly of RLC service data units (SDUs), resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs into transport blocks (TBs), demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0078] The transmit (TX) processor 316 and receive (RX) processor 370 implement Layer 1 functionality associated with various signal processing functions. Layer 1, including the physical (PHY) layer, may include error detection on the transport channel, forward error correction (FEC) encoding / decoding of the transport channel, interleaving, rate matching, mapping to the physical channel, modulation / demodulation of the physical channel, and MIMO antenna processing. The TX processor 316 handles the mapping to the signal constellation based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The coded and modulated symbols can then be segmented into parallel streams. Each stream can then be mapped to an OFDM subcarrier, multiplexed with a reference signal (e.g., a pilot) in the time and / or frequency domain, and then combined using an inverse fast Fourier transform (IFFT) to produce a physical channel carrying a time-domain OFDM symbol stream. The OFDM stream is spatially precoded to produce multiple spatial streams. The channel estimates from the channel estimator 374 may be used to determine the coding and modulation schemes, as well as for spatial processing. The channel estimates may be derived from a reference signal and / or channel condition feedback transmitted by the UE 350. Each spatial stream may then be provided to a different antenna 320 via a separate transmitter 318TX. Each transmitter 318TX may modulate an RF carrier with a corresponding spatial stream for transmission.

[0079] At the UE 350, each receiver 354RX receives a signal through its corresponding antenna 352. Each receiver 354RX recovers the information modulated onto the RF carrier and provides the information to a receive (RX) processor 356. The TX processor 368 and the RX processor 356 implement Layer 1 functionality associated with various signal processing functions. The RX processor 356 can perform spatial processing on the information to recover any spatial streams destined for the UE 350. If multiple spatial streams are destined for the UE 350, they can be combined into a single OFDM symbol stream by the RX processor 356. The RX processor 356 then converts the OFDM symbol stream from the time domain to the frequency domain using a fast Fourier transform (FFT). The frequency domain signal includes a separate OFDM symbol stream for each subcarrier of the OFDM signal. By determining the most likely signal constellation point transmitted by the base station 310, the symbols on each subcarrier, as well as the reference signal, are recovered and demodulated. These soft decisions can be based on channel estimates calculated by the channel estimator 358. The soft decisions are then decoded and deinterleaved to recover the data and control signals originally sent on the physical channel by base station 310. The data and control signals are then provided to controller / processor 359, which implements Layer 3 and Layer 2 functionality.

[0080] The controller / processor 359 may be associated with a memory 360 that stores program codes and data. The memory 360 may be referred to as a computer-readable medium. In the UL, the controller / processor 359 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover IP packets from the EPC 160. The controller / processor 359 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.

[0081] Similar to the functionality described in conjunction with DL transmission of the base station 310, the controller / processor 359 provides RRC layer functionality associated with system information (e.g., MIB, SIB) acquisition, RRC connection, and measurement reporting; PDCP layer functionality associated with header compression / decompression and security (encryption, decryption, integrity protection, integrity verification); RLC layer functionality associated with transmission of upper layer PDUs, error correction through ARQ, concatenation, segmentation and reassembly of RLC SDUs, resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs to TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0082] Channel estimates derived by the channel estimator 358 from a reference signal or feedback transmitted by the base station 310 may be used by the TX processor 368 to select an appropriate coding and modulation scheme and to facilitate spatial processing. The spatial streams generated by the TX processor 368 may be provided to different antennas 352 via separate transmitters 354TX. Each transmitter 354TX may modulate an RF carrier with a corresponding spatial stream for transmission.

[0083] UL transmissions are processed at the base station 310 in a manner similar to that described in conjunction with the receiver functionality at the UE 350. Each receiver 318RX receives a signal through its respective antenna 320. Each receiver 318RX recovers information modulated onto an RF carrier and provides the information to the RX processor 370.

[0084] The controller / processor 375 may be associated with a memory 376 that stores program code and data. The memory 376 may be referred to as a computer-readable medium. In the UL, the controller / processor 375 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover IP packets from the UE 350. The IP packets from the controller / processor 375 may be provided to the EPC 160. The controller / processor 375 is also responsible for error detection using the ACK and / or NACK protocols to support HARQ operations.

[0085] At least one of the TX processor 368, RX processor 356, and controller / processor 359 may be configured to perform aspects related to Figure 1 198.

[0086] At least one of the TX processor 316, RX processor 370, and controller / processor 375 may be configured to perform aspects related to Figure 1 199.

[0087] Downlink packets may arrive at the base station (e.g., base station 102 or 180) in a periodic manner. The base station may allocate SPS resources for transmitting downlink packets to a UE (e.g., UE 104). However, in some examples, the downlink traffic may have jittery arrivals. Figure 4 An exemplary timeline 400 is shown, which shows the scheduled arrival times 402, 404, and 406 of periodic downlink packets. The arrival times may correspond to the times when the base station expects to receive downlink packets for transmission to the UE. For example, Figure 4 the pattern in Figure 4 shows packets having a nominal arrival time of every T seconds. However, the actual arrival time of the downlink packets may vary, e.g., they may arrive at an indeterminate time. For example, relative to the scheduled arrival pattern, the packets may have jittery arrivals. The packet may include, for example, smaller packets having a size less than 50 bytes, e.g., 40 bytes or less. i within. For example, |Δ i | may be less than the period T. |Δ i | << T. However, |Δ iIt may be greater than the over-the-air (OTA) transmission time of the packet. As mentioned above, the packet may have a small packet size. The packet may be associated with low latency, e.g., for correct delivery within an interval T that may be less than a time period T v (e.g., T v <T). As an example, the communication may include industrial IoT (IIoT), which includes periodic low-latency downlink traffic.

[0088] The characteristics and periodicity of downlink packets can be scheduled in an efficient manner based on SPS resources. Efficient scheduling of transmissions may help, for example, a base station that supports a large number of UEs and can provide periodic downlink packets to UEs. However, the jitter arrival of downlink packets poses challenges to the base station when scheduling downlink transmissions using SPS resources. Although the base station can use dynamic grants to schedule downlink transmissions, dynamic grants involve a large amount of additional signaling between the base station and the UE. For a base station that supports multiple such UEs, the increased overhead may become particularly difficult.

[0089] Figure 5 An exemplary timeline 500 is shown, which shows the scheduled arrival times 502, 504, and 506 of periodic downlink packets and the actual arrival times 512, 514, and 516 with jitter, which is similar to Figure 4 the jitter arrival of packets in Figure 5 In i , the base station configures the SPS downlink opportunity to be later than a possible Δ

[0090] Figure 6 An exemplary timeline 600 is shown, which shows the scheduled arrival times 602, 604, and 606 of periodic downlink packets and the actual arrival times 612, 614, and 616 with jitter, which is similar to Figure 4 and Figure 5 the jitter arrival of packets in Figure 6 In Figure 6 the base station can configure multiple SPS processes around the nominal arrival time (e.g., provide time based on the likelihood of arrival before or after the nominal arrival time). For example, in Figure 6 The example in relates to an orthogonal set of HARQ processes that are allocated together with multiple PUCCH transmissions from a UE that provide feedback for different SPS processes. The number of PUCCH transmissions can be reduced by selecting the number of SPS processes. However, the use of multiple SPS processes may result in multiple HARQ NACKs. In addition, in order to support multiple downlink SPS configurations, this example involves increasing the complexity at the UE. Some UEs (such as UEs with reduced capabilities) may not support multiple downlink SPS configurations.

[0091] Various aspects presented herein provide SPS resources that enable periodic transmission of downlink packets that may experience jitter at the base station. Various aspects presented herein can enable low-latency downlink traffic to be delivered to the UE in a manner that balances low latency for communication with efficient scheduling of resources and reduces processing complexity for the UE. Various aspects presented herein can improve the periodic communication of small, low-latency packets, such as communication to UEs with reduced capabilities.

[0092] Figure 7 An exemplary timeline 700 is shown showing scheduled arrival times 702, 704, and 706 of periodic downlink packets and jittered actual arrival times 712, 714, and 716, similar to FIG. Figure 4 、 Figure 5 and Figure 6 The jitter of the packets in arrives. Figure 7 In the embodiment of the present invention, the base station provides multiple opportunities for each SPS opportunity. For example, at the first SPS opportunity, the base station provides opportunities 722a, 722b and 722c. These opportunities correspond to potential resources allocated for downlink transmission. At the second SPS opportunity, the base station provides opportunities 724a, 724b and 724c, and at the third SPS opportunity, the base station provides opportunities 726a, 726b and 726c. For example, the base station can configure a multi-slot configuration grant (CG) for downlink transmission from the base station. The base station sends a packet on the next time slot (for example, in any opportunity of the corresponding SPS opportunity) according to the arrival of the packet. For example, a packet with an actual arrival time of 712 can be sent in opportunity 722a, a packet with an actual arrival time of 714 can be sent in opportunity 724c, and a packet with an actual arrival time of 716 can be sent in opportunity 726b.

[0093] The various aspects presented herein provide various options for HARQ responses from the UE. For example, Figure 5 Compared to the example in Figure 7 The multiple opportunities of the SPS configuration in the

[0065] enables downlink packets to be sent to the UE with reduced latency. The SPS opportunity may correspond to a single HARQ process and may be associated with, for example, Figure 6The example in may involve a reduced HARQ response compared to the example in. In some examples, if the CRC is passed on any time slot of the SPS opportunity, the UE may send an ACK. If not, the UE may send a NACK. In addition, Figure 7 Aspects of the present invention may enable a UE to, for example, shut down a receiver of the UE after delivering a CRC, which may result in power savings at the UE. Aspects of the present invention may enable a UE to shut down a receiver of the UE after delivering a CRC, which may result in power savings at the UE. Figure 6 Efficient communication of reduced capability devices in multiple SPS configurations described. Various aspects presented herein support a large number of reduced capability UEs (which may be referred to as NR-light UEs in some examples) with jittered periodic traffic. A large number of UEs may benefit from SPS resources rather than a dynamic grant (DG) based solution where the PDCCH may be a bottleneck limiting communication. A large number of UEs may also challenge the configuration and activation / reactivation of multiple SPS configurations, such as in conjunction with Figure 6 Described. Combined with Figure 6 Compared to the multi-SPS configuration described above, aspects presented herein operate with reduced HARQ processes and reduced HARQ responses.

[0094] The base station can configure the UE to support the combination Figure 7 For example, the base station may configure the UE via RRC to monitor downlink communications based on the multi-opportunity SPS configuration. The base station may configure the UE to monitor a number of opportunities, such as a number s, for each SPS opportunity of the SPS configuration. Figure 7 In this example, s=3. The UE may be configured for any number of opportunities with s>1 for each SPS opportunity. Multiple opportunities may correspond to multiple time slots of the SPS resource starting at an offset time from the scheduled arrival time. Figure 7 As shown, the offset may provide at least one opportunity before the scheduled arrival time. The base station may send a packet to the UE in an opportunity corresponding to the SPS opportunity. For example, the base station may send a packet to the UE in a single opportunity of the SPS opportunity, for example, not in multiple opportunities of the SPS opportunity. The UE may perform blind decoding of the SPS PDSCH at each opportunity (e.g., at 722a, 722b, and 722c of the first SPS opportunity). For example, with Figure 6 In contrast to the example in , each SPS opportunity may correspond to one HARQ process shared by multiple opportunities of that SPS opportunity. The same HARQ ID determination mechanism may be used for SPS opportunities with a single opportunity, such as in conjunction with Figure 5 described.

[0095] Figure 8An example is shown in which a base station can allocate a single shared resource for ACK / NACK feedback from a UE. In a first example 800, the UE successfully receives a downlink packet in the first opportunity corresponding to an SPS opportunity of HARQ 0. The UE can send ACK / NACK feedback in a single PUCCH resource 802. Figure 8 In the example 800, each opportunity of the SPS opportunity is mapped to the same PUCCH reporting instance. The UE can report multi-bit ACK / NACK, which provides separate feedback for each opportunity. For example, for s opportunities, the UE can report s bits of ACK / NACK, 1 bit for each opportunity. In example 800, when the UE successfully receives a packet in the first opportunity, the UE can indicate ACK in the bit corresponding to the first opportunity and can indicate NACK in the bits of the other two opportunities. In example 850, the downlink packet is sent in the second opportunity, but is not successfully received by the UE due to low SINR, for example. Therefore, the UE can indicate NACK for each bit of the PUCCH. The timing of the PUCCH can be configured by DCI activation. In some examples, a maximum of one ACK bit can be included in the ACK codebook. If arrival drift occurs, the sequence of ACK positions in the PUCCH can be used by the base station for active SPS reactivation. The base station can provide dynamic authorization (e.g., DCI 804) to schedule retransmission of downlink packets that were not successfully received for a specific SPS opportunity. In example 850, the base station may issue a dynamic grant in DCI 804 that indicates a HARQ ID (eg, HARQ0) corresponding to the SPS opportunity as an index to indicate to the UE the downlink packet to be retransmitted.

[0096] In some examples, the DCI may not identify a specific opportunity to send the initial packet. In response to receiving a dynamic grant for retransmission in DCI 804, the UE may perform HARQ combining of the retransmission with the SPS opportunity of the initial transmission. The UE may use the HARQ ID to identify the SPS opportunity of the initial transmission. The UE may determine the opportunity of the identified SPS opportunity that has the greatest likelihood of a downlink packet. The greatest likelihood may be based on blind PDSCH decoding performed by the UE, for example, an indicator based on DMRS sequence detection, etc. After determining the opportunity with the highest likelihood of the initial downlink packet, the UE may perform HARQ combining of the retransmission with the determined opportunity of the SPS opportunity.

[0097] In other examples, the base station may provide an indication to the UE that enables the UE to determine the opportunity of an SPS opportunity for HARQ combining with a retransmission. Figure 15 An exemplary timing diagram 1500 is shown, which shows an exemplary indication of a base station. Figure 15As shown, the base station can use the consistency between the time domain resource allocation (TDRA) in the retransmission dynamic grant (e.g., in DCI 1504) and the SPS opportunity for the initial transmission of the downlink packet to indicate to the UE the opportunity to perform HARQ combining with the retransmission. Figure 15 In the example, the initial transmission of the SPS opportunity associated with HARQ 0 may include multiple opportunities, such as in combination with Figure 7 described. Figure 15 Each opportunity in can have a different time offset relative to the slot boundary. Figure 15 In , the first opportunity has a zero offset relative to the time slot boundary, the second opportunity has an offset Δ relative to the time slot boundary, and the third opportunity has an offset 2Δ relative to the time slot boundary. The base station can issue a dynamic grant that indicates the corresponding start time offset relative to the time slot boundary as the opportunity to initially send the packet. For example, in Figure 15 In the example, the packet is sent in the third opportunity of the SPS opportunity, which has a time offset of 2Δ relative to the slot boundary. DCI 1504 indicates a HARQ process, such as HARQ 0, and schedules retransmissions at the same time offset as the third opportunity (e.g., 2Δ relative to the slot boundary). The UE can use the time offset to identify the corresponding opportunity of the SPS opportunity. After determining the opportunity indicated as including the initial downlink packet, the UE can perform HARQ combining of the retransmission with the determined opportunity of the SPS opportunity.

[0098] Figure 9 Examples 900 and 950 of a single PUCCH instance 902 are shown with combined ACK / NACK feedback for each opportunity of an SPS opportunity. Figure 8 , the UE may have a single configured PUCCH reporting instance 902. Figure 8In contrast, the base station may report a single ACK or a single NACK for an SPS opportunity. In some examples, the UE may report a single bit of ACK / NACK for each opportunity of the SPS opportunity. In example 950, the UE did not successfully receive the downlink packet sent in the third opportunity of the SPS opportunity corresponding to HARQ 0. Therefore, the UE sends a NACK in PUCCH 902. In example 800, the UE successfully receives the downlink packet in the first opportunity of the SPS opportunity and sends an ACK in PUCCH 902. When the UE receives a PDSCH that delivers a CRC in any opportunity of the SPS opportunity, the UE may send an ACK. Otherwise, the UE may send a NACK. In some examples, the UE may enter a sleep state between successfully receiving the downlink packet and PUCCH 902, such as micro-sleep, low power mode, turning off the receiver, etc. For example, the UE may enter a micro-sleep state after detecting CRC delivery, such as remaining in a discontinuous reception (DRX) off mode. In some examples, each opportunity may correspond to a discontinuous transmission (DTX) of the base station. As combined Figure 8 Description, the base station can schedule retransmission in dynamic grant. Figure 8 or Figure 15 Description, the UE can perform HARQ combining for retransmission.

[0099] Figure 10 An example 1000 is shown with multiple PUCCH opportunities 1002a, 1002b, 1002c, and 1004. In some examples, a UE may send up to two PUCCH transmissions. Figure 10 For an SPS opportunity with s opportunities, the base station can provide an ACK-only PUCCH opportunity for each of the s-1 SPS opportunities, which enables early ACK for successfully received downlink packets. The PUCCH opportunity enables the UE to Figure 8 and Figure 9In the example in , an ACK is provided to the base station more quickly. In addition, limiting the feedback in PUCCH resources 1002a, 1002b, and 1002c to ACK helps to reduce the amount of signaling from the UE. The last PUCCH resource 1004 after the last opportunity of the SPS opportunity can be configured in any of a variety of ways. For example, to increase reliability, PUCCH resource 1004 can have a different time, frequency, and / or format than other PUCCH resources 1002a, 1002b, and 1002c. In some examples, PUCCH resource 1004 can be configured for ACK / NACK feedback, while PUCCH resources 1002a, 1002b, and 1002c can be configured for ACK feedback and not for NACK feedback. In some examples, the UE can send an ACK in the PUCCH resource corresponding to the opportunity to receive a downlink packet, and can send an ACK in PUCCH resource 1004, such as two ACKs. In other examples, the UE may send an ACK in the PUCCH resource corresponding to the opportunity to receive the downlink packet, rather than sending an ACK in the PUCCH resource 1004. If the packet is not successfully received in any opportunity, the base station may send a NACK in the PUCCH resource 1004. Figure 8 Description, the base station can schedule retransmission in dynamic grant. Figure 8 or Figure 15 Description, the UE can perform HARQ combining for retransmission.

[0100] Figure 11 A set of examples with multiple PUCCH opportunities 1102a, 1102b, 1102c is shown, for example, one for each SPS opportunity. In some examples, a UE may send at most one PUCCH transmission. Figure 11 In the example 1150, for an SPS opportunity with s opportunities, the base station may provide s PUCCH opportunities, for example, providing one PUCCH opportunity for each of the s SPS opportunities. The PUCCH opportunity enables early ACK for successfully received downlink packets. Each PUCCH opportunity may be configured for ACK and not for NACK. Thus, in example 1100, the UE sends an ACK in PUCCH 1102a after successfully receiving a downlink packet in the first opportunity. In example 1150, because the UE did not successfully receive a downlink packet in any of the SPS opportunities, the UE does not send any feedback, for example, not in PUCCH 1102a, 1102b, or 1102c. The PUCCH opportunity enables the UE to receive a downlink packet more quickly than the UE received it in the first opportunity. Figure 8 and Figure 9 The example in provides ACK to the base station faster. Figure 10 Compared to the example in Figure 11 In the example 1100, the last PUCCH 1102c is used for ACK and not for NACK. As shown in the example 1100, the UE may transition to micro-sleep after sending the ACK, for example, operating in DRX off mode during the remaining opportunities of the SPS opportunity. Figure 8 Description, the base station can schedule retransmission in dynamic grant. Figure 8 or Figure 15 Description, the UE can perform HARQ combining for retransmission.

[0101] Figure 12 A set of examples are shown showing a single PUCCH resource 1202 configured for ACK / NACK feedback. For example, the PUCCH resource 1202 may correspond to the PUCCH resource of the last SPS opportunity for an SPS opportunity. As shown in example 1200, for example, if the UE has previously sent an ACK in another PUCCH resource 1204, the UE may perform DTX in the PUCCH resource 1202 by not sending any feedback in the PUCCH resource 1202. As shown in example 1250, the UE may send an ACK in the PUCCH resource 1202. For example, if a successfully received downlink packet has not been previously acknowledged, the UE may send an ACK. As shown in example 1275, if a downlink packet has not been successfully received in any opportunity of the SPS opportunity, the UE may send a NACK in the PUCCH resource 1202. As shown in combination Figure 10 As described, the UE may be configured with other PUCCH resources for ACK instead of NACK. If the base station detects NACK in PUCCH resource 1202, or if the base station detects DTX for each SPS opportunity in the PUCCH resource, the base station may schedule retransmissions in a dynamic grant, as in conjunction with Figure 8 As described. Figure 8 or Figure 15 Description, the UE can perform HARQ combining for retransmission.

[0102] Figure 13 A set of examples is shown, which shows a single PUCCH resource 1302 configured for ACK / NACK feedback. For example, the PUCCH resource 1302 may correspond to the PUCCH resource for the last SPS opportunity of the SPS opportunity. Figure 12Compared to Example 1200 in Example 1300, even if the UE sends an ACK in PUCCH resource 1304, the UE may send an ACK in another PUCCH resource 1302. As shown in Example 1350, if the UE successfully receives a downlink packet in the last SPS opportunity of the SPS opportunity, the UE may send a single ACK in PUCCH resource 1302. As shown in Example 1375, if the UE does not successfully receive a downlink packet in any opportunity of the SPS opportunity, the UE may send a NACK in PUCCH resource 1302. Figure 10 As described, the UE may be configured with additional PUCCH resources for ACKs instead of NACKs. Thus, the UE may send up to two ACKs, for example, as in example 1300, but may send a single NACK. If the base station detects a NACK in PUCCH resource 1302, or if the base station detects DTX for each SPS opportunity in the PUCCH resource, the base station may schedule retransmissions in a dynamic grant, as in conjunction with Figure 8 As described. Figure 8 or Figure 15 Description, the UE can perform HARQ combining for retransmission.

[0103] Figure 14 A set of examples is shown showing that additional PUCCH resources 1402 are provided in addition to the individual PUCCH resources for each SPS opportunity of an SPS occasion. For example, additional PUCCH resources 1402 may be provided after the last SPS opportunity of an SPS occasion. Figure 13 In FIG, PUCCH resource 1302 corresponds to the PUCCH resource used for the last SPS opportunity. Figure 13 In comparison, Figure 14 In addition to the PUCCH resources for the last SPS opportunity, additional PUCCH resources 1402 are provided. Figure 10As described, other PUCCH resources may be configured for ACK instead of NACK. Additional PUCCH resources 1402 may be configured for ACK and NACK. The additional PUCCH resources may be delayed in time compared to other PUCH resources. The additional PUCCH resources may be separated from other PUCCH resources corresponding to separate SPS opportunities, for example, in time and / or frequency. In example 1400, even if the UE sends an ACK in PUCCH resource 1404, the UE may send an ACK in another PUCCH resource 1402. As shown in example 1450, even if the UE sends an ACK in PUCCH resource 1404, the UE may send an ACK in another PUCCH resource 1402. As shown in example 1475, if a downlink packet is not successfully received in any opportunity of the SPS opportunity, the UE may send a NACK in PUCCH resource 1402. Thus, the UE may send up to two ACKs, for example, as in examples 1400 and 1450, but may send a single NACK. If the base station detects a NACK in the PUCCH resource 1402, or if the base station detects DTX for each SPS opportunity in the PUCCH resource, the base station may schedule retransmissions in a dynamic grant, such as in conjunction with Figure 8 As described. Figure 8 or Figure 15 Description, the UE can perform HARQ combining for retransmission.

[0104] Although the examples in the figures use an example of three SPS opportunities per SPS opportunity to illustrate the concepts, the concepts can be applied to any number of SPS opportunities in an SPS opportunity.

[0105] In some examples, when the UE sends ACK / NACK feedback in a PUSCH transmission, the UE may send the feedback differently, e.g., piggybacking or multiplexing with the PUSCH transmission. For example, if the UE is configured with PUCCH resources for ACK but not NACK, e.g., ACK-only resources, then if the UE multiplexes HARQ feedback with PUSCH, the UE may determine whether to report ACK or NACK for the PDSCH in an SPS timing or SPS opportunity. Thus, the UE may send a NACK when the HARQ feedback is multiplexed with PUSCH, e.g., piggybacking with PUSCH. For example, when the HARQ feedback is not multiplexed with PUSCH, the ACK-only restriction may apply, whereas when the HARQ feedback is multiplexed with PUSCH, the ACK-only restriction may not apply.

[0106] Figure 161600 is a flow chart of a method of wireless communication. The method may be performed by a UE or a component of a UE (e.g., UE 104, 350; a processing system, which may include memory 360 and may be the entire UE 350 or a component of UE 350, such as TX processor 368, RX processor 356, and / or controller / processor 359). Optional aspects are shown in dashed lines. The method improves efficient use of resources for jittery periodic traffic.

[0107] At 1602, the UE receives a configuration for multiple SPS opportunities, each SPS opportunity including multiple opportunities for downlink transmission by a base station. Multiple SPS opportunities can be used for a single SPS configuration. The multiple opportunities of the SPS opportunity can be associated with the same HARQ process. In some examples, each opportunity of the multiple opportunities can correspond to a time slot starting from an offset of the SPS opportunity. For example, each SPS opportunity can include multiple opportunities, such as in combination with Figure 7 described.

[0108] At 1606, the UE monitors downlink transmissions during one or more opportunities of the SPS opportunity. Monitoring downlink transmissions may include performing blind decoding on the PDSCH at each opportunity of the SPS opportunity until the downlink transmission is successfully received. In some examples, the UE may monitor downlink transmissions during each opportunity of the SPS opportunity. In some examples, the UE may monitor downlink transmissions during the opportunities of the SPS opportunity until the UE successfully receives the downlink transmission. If the UE successfully receives the downlink transmission before the last opportunity, the UE may stop monitoring the opportunities of the SPS opportunity.

[0109] In some examples, each of the multiple opportunities of the SPS opportunity can be mapped to a single PUCCH resource for feedback, such as in conjunction with Figure 8 or Figure 9 As shown at 1608, the UE may send feedback for each of multiple opportunities for SPS opportunities in a single PUCCH resource, such as in combination with Figure 8 or Figure 9 The feedback may include HARQ feedback including at least one bit for each of a plurality of opportunities for the SPS opportunity. In some examples, the HARQ feedback may provide separate feedback for each opportunity of the SPS opportunity, such as in combination with Figure 8 In other examples, the HARQ feedback may include a single bit that provides overall HARQ feedback for the SPS opportunity, such as in combination with Figure 9 described.

[0110] As shown at 1622, the UE may receive scheduling information for retransmission in a DCI indicating the HARQ process to be used for the SPS opportunity as the index of the retransmission. Figure 9 Description, DCI can identify the HARQ process to inform the UE which downlink transmission is being retransmitted.

[0111] As shown at 1626, the UE may perform HARQ combining of the retransmissions. The UE may perform HARQ combining of the retransmissions with the SPS opportunity with the highest detection metric. Thus, the UE may determine the SPS opportunity that is most likely to have included a downlink transmission and may perform HARQ combining based on the UE's determination.

[0112] In some examples, the base station may provide information to the UE to help the UE determine which opportunity to use to perform HARQ combining. For example, the DCI scheduling retransmissions may further include a time domain resource allocation for the retransmissions. As an example, the DCI may indicate a timing offset, such as in conjunction with Figure 15 As described, the timing offset helps the UE identify the opportunity of the SPS opportunity including the initial transmission.Then, at 1624, the UE may determine the opportunity of the SPS opportunity for HARQ combination with the retransmission based on the time domain resource allocation for the retransmission.

[0113] As shown at 1610, the UE may send HARQ feedback with shared bits for multiple opportunities of the SPS opportunity. The HARQ feedback may include Figure 9 、 Figure 10 、 Figure 12 、 Figure 13 or Figure 14 Aspects described in any of .

[0114] As shown at 1612, the UE may enter a sleep state between successfully receiving the downlink transmission and sending the HARQ feedback in the SPS opportunity or after sending the HARQ feedback (e.g., after transmission of an early ACK). Figure 9 、 Figure 11 and Figure 12 Examples are shown in which the UE may transition to a sleep state, a reduced power state, or a state in which the UE does not monitor the PDSCH after successful reception of the PDSCH and / or transmission of the HARQ.

[0115] As shown at 1604, the UE may receive a schedule of PUCCH resources to provide HARQ feedback for the SPS opportunity.The UE may receive a schedule of separate PUCCH resources for one or more of the multiple opportunities for the SPS opportunity. Figures 10 to 14Various examples of PUCCH resources are shown, including separate PUCCH resources for one or more of a plurality of opportunities for an SPS opportunity. In some examples, the UE may receive a schedule of separate PUCCH resources for each of a plurality of opportunities for the SPS opportunity. In some examples, the schedule may provide separate PUCCH resources for a subset (e.g., s-1 opportunities) of a plurality of opportunities (e.g., s opportunities) of an SPS opportunity, such as in Figure 10 、 Figure 12 or Figure 13 For example, scheduling may provide one less individual PUCCH resource than the number of multiple opportunities (e.g., s, where s is an integer) (e.g., s-1 PUCCH resources). In some examples, individual PUCCH resources may be limited to use for positive acknowledgements, e.g., such as in conjunction with Figures 10 to 14 The scheduling may schedule additional PUCCH resources after the SPS opportunity. The additional PUCCH resources may include a different time, a different frequency, or a different format than the individual PUCCH resources, for example, as combined with Figure 10 、 12 , 13 or 14. The scheduling may provide a separate PUCCH resource for each of the multiple opportunities of the SPS opportunity, such as in combination with Figure 11 or Figure 14 In some examples, individual PUCCH resources may be restricted for use, for example, for positive ACKs, and may be restricted from use for NACKs.

[0116] As shown at 1614, if the downlink transmission is successfully received, the UE may send an ACK in a separate PUCCH resource and enter sleep mode after successfully receiving the downlink transmission. Then, at 1616, if the downlink transmission is not successfully received in any of the multiple opportunities of the SPS opportunity, the UE refrains from sending feedback, for example, as combined with Figure 11 described.

[0117] In some examples, the scheduling at 1604 may schedule a separate PUCCH resource limited to ACK for a subset of multiple opportunities of the SPS opportunity (e.g., s-1 opportunities), and schedule the last PUCCH resource after the last opportunity of the SPS opportunity for ACK / NACK, for example, such as in combination with Figures 12 to 14 Any of the ones described.

[0118] The UE may send a single ACK to the base station in a separate PUCCH resource or the last PUCCH resource. If the UE does not successfully receive a downlink packet in any of the SPS opportunities, the UE may send a NACK in the last PUCCH resource. Figure 12 An example is shown where the UE may send a single ACK, for example, in a separate PUCCH resource or the last PUCCH resource.

[0119] The UE may send ACK to the base station in a separate PUCCH resource and the last PUCCH resource, as shown at 1618. If the UE does not successfully receive a downlink packet in any of the SPS opportunities, the UE may send a NACK in the last PUCCH resource. Figure 13 An example is shown where the UE may send ACK multiple times, for example in separate PUCCH resources and a final PUCCH resource.

[0120] The scheduling at 1604 may schedule a separate PUCCH resource limited to ACK for each of the multiple opportunities of the SPS opportunity, and may schedule additional PUCCH resources after the last opportunity of the SPS opportunity for ACK / NACK, for example, such as in conjunction with Figure 14 In this example, at 1618, the UE may send an ACK to the base station in the separate PUCCH resources and the additional PUCCH resources if the downlink is successfully received, and may send a NACK in the additional resources if the packet is not successfully received in any of the SPS opportunities.

[0121] In some examples, the UE may adjust the feedback based on whether the feedback is piggybacked on the PUSCH. For example, at 1604, the UE may receive a schedule of PUCCH resources limited to positive ACKs for an SPS opportunity. Then, at 1620, the UE may send a NACK multiplexed with the PUSCH and corresponding to the SPS opportunity.

[0122] Figure 16 Each box in the foregoing flowchart and / or Figures 7 to 15 The aspects of any of the foregoing that are performed by the UE may be performed by a component of the UE device, which may include one or more of these components. The component may be one or more hardware components specifically configured to perform the recited processes / algorithms, implemented by a processor configured to perform the recited processes / algorithms, stored on a computer-readable medium for processor implementation, or some combination thereof.

[0123] In one configuration, the UE includes a method for performing the combination Figure 16 The methods described and / or Figures 7 to 15The aforementioned means may be one or more of the aforementioned components of the device and / or a processing system of such a device, which is configured to perform the functions described by the aforementioned means. The processing system may include a transmit processor, a receive processor, and a controller / processor. Thus, in one configuration, the aforementioned means may be memory 360, such as TX processor 368, RX processor 356, and / or controller / processor 359, which is configured to perform the functions described by the aforementioned means.

[0124] Figure 17 1700 is a flow chart of a method of wireless communication. The method may be performed by a base station or a component of a base station (e.g., base station 102, 180, 310; a processing system, which may include memory 376 and may be the entire base station 310 or a component of base station 310, such as TX processor 316, RX processor 370, and / or controller / processor 375). Optional aspects are shown in dashed lines. The method improves efficient use of resources for jittery periodic traffic.

[0125] At 1702, a base station configures a UE for multiple SPS opportunities, each SPS opportunity including multiple opportunities for downlink transmission by the base station. Multiple SPS opportunities may be used for a single SPS configuration. The multiple opportunities of the SPS opportunity may be associated with the same HARQ process. In some examples, each of the multiple opportunities may correspond to a time slot starting at an offset from the SPS opportunity. For example, each SPS opportunity may include multiple opportunities, such as in combination with Figure 7 described.

[0126] At 1706, the base station sends the packet to the UE in an SPS opportunity based on the arrival time of the packet. For example, the base station sends the packet to the UE in a single opportunity among multiple opportunities of the SPS opportunity.

[0127] In some examples, each of the multiple opportunities of the SPS opportunity is mapped to a single PUCCH resource for feedback, such as in conjunction with Figure 8 or Figure 9 In some examples, at 1708, the base station receives HARQ feedback having at least one bit for each of a plurality of SPS opportunities, such as in conjunction with Figure 8 or Figure 9 The feedback may include HARQ feedback including at least one bit for each of a plurality of opportunities for the SPS opportunity. In some examples, the HARQ feedback may provide separate feedback for each opportunity of the SPS opportunity, such as in combination with Figure 8In other examples, the HARQ feedback may include a single bit that provides overall HARQ feedback for the SPS opportunity, such as in combination with Figure 9 described.

[0128] As indicated at 1716, the base station may schedule a retransmission in a DCI that indicates the HARQ process used for the SPS opportunity as an index for the retransmission, e.g., as in conjunction with Figure 9 and / or Figure 15 In some examples, the DCI scheduling the retransmission may also include a time domain resource allocation for the retransmission, the time domain resource allocation indicating that the UE uses the SPS opportunity for HARQ combination with the retransmission, for example, as combined with Figure 15 described.

[0129] As shown at 1710, the base station may receive HARQ feedback with shared bits for multiple opportunities of the SPS opportunity. The HARQ feedback may include combining Figure 9 、 Figure 10 、 Figure 12 、 Figure 13 or Figure 14 Aspects described in any of .

[0130] As shown at 1704, the base station may schedule separate PUCCH resources for one or more of the plurality of opportunities for SPS opportunities. Figures 10 to 14 Various examples of PUCCH resources including separate PUCCH resources for one or more of a plurality of opportunities for SPS opportunities are shown. In some examples, scheduling may provide separate PUCCH resources for a subset of a plurality of opportunities for SPS opportunities, such as in Figure 10 、 Figure 12 or Figure 13 In any example of . For example, scheduling may provide one less individual PUCCH resource than the number of multiple opportunities. In some examples, the individual PUCCH resources may be limited to use for positive acknowledgements, for example, such as in conjunction with Figures 10 to 14 In some examples, the base station may schedule additional PUCCH resources after the SPS opportunity. The additional PUCCH resources may include a different time, a different frequency, or a different format than the individual PUCCH resources, for example, as combined with Figure 10 、 Figure 12 、 Figure 13 or Figure 14 In some examples, the base station can schedule a separate PUCCH resource for each of multiple opportunities of SPS opportunity, such as in combination with Figure 11 or Figure 14In some examples, individual PUCCH resources may be restricted for, for example, positive ACKs and may be restricted from being used for NACKs. If a positive ACK is not received in any of the individual PUCCH resources, the base station may schedule a retransmission of the packet, for example, at 1716.

[0131] In some examples, at 1704, the base station may schedule a separate PUCCH resource limited to ACK for a subset of the multiple opportunities of the SPS opportunity and schedule a final PUCCH resource after the last opportunity of the SPS opportunity for ACK / NACK, e.g., such as in conjunction with Figures 12 to 14 Any of the ones described.

[0132] At 1712, if the UE successfully received the downlink transmission, the base station may receive an ACK in a separate PUCCH resource, or if the base station does not receive feedback, the base station may determine that the UE did not successfully receive the downlink transmission, such as in conjunction with Figure 11 described.

[0133] At 1704 , the base station may schedule s−1 separate PUCCH resources limited to positive ACK for separate opportunities of the SPS opportunity, and may schedule a single PUCCH resource after the SPS opportunity for ACK / NACK.

[0134] At 1712, the base station may receive a single ACK in a separate PUCCH resource or a last PUCCH resource if the downlink packet is successfully received, or a NACK in a last PUCCH resource if the downlink packet is not successfully received. Figure 12 Exemplary aspects of a single ACK or a single NACK are shown.

[0135] At 1712, the base station may receive an ACK from the UE in the separate PUCCH resources and the final PUCCH resources. Figure 13 An example is shown in which the base station may receive ACK multiple times, for example in separate PUCCH resources and a final PUCCH resource.

[0136] The base station may schedule a separate PUCCH resource limited to ACK for each of the multiple opportunities of the SPS opportunity at 1704, and may schedule additional PUCCH resources after the last opportunity of the SPS opportunity for ACK / NACK, for example, such as in conjunction with Figure 14 In this example, at 1714, the base station may receive an ACK in a separate PUCCH resource and an additional PUCCH resource.

[0137] In some examples, the UE may adjust the feedback based on whether the feedback is piggybacked on the PUSCH. For example, the base station may schedule PUCCH resources limited to positive ACKs for SPS opportunities. However, the base station receives a NACK from the UE that is multiplexed with the PUSCH and corresponds to the SPS opportunity.

[0138] Figure 17 Each box in the foregoing flowchart and / or by Figures 7 to 15 The aspects of any of the above that are performed by the base station may be performed by a component of the base station apparatus, which may include one or more of these components. The component may be one or more hardware components specifically configured to perform the recited process / algorithm, implemented by a processor configured to perform the recited process / algorithm, stored on a computer-readable medium for processor implementation, or some combination thereof.

[0139] In one configuration, the base station includes a Figure 17 The methods described and / or Figures 7 to 15 The aforementioned components may be one or more of the aforementioned components of the device and / or the processing system of such a device, which are configured to perform the functions described by the aforementioned components. The processing system may include a transmit processor, a receive processor, and a controller / processor. Thus, in one configuration, the aforementioned components may be memory 360, such as TX processor 368, RX processor 356, and / or controller / processor 359, which are configured to perform the functions described by the aforementioned components.

[0140] Figure 18 FIG1 is a schematic diagram of a wireless communication system 1800 according to some aspects of the present disclosure. The wireless communication system 1800 includes three interacting domains: a core network 1802, a radio access network (RAN) 1804, and at least one scheduled entity 1806. In the following discussion, the at least one scheduled entity 1806 may be referred to as a user equipment (UE) 1806. The RAN 1804 includes at least one scheduling entity 1808. In the following discussion, the at least one scheduling entity 1808 may be referred to as a base station (BS) 1808. The wireless communication system 1800 enables data communication between the UE 1806 and an external data network 1810, such as, but not limited to, the Internet.

[0141] The RAN 1804 can implement any suitable one or more wireless communication technologies to provide radio access to the UE 1806. As an example, the RAN 1804 can operate in accordance with the 3rd Generation Partnership Project (3GPP) New Radio (NR) specifications, commonly referred to as 5G. As another example, the RAN 1804 can operate in accordance with a hybrid of 5G NR and Evolved Universal Terrestrial Radio Access Network (eUTRAN) standards (commonly referred to as LTE). 3GPP refers to this hybrid RAN as the Next Generation RAN or NG-RAN. Of course, many other examples can be utilized within the scope of the present disclosure.

[0142] As shown, the RAN 1804 includes multiple base stations 1808. In a broad sense and as discussed above, a base station is a network element in a radio access network that is responsible for radio transmission and reception to and from UEs in one or more cells. In different technologies, standards, or contexts, those skilled in the art may refer to a base station as a base transceiver station (BTS), a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), an access point (AP), a Node B (NB), an eNode B (eNB), a gNode B (gNB), or some other appropriate terminology.

[0143] Further shown is a radio access network 1804 that supports wireless communications for multiple mobile devices. A mobile device may be referred to as a user equipment (UE) in the 3GPP standard and may also be referred to by those skilled in the art as a mobile station (MS), subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal (AT), mobile terminal, wireless terminal, remote terminal, handset, terminal, user agent, mobile client, client, or some other suitable terminology. A UE may be a device that provides a user with access to network services.

[0144] In this document, a "mobile" device does not necessarily have mobile capabilities and may be fixed. The term mobile device or mobile device broadly refers to various devices and technologies. A UE may include many hardware structural components whose size, shape, and arrangement facilitate communication. Such components may include antennas, antenna arrays, RF chains, amplifiers, one or more processors, etc. electrically coupled to each other. For example, some non-limiting examples of mobile devices include mobile phones, cellular (cellular) phones, smart phones, session initiation protocol (SIP) phones, laptops, personal computers (PCs), notebooks, netbooks, smart books, tablet computers, personal digital assistants (PDAs), and various embedded systems, such as those corresponding to the "Internet of Things" (IoT). A mobile device may also be a car or other means of transportation, a remote sensor or actuator, a robot or robotic device, a satellite radio, a global positioning system (GPS) device, an object tracking device, a drone, a multi-rotor aircraft, a quadrotor aircraft, a remote control device, a consumer and / or wearable device, such as glasses, wearable cameras, virtual reality devices, smart watches, health or fitness trackers, digital audio players (e.g., MP3 players), cameras, game consoles, etc. Mobile devices may also be digital home or smart home devices, such as home audio, video, and / or multimedia devices, appliances, vending machines, smart lighting, home security systems, smart meters, and the like. Mobile devices may also be smart energy devices, security devices, solar panels or solar arrays, municipal infrastructure devices that control power (e.g., smart grids), lighting, water, and the like; industrial automation and enterprise devices; logistics controllers; agricultural equipment; military defense equipment, vehicles, aircraft, ships, and weapons; and the like. Furthermore, mobile devices may provide connected medical or telemedicine support, i.e., healthcare at a distance. Telemedicine devices may include telemedicine monitoring devices and telemedicine management devices, whose communications may be given preferential treatment or priority access compared to other types of information, for example, priority access for transmission of critical service data and / or priority access in terms of the associated QoS for transmission of critical service data.

[0145] The wireless communication between RAN 1804 and UE 1806 can be described as utilizing an air interface. Transmissions from a base station (e.g., base station 1808) to one or more UEs (e.g., UE 1806) over the air interface can be referred to as downlink (DL) transmissions. According to certain aspects of the present disclosure, the term downlink can refer to point-to-multipoint transmissions originating from a scheduling entity (further described below; e.g., base station 1808). Another way to describe this scheme can be to use the term broadcast channel multiplexing. Transmissions from a UE (e.g., UE 1806) to a base station (e.g., base station 1808) can be referred to as uplink (UL) transmissions. According to certain aspects of the present disclosure, the term uplink can refer to point-to-point transmissions originating from a scheduled entity (further described below; e.g., UE 1806).

[0146] In some examples, access to the air interface can be scheduled, where a scheduling entity (e.g., base station 1808) allocates resources for communication among some or all devices and equipment within its service area or cell. In the present disclosure, as discussed further below, a scheduling entity can be responsible for scheduling, assigning, reconfiguring, and releasing resources for one or more scheduled entities. That is, for scheduled communications, a UE 1806, which can be a scheduled entity, can utilize resources allocated by the scheduling entity 1808.

[0147] Base station 1808 is not the only entity that can act as a scheduling entity. That is, in some examples, a UE can serve as a scheduling entity that schedules resources for one or more scheduled entities (e.g., one or more other UEs).

[0148] like Figure 18 As shown, a scheduling entity 1808 can broadcast downlink traffic 1812 to one or more scheduled entities 1806. Broadly speaking, a scheduling entity 1808 is a node or device responsible for scheduling traffic in a wireless communication network, including downlink traffic 1812 and, in some examples, uplink traffic 1816 from one or more scheduled entities 1806 to the scheduling entity 1808. On the other hand, a scheduled entity 1806 is a node or device that receives downlink control information 1814, including but not limited to scheduling information (e.g., grants), synchronization or timing information, or other control information from another entity in the wireless communication network, such as the scheduling entity 1808.

[0149] In addition, uplink and / or downlink control information and / or traffic information can be divided into frames, subframes, time slots and / or symbols. As used herein, a symbol can refer to a time unit in which each subcarrier carries a resource element (RE) in an orthogonal frequency division multiplexing (OFDM) waveform. A time slot can carry 7 or 14 OFDM symbols. A subframe can refer to a duration of 1ms. Multiple subframes or time slots can be grouped together to form a single frame or radio frame. Of course, these definitions are not necessary, and any suitable scheme for organizing a waveform can be utilized, and the various time divisions of a waveform can have any suitable duration.

[0150] Typically, base stations 1808 may include a backhaul interface for communicating with a backhaul portion 1820 of the wireless communication system. Backhaul 1820 may provide a link between base stations 1808 and core network 1802. Furthermore, in some examples, a backhaul network may provide interconnectivity between respective base stations 1808. Various types of backhaul interfaces may be employed, such as a direct physical connection using any suitable transport network, a virtual network, and the like.

[0151] The core network 1802 can be part of the wireless communication system 1800 and can be independent of the radio access technology used in the RAN 1804. In some examples, the core network 1802 can be configured according to 5G standards (e.g., 5GC). In other examples, the core network 1802 can be configured according to 4G Evolved Packet Core (EPC) or any other suitable standard or configuration.

[0152] Figure 19 is a conceptual illustration of an example of a radio access network (RAN) 1900 according to some aspects of the present disclosure. In some examples, the RAN 1900 can be similar to the ones described above and in Figure 18 The geographic area covered by the RAN 1900 may be divided into cellular regions (cells) that may be uniquely identified by a user equipment (UE) based on an identity broadcast from an access point or base station. Figure 19 Macro cells 1902, 1904, and 1906, and small cell 1908 are shown, each of which may include one or more sectors (not shown). A sector is a sub-area of a cell. All sectors within a cell are served by the same base station. Radio links within a sector can be identified by a single logical identifier belonging to that sector. In a cell divided into sectors, multiple sectors within the cell may be formed by antenna groups, with each antenna responsible for communicating with UEs in a portion of the cell.

[0153] Various base station arrangements can be utilized. For example, Figure 19, two base stations 1910 and 1912 are shown in cells 1902 and 1904; and a third base station 1914 is shown, which controls a remote radio head (RRH) 1916 in cell 1906. That is, the base stations may have integrated antennas or may be connected to antennas or RRHs via feeder cables. In the example shown, cells 1902, 1904, and 1906 may be referred to as macro cells because base stations 1910, 1912, and 1914 support cells of larger size. In addition, base station 1918 is shown in a small cell 1908 (e.g., a micro cell, pico cell, femto cell, home base station, home node B, home eNode B, etc.), which may overlap with one or more macro cells. In this example, because base station 1918 supports cells of relatively small size, cell 1908 may be referred to as a small cell. The cell size design can be determined based on system design and component constraints.

[0154] It should be understood that the radio access network 1900 may include any number of wireless base stations and cells. In addition, relay nodes may be deployed to extend the size or coverage area of a given cell. Base stations 1910, 1912, 1914, 1918 provide wireless access points to the core network for any number of mobile devices. In some examples, base stations 1910, 1912, 1914, and / or 1918 may be similar to those described above and described in Figure 18 The base station / scheduling entity 108 shown in FIG.

[0155] Within the RAN 1900, a cell may include UEs that may communicate with one or more sectors of each cell. In addition, each base station 1910, 1912, 1914, and 1918 may be configured to provide an access point to the core network (e.g., a base station such as a RAN) for all UEs in the corresponding cell. Figure 1 ). For example, UEs 1922 and 1924 can communicate with base station 1910; UEs 1926 and 1928 can communicate with base station 1912; UEs 1930 and 1932 can communicate with base station 1914 through RRH 1916; and UE 1934 can communicate with base station 1918. In some examples, UEs 1922, 1924, 1926, 1928, 1930, 1932, 1934, 238, 1940, and / or 1942 can communicate with base stations described above and in Figure 18 The UE / scheduled entity 1806 shown in FIG. 1 is the same as that shown in FIG.

[0156] In some examples, an unmanned aerial vehicle (UAV) 1920, which can be a drone or a quadcopter, can be a mobile network node and can be configured to act as a UE. For example, UAV 1920 can operate within cell 1902 by communicating with base station 1910.

[0157] In another aspect of RAN 1900, sidelink signals can be used between UEs without having to rely on scheduling or control information from a base station. For example, two or more UEs (e.g., UEs 1926 and 1928) can communicate with each other using peer-to-peer (P2P) or sidelink signals 1927 without relaying the communication through a base station (e.g., base station 1912). In another example, UE 1938 is shown communicating with UEs 1940 and 1942. Here, UE 1938 can act as a scheduling entity or primary sidelink device, while UEs 1940 and 1942 can act as scheduled entities or non-primary sidelink devices (e.g., auxiliary sidelink devices). In yet another example, a UE can act as a scheduling entity in a device-to-device (D2D), peer-to-peer (P2P), or vehicle-to-vehicle (V2V) network and / or a mesh network. In the mesh network example, in addition to communicating with UE 1938 (e.g., acting as a scheduling entity), UEs 1940 and 1942 can also optionally communicate directly with each other. Thus, in a wireless communication network having scheduled access to time-frequency resources and having a cellular configuration, a P2P configuration, or a mesh configuration, a scheduling entity and one or more scheduled entities can communicate using the scheduled resources. In some examples, sidelink signals 1927 include sidelink traffic (e.g., a physical sidelink shared channel) and sidelink control (e.g., a physical sidelink control channel).

[0158] In the radio access network 1900, the ability of a UE to communicate while moving (regardless of its location) is called mobility. The various physical channels between the UE and the radio access network are usually established, maintained, and released under the control of the Access and Mobility Management Function (AMF). Figure 19 ) may include a Security Context Management Function (SCMF) that manages security contexts for both control plane and user plane functionalities and a Security Anchor Function (SEAF) that performs authentication.

[0159] Radio access network 1900 can utilize either DL-based mobility or UL-based mobility to implement mobility and handover (i.e., transferring a UE's connection from one radio channel to another). In a network configured for DL-based mobility, during a call with a scheduling entity, or at any other time, a UE can monitor various parameters of the signal from its serving cell and various parameters of neighboring cells. Depending on the quality of these parameters, the UE can maintain communication with one or more neighboring cells. During this time, if the UE moves from one cell to another, or if the signal quality from a neighboring cell exceeds the signal quality from the serving cell for a given amount of time, the UE can perform a handover or handover from the serving cell to a neighboring (target) cell. For example, UE 1924 (illustrated as a vehicle, although any suitable form of UE may be used) can move from the geographic area corresponding to its serving cell 1902 to the geographic area corresponding to neighboring cell 1906. When the signal strength or quality from neighboring cell 1906 exceeds the signal strength or quality of its serving cell 1902 for a given amount of time, UE 1924 can send a report message to its serving base station 1910 indicating this. In response, UE 1924 may receive a handover command, and the UE may undergo handover to cell 1906 .

[0160] In a network configured for UL-based mobility, the UL reference signal from each UE can be used by the network to select a serving cell for each UE. In some examples, base stations 1910, 1912, and 1914 / 1916 can broadcast a unified synchronization signal (e.g., a unified primary synchronization signal (PSS), a unified secondary synchronization signal (SSS), and a unified physical broadcast channel (PBCH)). UEs 1922, 1924, 1926, 1928, 1930, and 1932 can receive the unified synchronization signal, derive the carrier frequency and slot timing from the synchronization signal, and send an uplink pilot or reference signal in response to the derived timing. The uplink pilot signal sent by a UE (e.g., UE 1924) can be received simultaneously by two or more cells (e.g., base stations 1910 and 1914 / 1916) within the radio access network 1900. Each cell may measure the strength of the pilot signal, and the radio access network (e.g., one or more of base stations 1910 and 1914 / 1916 and / or a central node within the core network) may determine the serving cell of UE 1924. As UE 1924 moves through radio access network 1900, the network may continue to monitor the uplink pilot signals transmitted by UE 1924. When the signal strength or quality of the pilot signal measured by the neighboring cell exceeds the signal strength or quality measured by the serving cell, network 1900 may handover UE 1924 from the serving cell to the neighboring cell with or without notifying UE 1924.

[0161] Although the synchronization signals transmitted by base stations 1910, 1912, and 1914 / 1916 may be uniform, the synchronization signals may not identify a specific cell, but may identify a region of multiple cells operating on the same frequency and / or with the same timing. The use of regions in 5G networks or other next-generation communication networks implements an uplink-based mobility framework and improves the efficiency of both the UE and the network because the number of mobility messages that need to be exchanged between the UE and the network can be reduced.

[0162] In various embodiments, the air interface in the radio access network 1900 can utilize licensed spectrum, unlicensed spectrum, or shared spectrum. Licensed spectrum typically provides dedicated use of a portion of the spectrum with the help of a mobile network operator purchasing a license from a government regulator. Unlicensed spectrum provides shared use of a portion of the spectrum without the need for a government-authorized license. Although some technical regulations generally still need to be adhered to in order to access the unlicensed spectrum, generally, any operator or device can gain access. Shared spectrum may be between licensed and unlicensed spectrum, where technical regulations or restrictions may be required to access the spectrum, but the spectrum may still be shared by multiple operators and / or multiple RATs. For example, the holder of a license for a portion of the licensed spectrum may provide Licensed Shared Access (LSA) to share the spectrum with other parties (e.g., licensees determined to be conditionally eligible for access).

[0163] The air interface in the radio access network 1900 can utilize one or more multiplexing and multiple access algorithms to enable simultaneous communication of various devices. For example, the 5G NR specification utilizes orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) to provide multiple access for UL transmissions from UEs 1922 and 1924 to the base station 1910, and provides multiplexing for DL transmissions from the base station 1910 to one or more UEs 1922 and 1924. In addition, for UL transmissions, the 5G NR specification also provides support for discrete Fourier transform spread OFDM (DFT-s-OFDM) with CP (also known as single carrier FDMA (SC-FDMA)). However, within the scope of the present disclosure, multiplexing and multiple access are not limited to the above schemes and can be provided using time division multiple access (TDMA), code division multiple access (CDMA), frequency division multiple access (FDMA), sparse code multiple access (SCMA), resource spread multiple access (RSMA), or other suitable multiple access schemes. In addition, multiplexed DL transmissions from base station 1910 to UEs 1922 and 1924 may be provided using time division multiplexing (TDM), code division multiplexing (CDM), frequency division multiplexing (FDM), orthogonal frequency division multiplexing (OFDM), sparse code multiplexing (SCM), or other suitable multiplexing schemes.

[0164] The air interface in the radio access network 1900 may further utilize one or more duplexing algorithms. Duplexing refers to a point-to-point communication link in which both endpoints can communicate with each other in both directions. Full-duplexing means that both endpoints can communicate with each other simultaneously. Half-duplexing means that only one endpoint can send information to the other endpoint at a time. In wireless links, full-duplex channels typically rely on physical isolation between the transmitter and receiver and appropriate interference cancellation techniques. Full-duplex emulation is typically implemented for wireless links by utilizing frequency division duplexing (FDD) or time division duplexing (TDD). In FDD, transmissions in different directions operate on different carrier frequencies. In TDD, time division multiplexing is used to separate transmissions in different directions on a given channel. That is, sometimes the channel is dedicated to transmissions in one direction, while at other times it is dedicated to transmissions in the other direction, where the direction can change very quickly, for example, several times per time slot.

[0165] Will refer to Figure 3 Various aspects of the present disclosure are described herein using an OFDM waveform, an example of which is schematically illustrated in FIG. Those skilled in the art will appreciate that various aspects of the present disclosure can be applied to SC-FDMA waveforms in substantially the same manner as described herein below. That is, while some examples of the present disclosure may focus on OFDM links for clarity, it will be appreciated that the same principles can also be applied to SC-FDMA waveforms.

[0166] Figure 20 is a diagram illustrating wireless resources in an air interface utilizing orthogonal frequency division multiplexing (OFDM) according to some aspects of the present disclosure. Figure 20 , an expanded view of an exemplary DL subframe (SF) 2002A is shown, illustrating an OFDM resource grid. However, as will be readily appreciated by those skilled in the art, the PHY transmission structure for any particular application may differ from the example described herein, depending on any number of factors. Here, time is horizontally measured in units of OFDM symbols, while frequency is vertically measured in units of subcarriers.

[0167] Resource grid 2004 can be used to schematically represent the time-frequency resources for a given antenna port. That is, in a multiple-input, multiple-output (MIMO) implementation with multiple antenna ports available, corresponding multiple resource grids 2004 can be used for communication. Resource grid 2004 is divided into multiple resource elements (REs) 2006. An RE (e.g., 1 subcarrier x 1 symbol) is the smallest discrete portion of the time-frequency grid and contains a single complex value representing the data of a physical channel or signal. Depending on the modulation utilized in a particular implementation, each RE can represent one or more information bits. In some examples, a block of REs can be referred to as a physical resource block (PRB), or more simply, a resource block (RB) 2008, which contains any suitable number of contiguous subcarriers in the frequency domain. In one example, an RB can contain 12 subcarriers, regardless of the parameter set used. In some examples, depending on the parameter set, an RB can include any suitable number of contiguous OFDM symbols in the time domain. Within this disclosure, it is assumed that a single RB (such as RB 2008) corresponds entirely to a single communication direction (transmission or reception for a given device).

[0168] Scheduling a UE (e.g., a scheduled entity) for downlink or uplink transmission typically involves scheduling one or more resource elements 2006 within one or more bandwidth parts (BWPs), where each BWP includes two or more contiguous or consecutive RBs. Thus, a UE typically utilizes only a subset of the resource grid 2004. In some examples, an RB can be the smallest unit of resources that can be allocated to a UE. Therefore, the more RBs scheduled for a UE and the higher the modulation scheme selected for the air interface, the higher the data rate for the UE.

[0169] In this illustration, RB 2008 is shown as occupying less than the entire bandwidth of subframe 2002A, with some subcarriers shown above and below RB 2008. In a given embodiment, subframe 2002A may have a bandwidth corresponding to any number of one or more RBs 2008. Furthermore, in this illustration, RB 2008 is shown as occupying less than the entire duration of subframe 2002A, although this is merely one possible example.

[0170] Each 1ms subframe 2002A may consist of one or more adjacent time slots. Figure 20In the example shown, as an illustrative example, one subframe 2002B includes four time slots 2010. In some examples, a time slot can be defined based on a specified number of OFDM symbols with a given cyclic prefix (CP) length. For example, a time slot can include 7 or 14 OFDM symbols with a nominal CP. Additional examples may include mini-slots with shorter durations (e.g., one or two OFDM symbols). In some cases, these mini-slots can be transmitted, occupying resources scheduled for ongoing time slot transmissions by the same or different UEs.

[0171] An enlarged view of one of the time slots 2010 shows time slot 2010, which includes a control region 2012 and a data region 2014. Typically, control region 2012 may carry a control channel (e.g., PDCCH), while data region 2014 may carry a data channel (e.g., PDSCH or PUSCH). Of course, a time slot may contain all DL, all UL, or at least one DL portion and at least one UL portion. Figure 20 The simple structure shown is merely exemplary in nature, and different slot structures may be utilized and may include one or more of each of the control region(s) and the data region(s).

[0172] Despite Figure 20 Although not shown, various REs 2006 within RB 2008 may be scheduled to carry one or more physical channels, including control channels, shared channels, data channels, etc. Other REs 2006 within RB 2008 may also carry pilot or reference signals, including but not limited to demodulation reference signals (DMRS) or sounding reference signals (SRS). These pilot or reference signals may be provided to a receiving device to perform channel estimation of the corresponding channels, which may enable coherent demodulation / detection of control and / or data channels within RB 2008.

[0173] In DL transmission, a transmitting device (e.g., a scheduling entity) may allocate one or more REs 2006 (e.g., within a control region 2012) to carry DL control information to one or more scheduled entities, including: one or more DL control channels, such as PBCH; Physical Control Format Indicator Channel (PCFICH); Physical Hybrid Automatic Repeat Request (HARQ) Indicator Channel (PHICH); and / or Physical Downlink Control Channel (PDCCH). The transmitting device may also allocate one or more REs 2006 to carry other DL signals, such as: DMRS; Phase Tracking Reference Signal (PT-RS); Channel State Information-Reference Signal (CSI-RS); Primary Synchronization Signal (PSS); and Secondary Synchronization Signal (SSS).

[0174] The synchronization signals PSS and SSS, and in some examples the PBCH and PBCH DMRS, may be sent in a synchronization signal block (SSB) comprising three consecutive OFDM symbols numbered in ascending order from 0 to 3 via a time index. In the frequency domain, the SSB may be spread over 240 consecutive subcarriers, numbered in ascending order from 0 to 239 via a frequency index. Of course, the present disclosure is not limited to this particular SSB configuration. Other non-limiting examples within the scope of the present disclosure may utilize more or less than two synchronization signals; may include one or more supplemental channels in addition to the PBCH; may omit the PBCH; and / or may utilize a different number of symbols and / or non-contiguous symbols for the SSB.

[0175] The PCFICH provides information to assist the receiving device in receiving and decoding the PDCCH. The PDCCH carries downlink control information (DCI), which includes but is not limited to power control commands, scheduling information, grants and / or RE assignments for DL and UL transmissions. The PHICH carries HARQ feedback transmissions such as acknowledgements (ACKs) or negative acknowledgements (NACKs). HARQ is a technology well known to those of ordinary skill in the art, in which the integrity of packet transmissions can be checked on the receiving side, for example, using any suitable integrity check mechanism (such as a checksum or cyclic redundancy check (CRC)) to ensure accuracy. If the integrity of the transmission is confirmed, an ACK can be sent, while if it is not confirmed, a NACK can be sent. In response to the NACK, the transmitting device can issue a HARQ retransmission, which can implement chase combining, incremental redundancy, etc.

[0176] In an UL transmission, a transmitting device (e.g., a scheduled entity) may utilize one or more REs 2006 to carry UL control information including one or more UL control channels (such as a physical uplink control channel (PUCCH)) to a scheduling entity. The UL control information may include various packet types and categories, including pilots, reference signals, and information configured to enable or assist in decoding uplink data transmissions. For example, the UL control information may include a DMRS or an SRS. In some examples, the control information may include a scheduling request (SR), i.e., a request to a scheduling entity for scheduling uplink transmissions. Here, in response to the SR sent on the control channel, the scheduling entity may send downlink control information that may schedule resources for uplink packet transmissions. The UL control information may also include HARQ feedback, channel state feedback (CSF), or any other suitable UL control information.

[0177] In addition to control information, one or more REs 2006 may be allocated for user data or traffic data (e.g., within the data region 2014). This traffic may be carried on one or more traffic channels, such as the PDSCH for DL transmissions or the physical uplink shared channel (PUSCH) for UL transmissions. In some examples, one or more REs 2006 within the data region 2014 may be configured to carry a SIB (e.g., SIB1), which carries system information that may enable access to a given cell.

[0178] These physical channels are typically multiplexed and mapped onto transmit channels for processing at the medium access control (MAC) layer. Transport channels carry information blocks called transport blocks (TBs). The transport block size (TBS), which corresponds to the number of information bits, can be a controlled parameter based on the number of RBs and the modulation and coding scheme (MCS) in a given transmission.

[0179] References Figures 18 to 20 The channels or carriers described are not necessarily all channels or carriers that may be utilized between a scheduling entity and a scheduled entity, and one of ordinary skill in the art will recognize that other channels or carriers are utilized in addition to those shown, such as other traffic, control, and feedback channels.

[0180] In some networks, a base station can use dynamic scheduling or semi-persistent scheduling (SPS) to schedule a UE. Dynamic scheduling can involve using DCI to schedule individual transmissions or receptions (e.g., on the PDSCH or PUSCH). For example, a base station can use a first DCI to schedule a first PDSCH transmission, a second DCI to schedule a second PDSCH transmission, and so on.

[0181] In contrast, for SPS, the base station can use a single DCI to schedule multiple transmissions (e.g., on the PDSCH). In some embodiments, the base station sends an RRC message to configure SPS (e.g., for a specific cell and a specific BWP). The base station can then issue a DCI to activate SPS.

[0182] The SPS configuration indicates the SPS periodicity between SPS opportunities. Thus, the SPS configuration can schedule multiple SPS opportunities at the indicated period. In some examples, the periodicity can refer to the system frame number (SFN) and the subframe number of the DCI that initializes the SPS.

[0183] Therefore, the UE can monitor the PDSCH at the SPS opportunity according to the scheduled SPS periodicity to periodically obtain data from the base station. At a certain point in time, the base station can issue a DCI to deactivate SPS. In addition, the base station can issue a DCI to reactivate SPS.

[0184] The present disclosure relates in some aspects to sending information in multiple communication opportunities of an SPS opportunity. Here, an SPS opportunity is defined as including multiple communication opportunities. For example, a given SPS opportunity may be allocated several time slots (hereinafter referred to as time slots), wherein each communication opportunity is associated with a corresponding time slot (or a corresponding subset of time slots). The base station may therefore send first information via a first communication opportunity of an SPS opportunity and send second information via a second communication opportunity of the same SPS opportunity. A wireless communication device (e.g., UE) may perform blind decoding on all communication opportunities to recover information sent in any communication opportunity.

[0185] Figure 21 FIG2 is a conceptual illustration of an example of multiple communication opportunities for an SPS opportunity 2100 according to some aspects of the present disclosure. Three SPS opportunities are shown, separated in time by a time period T based on the configured SPS periodicity. SPS schedules DL traffic to arrive at a nominal arrival time (e.g., nominal arrival time 2102).

[0186] In practice, the received data may experience jitter. Figure 21 Shows the requirement of non-insignificant jitter and low latency delivery near the nominal arrival time (at delivery T V For example, a DL transmission may be received before the nominal arrival time (e.g., as shown by actual arrival 2104), after the nominal arrival time, or partially overlapping with the nominal arrival time as shown. In multi-opportunity SPS, where a base station transmits based on packet arrivals on one communication opportunity (e.g., corresponding to the nominal arrival time), each SPS opportunity provides the UE with multiple communication opportunities to receive DL traffic.

[0187] like Figure 21 As shown, in this example, each SPS opportunity is defined as having (e.g., including) three communication opportunities (e.g., as shown by the three lines 2106 of the third SPS opportunity). In other examples, a different number of communication opportunities may be used. The UE may Figure 21 Therefore, the UE will be able to successfully receive the service in any of the three communication opportunities. Therefore, multi-opportunity SPS can be used to adapt to jittery periodic DL services (e.g., Figure 21 shown).

[0188] Multi-opportunity SPS may provide benefits over using multiple SPS configurations (e.g., where a base station establishes multiple SPS allocations, each SPS allocation is scheduled on different resources). For example, compared to scenarios using multiple SPS configurations, multi-opportunity SPS may use a smaller number of HARQ processes, use a smaller number of HARQ responses, and have lower overhead in terms of RRC configuration and DCI activation / deactivation.

[0189] In some examples, communication opportunities within an SPS opportunity can be homogeneous in terms of radio resource allocation. For example, different communication opportunities within the same SPS opportunity can have the same frequency domain resource allocation (FDRA), the same start and length indicator vector (SLIV), and the same MCS. This approach can be advantageous when sending fixed-size packets with jittery arrival. For example, a smaller DCI (smaller number of bits) can be used for activation / reactivation because unique information is not required for each communication opportunity.

[0190] Using the same type of radio resource allocation for different communication opportunities within an SPS opportunity can also provide other benefits. For example, listen-before-talk (LBT) uncertainty at the base station can be mitigated by allocating communication opportunities to different LBT bandwidths (BWs) in the 5 GHz / 6 GHz unlicensed band. In addition, by allocating communication opportunities with different receive (RX) beams, more flexible scheduling can be supported (e.g., frequency range 2 (FR2) can be used). Moreover, time slot aggregation can be enabled on some communication opportunities to provide ultra-reliable packets.

[0191] In some scenarios, a UE may need to carry more than one periodic flow. For example, an Industrial IoT (IIoT) UE may be connected to more than one sensor and / or actuator. In addition, the associated concurrent service flows may have different periods and / or different latency requirements.

[0192] The present disclosure, in some aspects, relates to sending information on multiple communication opportunities of an SPS opportunity.For example, a base station may send data on a first communication opportunity and a second communication opportunity of the same SPS opportunity.

[0193] In some aspects, the present disclosure also relates to sending information on multiple communication sub-opportunities for each SPS communication opportunity. This may be referred to as SPS DL with a large number of opportunities.

[0194] Figure 22 is a conceptual illustration of an example of multiple communication opportunities and communication sub-opportunities of an SPS opportunity 2200 according to some aspects of the present disclosure. Figure 21In this example, each SPS opportunity is defined by (e.g., includes) three communication opportunities (e.g., as represented by the three columns 2202 of the third SPS opportunity). In addition, each communication opportunity is defined by (e.g., includes) two communication sub-opportunities (e.g., as represented by the two rows 2204 of the third SPS opportunity).

[0195] The base station may transmit on any one or more communication opportunities. The UE may be configured via RRC to support multi-opportunity SPS DL. The parameter s (s≥1) may specify the number of communication opportunities starting from an offset in a given period.

[0196] In some examples, one HARQ process may be used per communication opportunity. The UE may perform blind decoding of the SPS PDSCH at each communication opportunity and report s-bit ACK / NACK (A / N) feedback. Based on the A / N feedback, the base station may schedule retransmissions on a per-opportunity basis using dynamic grants (DGs).

[0197] In some examples, for a large number of "opportunistic" opportunities, the base station may send one transport block (TB) per communication opportunity. In some examples, for a large number of opportunities, the base station may send multiple TBs per communication opportunity. In some examples, in SPS opportunities, the base station may send multiple transport blocks (TBs) on more than one communication opportunity.

[0198] As discussed herein, using communication opportunities can provide lower signaling overhead than other techniques. However, using communication opportunities can result in additional overhead associated with a HARQ process for each opportunity and A / N feedback for each opportunity. However, using communication opportunities can still result in lower RRC configuration (L3) overhead and lower DCI activation / reactivation (L1) overhead compared to multiple SPS configurations requiring DCI and separate RRC messaging for multiple SPS processes.

[0199] In some examples, communication opportunities (e.g., for a given SPS or a given SPS opportunity) can be homogeneous. For example, the communication opportunities can share a common TDRA, a common FDRA (for FDM, including different component carriers), antenna ports and / or transmission configuration indicators (TCI) (for spatial division multiplexing, SDM), or a combination thereof.

[0200] In some examples, communication opportunities can be heterogeneous. The use of heterogeneous communication opportunities may involve using more bits in the activation / reactivation DCI than in homogeneous scenarios. However, the L3 and L1 signaling overhead may still be lower than the L3 and L1 signaling overhead required for a multi-SPS configuration.

[0201] Figure 23This figure is a conceptual illustration of an example hybrid automatic repeat request (HARQ) process for multiple communication opportunities for an SPS opportunity, according to aspects of the present disclosure. Different HARQ processes (HARQ 0, HARQ 1, and HARQ 2) are used for different communication opportunities. In this example, for the same type of initial transmission, all communication opportunities are configured / activated with the same amount of radio resources. That is, the communication opportunities are simply shifted in time. In addition, the UE uses a single PUCCH to transmit s-bit A / N feedback.

[0202] In this example, the base station sends data via the first communication opportunity (opportunity 1) and the third communication opportunity (opportunity 3). The second communication opportunity is discontinuous transmission (DTX). Since the UE can decode the first communication opportunity but cannot decode the second and third communication opportunities, the UE sends corresponding (A / N) feedback in PUCCH 2302, as shown in FIG. Figure 23 In response, the base station schedules retransmission for the third communication opportunity. Specifically, the base station sends a DCI 2304 that schedules retransmission of HARQ2 in the PDSCH 2306.

[0203] Figure 23 The multi-opportunity SPS can be activated / deactivated by a compact-sized DCI. Figure 24 2402 is a conceptual illustration of an example of DCI for multiple communication opportunities for activating / reactivating SPS opportunities according to aspects of the present disclosure. In this example, SLIV is applied to all s time slots starting from the time slot indicated by K0 in the SPS activation DCI 2402 (i.e., all communication opportunities use the same SLIV). Additionally, in this example, the communication opportunities use the same FDRA, the same MCS(s), and the same TCI. The indicated K1 timing may be relative to the first communication opportunity (e.g., Figure 24 as shown) or last opportunity to communicate.

[0204] Figure 25 25 is a conceptual illustration of an example of HARQ feedback and HARQ retransmission scheduling for multiple communication opportunities in an SPS opportunity according to some aspects of the present disclosure. After receiving multiple NACKs, the base station can use composite DCI 2502 to schedule multiple PDSCH retransmissions. To reduce overhead, the composite DCI 2502 can have a single CRC, a common MCS (e.g., because the retransmissions are to the same UE), a common FDRA, a common TCI, and / or the same SLIV in different time slots.

[0205] The DCI 2502 may include incremental HARQ process ID wraparound within the HARQ process ID space of the SPS. The DCI 2502 may include a new data indicator (NDI) to indicate which communication opportunity is being retransmitted due to consecutive HARQ ID restrictions. This may assume a pre-configured redundancy vector (RV) sequence. Figure 25 In the example of , 4 bits (eg, 2 bits for HARQ process ID=0 and 2 bits for NDI-based retransmission indication for the remaining HARQ processes) may be used to indicate retransmissions to HARQ 0 and to HARQ2.

[0206] As Figure 25 As an alternative to homogeneous approaches, SPS may have heterogeneous (with respect to radio resource allocation) communication opportunities within an SPS opportunity. Figure 26 is a conceptual illustration of an example of a HARQ process (in this example, HARQ0) for a multi-slot communication opportunity covering an SPS opportunity according to some aspects of the present disclosure. Specifically, Figure 26 It is shown that the first communication opportunity supports time slot aggregation over two time slots. Time slot aggregation of more than two time slots can also be used.

[0207] exist Figure 26 In the example of FIG, retransmission DGs (e.g., in DCI 2602) for the same HARQ ID may apply the same level of slot aggregation. Other examples of heterogeneous operation include using different MCSs, using different SLIVs, or both. In some aspects, heterogeneous operation may involve using a larger DCI for activation / reactivation (e.g., to specify different parameters for different communication opportunities).

[0208] NR operation in the unlicensed band may be referred to as NR-U. For reduced capacity NR-U UEs operating with a BW ≤ 20 MHz and served by a wideband (e.g., 80 MHz BW) base station, the communication opportunities of the SPS opportunities may be heterogeneous with respect to the transmission frequency band. By using different LBT bandwidths for the communication opportunities, the listen-before-talk (LBT) ambiguity at the base station can be alleviated. The FDRA (e.g., frequency band) of the corresponding communication opportunity can be set / reset through DCI activation / reactivation. Figure 27 2 is a conceptual illustration of an example of different communication opportunities for transmitting SPS opportunities via different radio frequency (RF) bands according to some aspects of the present disclosure. In this example, the base station transmits communication opportunity 1 2702 in one RF band and transmits communication opportunity 3 2704 in another RF band. Thus, for different communication opportunities, the UE can monitor different RF bands.

[0209] For UEs in FR2 (or some other mmW bands), the communication opportunities of SPS occasions may be heterogeneous in the spatial domain (e.g., the UE may tune to different beams transmitted by the base station). The beam to be used may be set / reset by DCI activation / reactivation. Figure 28 28 is a conceptual illustration of an example of different communication opportunities for transmitting SPS opportunities via different RF beams according to some aspects of the present disclosure. In this example, the base station transmits communication opportunity 1 via one RF beam 2802 and transmits communication opportunity 3 via another RF beam 2804. Thus, for different communication opportunities, the UE can monitor different spatial domains.

[0210] As discussed above, the present disclosure relates in some aspects to the use of communication sub-opportunities. For example, t (t ≥ 1) sub-opportunities may be defined for each communication opportunity. In some examples, among the t communication sub-opportunities, the base station may select one of the sub-opportunities of each communication opportunity to transmit. In other examples, the base station may select more than one sub-opportunity of each communication opportunity to transmit. For each communication opportunity, the UE may perform blind decoding at each sub-opportunity. In some examples, the UE may select the sub-opportunity with the greatest PDSCH decoding probability for the HARQ combination.

[0211] By using communication sub-opportunities, the UE can be configured with a large number of DL SPS opportunities. The base station can send TBs on any sub-opportunity (not limited to one). One HARQ process can be used for each sub-opportunity. The UE can report s*t A / Ns per SPS opportunity.

[0212] The above-mentioned communication sub-opportunities can be assigned different FDRAs. This can be used for frequency domain diversity (including different component carriers (CCs)). For example, different communication sub-opportunities can be used at different LBT BWs to alleviate LBT uncertainty in the unlicensed band. DCI can be issued on a CC to activate / reactivate communication sub-opportunities in other CCs. The communication sub-opportunities discussed herein can be assigned to different beams (for example, by using different antenna ports or different TCIs). The communication sub-opportunities discussed herein are assigned to different FDRAs and different beams.

[0213] Figure 29 2900 is a signaling diagram illustrating SPS communication 2900 in a wireless communication network including a UE 2902 and a BS 2904. In some examples, the UE 2902 may correspond to Figure 18 The scheduled entity 1826 (eg, UE, etc.) or Figure 19In some examples, BS 2904 may correspond to one or more of UEs 1922, 1924, 1926, 1928, 1930, 1932, 1934, 1938, 1940, or 1942. Figure 18 Scheduling Entity 1828 or Figure 19 One or more of base stations 1910, 1912, 1914 or 1916.

[0214] exist Figure 29 At step 2906, BS 2904 configures the SPS. In some examples, the SPS configuration may specify that each SPS opportunity includes multiple communication opportunities.

[0215] At step 2908, BS 2904 sends an RRC message including the SPS configuration.

[0216] At step 2910, BS 2904 activates the SPS.

[0217] At step 2912, BS 2904 sends a DCI to UE 2902 indicating that the configured SPS is being activated. In some examples, the DCI may specify that data may be sent in multiple communication opportunities of the SPS opportunity.

[0218] At step 2914, BS 2904 generates DL data for a first SPS opportunity including a plurality of communication opportunities.

[0219] At step 2916, BS 2904 transmits a first SPS opportunity. The first SPS opportunity includes data in a plurality of communication opportunities (eg, as discussed herein).

[0220] At step 2918, UE 2902 decodes the first SPS opportunity and determines whether each communication opportunity is successfully decoded. Figure 19 ) A separate HARQ process can be performed for each communication opportunity.

[0221] At step 2920, the UE 2902 sends out a PUCCH message including a corresponding acknowledgement (eg, a positive acknowledgement (ACK) or a negative acknowledgement (NACK)) for each communication opportunity.

[0222] At step 2922, if the PUCCH includes any NACK, the BS 2904 schedules a retransmission for each corresponding communication opportunity.

[0223] At step 2924, BS 2904 issues a DCI, if applicable, that schedules a corresponding retransmission for each communication opportunity that was NACKed.

[0224] At step 2926, BS 2904 sends each scheduled retransmission (eg, on the PDSCH), if applicable.

[0225] At step 2928, the UE 2902 receives and decodes each scheduled retransmission (e.g., on the PDSCH), if applicable. If necessary, the HARQ process described above may be repeated if the UE 2902 has not successfully decoded all communication opportunities that include data.

[0226] At step 2930, BS 2904 generates DL data for a second SPS opportunity including a plurality of communication opportunities.

[0227] At step 2932, BS 2904 transmits a second SPS opportunity. The second SPS opportunity includes data from multiple communication opportunities (e.g., as discussed herein). As represented by line 2934, BS 2904 transmits the second SPS opportunity (relative to the first SPS opportunity) according to the SPS periodicity specified by the SPS configuration.

[0228] At step 2936, the UE 2902 decodes the second SPS opportunity and determines whether each communication opportunity is successfully decoded. Likewise, the UE 1032 may perform a separate HARQ process for each communication opportunity.

[0229] At step 2938, the UE 2902 sends out a PUCCH message including a corresponding acknowledgement (eg, ACK or NACK) for each communication opportunity.

[0230] Figure 30 3014 is a diagram illustrating an example of a hardware implementation of a wireless communication device 3000 employing a processing system 3014. For example, the wireless communication device 3000 may be a user equipment (UE) or other device configured to wirelessly communicate with a base station, such as Figures 18 to 29 According to various aspects of the present disclosure, an element or any portion of an element or any combination of elements may be implemented using a processing system 3014 including one or more processors 3004. In some embodiments, the wireless communication device 3000 may correspond to Figure 19 The scheduled entity 1806 (eg, UE, etc.), Figure 19 UE 1922, 1924, 1926, 1928, 1930, 1932, 1934, 1938, 1940 or 1942 or Figure 19 One or more of UE 1902.

[0231] The wireless communication device 3000 can be implemented using a processing system 3014 including one or more processors 3004. Examples of the processor 3004 include a microprocessor, a microcontroller, a digital signal processor (DSP), a field programmable gate array (FPGA), a programmable logic device (PLD), a state machine, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functionalities described throughout this disclosure. In various examples, the wireless communication device 3000 can be configured to perform any one or more of the functions described herein. That is, the processor 3004 utilized in the wireless communication device 3000 can be used to implement any one or more of the processes and procedures described below.

[0232] In this example, the processing system 3014 can be implemented using a bus architecture, which is generally represented by bus 3002. Depending on the specific application and overall design constraints of the processing system 3014, the bus 3002 may include any number of interconnecting buses and bridges. The bus 3002 communicatively couples various circuits including one or more processors (generally represented by processor 3004), memory 3005, and computer-readable media (generally represented by computer-readable media 3006). The bus 3002 may also link various other circuits known in the art, such as timing sources, peripherals, voltage regulators, and power management circuits, and therefore will not be described in any further detail. The bus interface 3008 provides an interface between the bus 3002 and the transceiver 3010, and between the bus 3002 and the interface 3030. The transceiver 3010 provides a communication interface or component for communicating with various other devices via a wireless transmission medium. In some examples, the wireless communication device may include two or more transceivers 3010, each transceiver being configured to communicate with a corresponding network type (e.g., terrestrial or non-terrestrial). The interface 3030 provides a communication interface or component for communicating with various other devices and equipment (e.g., other devices housed in the same device as the wireless communication device or other external devices) via an internal bus or an external transmission medium (such as an Ethernet cable). Depending on the nature of the device, the interface 3030 may include a user interface (e.g., a keyboard, display, speaker, microphone, joystick). Of course, such a user interface is optional and may be omitted in some examples, such as IoT devices.

[0233] Processor 3004 is responsible for managing bus 3002 and general processing, including executing software stored on computer-readable medium 3006. When executed by processor 3004, this software causes processing system 3014 to perform the various functions described below for any particular device. Computer-readable medium 3006 and memory 3005 can also be used to store data that is manipulated by processor 3004 when executing software.

[0234] One or more processors 3004 in the processing system can execute software. Software should be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, execution threads, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise. The software may reside on a computer-readable medium 3006.

[0235] Computer-readable medium 3006 may be a non-transitory computer-readable medium. Non-transitory computer-readable media include, for example, magnetic storage devices (e.g., hard disks, floppy disks, magnetic strips), optical disks (e.g., compact disks (CDs) or digital versatile disks (DVDs)), smart cards, flash memory devices (e.g., memory cards, memory sticks, or key disks), random access memory (RAM), read-only memory (ROM), programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), registers, removable disks, and any other suitable medium for storing software and / or instructions that can be accessed and read by a computer. Computer-readable medium 3006 may reside in processing system 3014, be external to processing system 3014, or be distributed across multiple entities including processing system 3014. Computer-readable medium 3006 may be embodied in a computer program product. As an example, a computer program product may include a computer-readable medium in packaging material. Those skilled in the art will recognize how best to implement the described functionality presented throughout this disclosure depending on the specific application and the overall design constraints imposed on the entire system.

[0236] The wireless communication device 3000 may be configured to perform any one or more of the operations described herein (e.g., as described above in conjunction with Figures 18 to 29 Describe and combine as follows Figure 31 In some aspects of the present disclosure, the processor 3004, as utilized in the wireless communication device 3000, may include circuits configured for various functions.

[0237] The processor 3004 may include a communication and processing circuit 3041. The communication and processing circuit 3041 may include one or more hardware components that provide a physical structure for performing various processes related to wireless communication described herein (e.g., signal reception and / or signal transmission). The communication and processing circuit 3041 may also include one or more hardware components that provide a physical structure for performing various processes related to signal processing described herein (e.g., processing received signals and / or processing signals for transmission). In some examples, the communication and processing circuit 3041 may include two or more transmit / receive chains, each configured to process signals of a different RAT (or RAN) type. The communication and processing circuit 3041 may also be configured to execute communication and processing software 3051 included on the computer-readable medium 3006 to implement one or more functions described herein.

[0238] In some embodiments where communication involves receiving information, the communication and processing circuitry 3041 can obtain information from a component of the wireless communication device 3000 (e.g., from the transceiver 3010, which receives the information via radio frequency signaling or some other type of signaling appropriate to the applicable communication medium), process (e.g., decode) the information, and output the processed information. For example, the communication and processing circuitry 3041 can output the information to another component of the processor 3004, the memory 3005, or the bus interface 3008. In some examples, the communication and processing circuitry 3041 can receive one or more of a signal, a message, other information, or any combination thereof. In some examples, the communication and processing circuitry 3041 can receive the information via one or more channels. In some examples, the communication and processing circuitry 3041 can include functionality for receiving components.

[0239] In some embodiments where communication involves sending (e.g., transmitting) information, the communication and processing circuitry 3041 can obtain information (e.g., from another component of the processor 3004, the memory 3005, or the bus interface 3008), process (e.g., encode) the information, and output the processed information. For example, the communication and processing circuitry 3041 can output information to the transceiver 3010 (e.g., the transceiver sends the information via radio frequency signaling or some other type of signaling suitable for an applicable communication medium). In some examples, the communication and processing circuitry 3041 can send one or more of a signal, a message, other information, or any combination thereof. In some examples, the communication and processing circuitry 3041 can send information via one or more channels. In some examples, the communication and processing circuitry 3041 can include functionality for sending components (e.g., for transmitting components).

[0240] The processor 3004 may include an SPS processing circuit 3042 configured to perform the SPS processing-related operations discussed herein (e.g., determining the configuration of the communication opportunity or sub-opportunity to be used for each SPS opportunity). The SPS processing circuit 3042 may include functionality of components for receiving SPS messages. The SPS processing circuit 3042 may also be configured to execute SPS processing software 3052 included on the computer-readable medium 3006 to implement one or more functions described herein.

[0241] The processor 3004 may include a decoding circuit 3043 configured to perform decoding-related operations as discussed herein. The decoding circuit 3043 may include functionality of components for decoding downlink information (e.g., decoding a communication opportunity or sub-opportunity). The decoding circuit 3043 may also be configured to execute decoding software 3053 included on the computer-readable medium 3006 to implement one or more functions described herein.

[0242] Figure 31 is a flow chart illustrating an exemplary process 3100 for a wireless communication system according to some aspects of the present disclosure. As described below, some or all of the illustrated features may be omitted in certain implementations within the scope of the present disclosure, and some illustrated features may not be required for implementation of all embodiments. In some examples, process 3100 may be performed by Figure 30 3100. In some aspects, the wireless communication device may be a user equipment. In some examples, the process 3100 may be performed by any suitable device or component for performing the functions or algorithms described below.

[0243] At block 3102, the wireless communication device may receive a message from a base station indicating the periodicity between configured semi-persistent scheduling (SPS) opportunities. Figure 29 The SPS processing circuitry 2942 is shown and described in cooperation with the communication and processing circuitry 2941 and the transceiver 2910 to receive an RRC message from a base station, wherein the RRC message schedules SPS.

[0244] At block 3104, the wireless communication device may receive a transmission from the base station for a first SPS opportunity in the SPS opportunities, the first SPS opportunity including a plurality of communication opportunities. Figure 30 The SPS processing circuitry 2942 is shown and described in cooperation with the communication and processing circuitry 2941 and the transceiver 1310 to receive SPS opportunities from a base station (according to an SPS period), wherein the SPS opportunities include a plurality of communication opportunities.

[0245] At block 3106, the wireless communication device may decode downlink information included in at least two of the plurality of communication opportunities. Figure 29 The decoding circuitry 2943 is shown and described to decode the SPS opportunity to recover information included in the multiple communication opportunities of the SPS opportunity.

[0246] In some examples, the downlink information may include: first information in a first communication opportunity among the plurality of communication opportunities; and second information in a second communication opportunity among the plurality of communication opportunities. The first communication opportunity may include a first communication sub-opportunity, and the second communication opportunity may include a second communication sub-opportunity.

[0247] In some examples, the process may also include performing a first hybrid automatic repeat request (HARQ) process on the first information; and performing a second HARQ process on the second information in the second communication opportunity. In some examples, the process may also include sending a physical uplink control channel (PUSCH) message to the base station, the PUSCH message including a first acknowledgment of the first information; and a second acknowledgment of the second information. In some aspects, the process may also include receiving downlink control information (DCI) from the base station after sending the PUSCH message. The DCI may indicate at least one of the following: a first resource for retransmission of the first information, a second resource for retransmission of the second information, or a combination thereof.

[0248] In some examples, the first information is for a first transmission block, and the second information is for a second transmission block. In some examples, the first communication opportunity is two time slots in length, and the second communication opportunity is one time slot in length. In some examples, the process may also include generating a first acknowledgment of the first information; and generating a second acknowledgment of the second information.

[0249] In some examples, receiving a transmission from the base station for a first one of the SPS opportunities may include: receiving first information in the first communication opportunity on a first radio frequency (RF) band; and receiving second information in the second communication opportunity on a second RF band different from the first RF band. In some examples, receiving a transmission from the base station for a first one of the SPS opportunities may include: receiving the first information in the first communication opportunity via a first (RF) beam; and receiving the second information in the second communication opportunity on a second RF beam different from the first RF beam.

[0250] In some examples, the first communication opportunity and the second communication opportunity may include multiple communication sub-opportunities, and decoding the downlink information included in at least two of the multiple communication opportunities may include decoding information included in at least two of the multiple communication sub-opportunities. In some examples, the process may also include performing a first hybrid automatic repeat request (HARQ) process on the first communication sub-opportunity of the multiple communication sub-opportunities; and performing a second HARQ process on the second communication sub-opportunity of the multiple communication sub-opportunities. In some examples, receiving a transmission for a first SPS opportunity in the SPS opportunity from the base station may include receiving first information in the first communication sub-opportunity on a first radio frequency (RF) band and receiving second information in the second communication sub-opportunity on a second RF band different from the first RF band. In some examples, receiving a transmission for the first SPS opportunity in the SPS opportunity from the base station may include receiving the first information in the first communication sub-opportunity via a first (RF) beam and receiving the second information in the second communication sub-opportunity on a second RF beam different from the first RF beam.

[0251] In some examples, the process may further include receiving downlink control information (DCI) from the base station. The DCI may indicate at least one of: a start and length indicator (SLIV) for the plurality of communication opportunities, a frequency domain resource allocation (FDRA) for the plurality of communication opportunities, a time domain resource allocation (TDRA) for the plurality of communication opportunities, a modulation and coding scheme (MCS) for the plurality of communication opportunities, a transmission configuration indicator (TCI) for the plurality of communication opportunities, or any combination thereof.

[0252] In some examples, the process may also include receiving downlink control information (DCI) from the base station. The DCI may indicate at least one of the following: a first start and length indicator (SLIV) for the first communication opportunity and a second SLIV for the second communication opportunity that is different from the first SLIV; a first frequency domain resource allocation (FDRA) for the first communication opportunity and a second FDRA for the second communication opportunity that is different from the first FDRA; a first time domain resource allocation (TDRA) for the first communication opportunity and a second TDRA for the second communication opportunity that is different from the first TDRA; a first modulation and coding scheme (MCS) for the first communication opportunity and a second MCS for the second communication opportunity that is different from the first MCS; a first transmission configuration indicator (TCI) for the first communication opportunity and a second TCI for the second communication opportunity that is different from the first TCI; or any combination thereof.

[0253] Figure 32is a conceptual diagram illustrating an example of a hardware implementation of a base station (BS) 3200 employing a processing system 3214. According to various aspects of the present disclosure, an element or any portion of an element or any combination of elements may be implemented using a processing system 3214 including one or more processors 3204. In some embodiments, the BS 3200 may correspond to Figure 18 Scheduling entity 1808 (e.g., gNB, transmission reception point, UE, etc.), Figure 19 Base stations 1910, 1912, 1914 or 1918 or Figure 29 One or more of BS1204.

[0254] Processing system 3214 can be used with Figure 30 The processing system 3014 shown is substantially the same, including a bus interface 3208, a bus 3202, a memory 3205, a processor 3204, and a computer-readable medium 3206. In addition, the BS 3200 may include an interface 3230 (e.g., a network interface) that provides means for communicating with at least one other device within the core network and with at least one radio access network.

[0255] BS 3200 may be configured to perform any one or more of the operations described herein (e.g., as described above in conjunction with Figures 18 to 29 Describe and combine as follows Figure 33 In some aspects of the present disclosure, the processor 3204, as utilized in the BS 3200, may include circuits configured for various functions.

[0256] In some aspects of the present disclosure, the processor 3204 may include a communication and processing circuit 3241. The communication and processing circuit 3241 may include one or more hardware components that provide a physical structure for performing various processes related to communication described herein (e.g., signal reception and / or signal transmission). The communication and processing circuit 3241 may also include one or more hardware components that provide a physical structure for performing various processes related to signal processing described herein (e.g., processing received signals and / or processing signals for transmission). The communication and processing circuit 3241 may also be configured to execute communication and processing software 3251 included on the computer-readable medium 3206 to implement one or more functions described herein.

[0257] In some embodiments where the communication involves receiving information, the communication and processing circuitry 3241 can obtain information from a component of the BS 3200 (e.g., from the transceiver 3210, which receives the information via radio frequency signaling or some other type of signaling suitable for the applicable communication medium), process (e.g., decode) the information, and output the processed information. For example, the communication and processing circuitry 3241 can output the information to another component of the processor 3204, the memory 3205, or the bus interface 3208. In some examples, the communication and processing circuitry 3241 can receive one or more of a signal, a message, other information, or any combination thereof. In some examples, the communication and processing circuitry 3241 can receive the information via one or more channels. In some examples, the communication and processing circuitry 3241 can include functionality for receiving components.

[0258] In some embodiments where communication involves sending (e.g., transmitting) information, the communication and processing circuitry 3241 can obtain information (e.g., from another component of the processor 3204, the memory 3205, or the bus interface 3208), process (e.g., encode) the information, and output the processed information. For example, the communication and processing circuitry 3241 can output information to the transceiver 3210 (e.g., the transceiver sends the information via radio frequency signaling or some other type of signaling suitable for an applicable communication medium). In some examples, the communication and processing circuitry 3241 can send one or more of a signal, a message, other information, or any combination thereof. In some examples, the communication and processing circuitry 3241 can send information via one or more channels. In some examples, the communication and processing circuitry 3241 can include functionality for sending components (e.g., sending components).

[0259] The processor 3204 may include an SPS configuration circuit 3242 configured to perform SPS configuration-related operations as discussed herein (e.g., generating an SPS configuration and issuing an RRC message indicating the SPS configuration). The SPS configuration circuit 3242 may include functionality of components for sending messages (e.g., SPS configuration messages and / or SPS activation / deactivation messages). The SPS configuration circuit 3242 may also be configured to execute SPS configuration software 3252 included on the computer-readable medium 3206 to implement one or more functions described herein.

[0260] The processor 3204 may include a scheduling circuit 3243 configured to perform scheduling-related operations as discussed herein (e.g., issuing DCI to activate, deactivate, or reactivate SPS). The scheduling circuit 3243 may include functionality of components for sending a transmission (e.g., for an SPS opportunity that includes multiple communication opportunities). The scheduling circuit 3243 may also be configured to execute scheduling software 3253 included on the computer-readable medium 3206 to implement one or more functions described herein.

[0261] Figure 33 is a flow chart illustrating an exemplary process 3300 for a wireless communication system according to some aspects of the present disclosure. As described below, some or all of the illustrated features may be omitted in certain implementations within the scope of the present disclosure, and some illustrated features may not be required for implementation of all embodiments. In some examples, process 3300 may be performed by Figure 32 The process 3300 may be performed by the base station 3200 shown. In some examples, the process 3300 may be performed by any suitable device or component for performing the functions or algorithms described below.

[0262] At block 3302, the BS may generate a message indicating the periodicity between SPS opportunities for the configured semi-persistent scheduling (SPS). Figure 32 The SPS configuration circuitry 1542 is shown and described as being operable to generate RRC messages (eg, for cells and BSPs) that schedule SPS.

[0263] At block 3304, the BS may send the message to the wireless communication device. Figure 32 The SPS configuration circuitry 3242 shown and described in cooperation with the communication and processing circuitry 1541 and the transceiver 3210 may broadcast an RRC message, send an RRC message to a wireless communication device, or communicate an RRC message in some other manner.

[0264] At block 3306, the BS may send a transmission to the wireless communication device for a first SPS opportunity in the SPS opportunities. The first SPS opportunity may include multiple communication opportunities, and at least two of the multiple communication opportunities may include downlink information. For example, in conjunction with Figure 32 The scheduling circuitry 3243 shown and described in cooperation with the communication and processing circuitry 3241 and the transceiver 3210 may transmit an SPS opportunity (according to an SPS period), wherein an SPS opportunity includes a plurality of communication opportunities.

[0265] In some examples, the downlink information may include first information in a first communication opportunity in the plurality of communication opportunities and second information in a second communication opportunity in the plurality of communication opportunities. The first communication opportunity may include a first communication sub-opportunity, and the second communication opportunity may include a second communication sub-opportunity,

[0266] In some examples, the process may also include performing a first hybrid automatic repeat request (HARQ) process on the first information and a second HARQ process on the second information. In some examples, the process may also include receiving a physical uplink control channel (PUSCH) message from the wireless communication device, the PUSCH message including a first acknowledgment of the first information and a second acknowledgment of the second information. In some examples, the process may also include, after receiving the PUSCH message, generating composite downlink control information (DCI) indicating a first resource for a first retransmission of the first information and a second resource for a second retransmission of the second information, and sending the DCI to the wireless communication device.

[0267] In some examples, the first information is for a first transmission block, and the second information is for a second transmission block. In some examples, the first communication opportunity is two time slots in length, and the second communication opportunity is one time slot in length. In some examples, the process may also include receiving a first acknowledgment of the first information and a second acknowledgment of the second information from the wireless communication device.

[0268] In some examples, sending a transmission for a first one of the SPS opportunities to the wireless communication device may include sending first information in the first communication opportunity on a first radio frequency (RF) band and sending second information in the second communication opportunity on a second RF band different from the first RF band. In some examples, sending a transmission for a first one of the SPS opportunities to the wireless communication device may include sending the first information in the first communication opportunity via a first (RF) beam and sending the second information in the second communication opportunity on a second RF beam different from the first RF beam.

[0269] In some examples, the first communication opportunity and the second communication opportunity may include multiple communication sub-opportunities, and sending a transmission for the first SPS opportunity in the SPS opportunity to the wireless communication device may include sending information in at least two communication sub-opportunities in the multiple communication sub-opportunities. In some examples, the process may also include performing a first hybrid automatic repeat request (HARQ) process on the first communication sub-opportunity in the multiple communication sub-opportunities and performing a second HARQ process on the second communication sub-opportunity in the multiple communication sub-opportunities. In some examples, sending a transmission for the first SPS opportunity in the SPS opportunity to the wireless communication device may include sending the first information in the first communication sub-opportunity on a first radio frequency (RF) band and sending the second information in the second communication sub-opportunity on a second RF band different from the first RF band. In some examples, sending a transmission for the first SPS opportunity in the SPS opportunity to the wireless communication device may include sending the first information in the first communication sub-opportunity via a first (RF) beam and sending the second information in the second communication sub-opportunity on a second RF beam different from the first RF beam.

[0270] In some examples, the process may further include sending downlink control information (DCI) to the wireless communication device. The DCI may indicate at least one of the following: a start and length indicator (SLIV) for the plurality of communication opportunities, a frequency domain resource allocation (FDRA) for the plurality of communication opportunities, a time domain resource allocation (TDRA) for the plurality of communication opportunities, a modulation and coding scheme (MCS) for the plurality of communication opportunities, a transmission configuration indicator (TCI) for the plurality of communication opportunities, or any combination thereof.

[0271] In some examples, the process may also include sending downlink control information (DCI) to the wireless communication device. The DCI may indicate at least one of the following: a first start and length indicator (SLIV) for the first communication opportunity and a second SLIV for the second communication opportunity that is different from the first SLIV; a first frequency domain resource allocation (FDRA) for the first communication opportunity and a second FDRA for the second communication opportunity that is different from the first FDRA; a first time domain resource allocation (TDRA) for the first communication opportunity and a second TDRA for the second communication opportunity that is different from the first TDRA; a first modulation and coding scheme (MCS) for the first communication opportunity and a second MCS for the second communication opportunity that is different from the first MCS; a first transmission configuration indicator (TCI) for the first communication opportunity and a second TCI for the second communication opportunity that is different from the first TCI; or any combination thereof.

[0272] Several aspects of wireless communication networks have been presented with reference to exemplary embodiments. As those skilled in the art will readily appreciate, various aspects described throughout this disclosure may be extended to other telecommunication systems, network architectures, and communication standards.

[0273] For example, various aspects may be implemented within other systems defined by 3GPP, such as Long Term Evolution (LTE), Evolved Packet System (EPS), Universal Mobile Telecommunications System (UMTS), and / or Global System for Mobile (GSM). Various aspects may also be extended to systems defined by 3rd Generation Partnership Project 2 (3GPP2), such as CDMA2000 and / or Evolution-Data Optimized (EV-DO). Other examples may be implemented within systems employing IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Ultra-Wideband (UWB), Bluetooth, and / or other suitable systems. The actual telecommunication standard, network architecture, and / or communication standard employed will depend on the specific application and the overall design constraints imposed on the system.

[0274] The following examples are merely illustrative and aspects thereof may be combined with aspects of other embodiments or teachings described herein without limitation.

[0275] Example 1 is a method for wireless communication at a UE, comprising: receiving a configuration for multiple SPS opportunities, each SPS opportunity comprising multiple opportunities for downlink transmission by a base station; and monitoring the downlink transmission during one or more opportunities of the SPS opportunities.

[0276] In Example 2, the method of Example 1 further includes: the multiple SPS opportunities are for a single SPS configuration.

[0277] In Example 3, the method of Example 1 or Example 2 further includes: the multiple opportunities of the SPS opportunities are associated with the same HARQ process.

[0278] In Example 4, the method of any one of Examples 1 to 3 further includes: each opportunity of the plurality of opportunities corresponding to a time slot starting from an offset of the SPS opportunity.

[0279] In Example 5, the method of any one of Examples 1 to 4 further includes: monitoring the downlink transmission includes performing blind decoding on the PDSCH at each opportunity of the SPS opportunity until the downlink transmission is successfully received.

[0280] In Example 6, the method of any one of Examples 1 to 5 further includes: each of the multiple opportunities of the SPS opportunity is mapped to a single PUCCH resource for feedback, and the method includes: sending the feedback for each of the multiple opportunities for the SPS opportunity in the single PUCCH resource.

[0281] In Example 7, the method of any one of Examples 1 to 6 further includes: the feedback comprising HARQ feedback, the HARQ feedback comprising at least one bit for each of the plurality of opportunities for the SPS opportunity.

[0282] In Example 8, the method of any one of Examples 1 to 7 further includes: receiving scheduling information for retransmission in a DCI, wherein the DCI indicates a HARQ process for the SPS opportunity as an index of the retransmission.

[0283] In Example 9, the method of any one of Examples 1 to 8 further includes performing HARQ combining of the retransmission with the timing of the SPS timing having the highest detection index.

[0284] In Example 10, the method of any one of Examples 1 to 9 further includes: the DCI scheduling the retransmission also includes time domain resource allocation for the retransmission, and the method further includes: determining an opportunity for an SPS timing for the HARQ combination with the retransmission based on the time domain resource allocation for the retransmission.

[0285] In Example 11, the method of any one of Examples 1 to 10 further includes sending HARQ feedback with shared bits for the plurality of opportunities for the SPS opportunity.

[0286] In Example 12, the method of any one of Examples 1 to 11 further includes entering a sleep state between successfully receiving the downlink transmission and sending the HARQ feedback in the SPS opportunity or after sending the HARQ feedback.

[0287] In Example 13, the method of any one of Examples 1 to 12 further includes receiving a schedule of separate PUCCH resources for each of a plurality of opportunities for the SPS opportunity.

[0288] In Example 14, the method of any one of Examples 1 to 13 further includes: the separate PUCCH resource being restricted to use for positive acknowledgements.

[0289] In Example 15, the method of any one of Examples 1 to 14 further includes: sending an ACK in a separate PUCCH resource if the downlink transmission is successfully received; and suppressing sending feedback if the downlink transmission is not successfully received in any of the multiple opportunities of the SPS opportunity.

[0290] In Example 16, the method of any one of Examples 1 to 15 further includes: the separate PUCCH resource being limited to positive ACKs for opportunities of the SPS opportunity; and sending a NACK multiplexed with the PUSCH and corresponding to the opportunity of the SPS opportunity.

[0291] In Example 17, the method of any one of Examples 1 to 16 further includes: the SPS opportunity includes s opportunities, s is an integer, and the method further includes: receiving scheduling of s-1 separate PUCCH resources for each opportunity of the SPS opportunity, wherein the separate PUCCH resources are limited to use for positive confirmation; and receiving scheduling of the last PUCCH resource for ACK or NACK after the SPS opportunity.

[0292] In Example 18, the method of any one of Examples 1 to 17 further includes: the last PUCCH resource comprising a different time, a different frequency, or a different format than the separate PUCCH resources.

[0293] In Example 19, the method of any one of Examples 1 to 18 further includes: sending a single ACK to the base station in a separate PUCCH resource or the last PUCCH resource if the downlink transmission is successfully received; and sending the NACK to the base station in the last PUCCH resource if the downlink transmission is not successfully received.

[0294] In Example 20, the method of any one of Examples 1 to 19 further includes: sending the ACK to the base station in a separate PUCCH resource and the last PUCCH resource if the downlink transmission is successfully received; and sending the NACK in the last PUCCH resource if the downlink transmission is not successfully received in the SPS opportunity.

[0295] In Example 21, the method of any one of Examples 1 to 20 further includes: receiving scheduling for a separate PUCCH resource, wherein the separate PUCCH resource is limited to ACK for each of the multiple opportunities for the SPS opportunity, and receiving scheduling for additional PUCCH resources for ACK or NACK after the last opportunity of the SPS opportunity.

[0296] In Example 22, the method of any one of Examples 1 to 21 further includes: sending the ACK to the base station in a separate PUCCH resource and the additional PUCCH resource if the downlink transmission is successfully received; and sending the NACK in the additional PUCCH resource if the downlink transmission is not successfully received in the SPS opportunity.

[0297] Example 23 is a device comprising one or more processors and one or more memories in electronic communication with the one or more processors, the one or more memories storing instructions that are executable by the one or more processors to cause the device to implement the method of any one of Examples 1 to 22.

[0298] Example 24 is a system or apparatus comprising means for implementing the method or apparatus of any one of Examples 1 to 22.

[0299] Example 25 is a non-transitory computer-readable medium storing instructions executable by one or more processors to cause the one or more processors to implement the method of any one of Examples 1 to 22.

[0300] Example 26 is a method for wireless communication at a base station, comprising: configuring a UE for multiple SRS opportunities, each SPS opportunity comprising multiple opportunities for downlink transmission by the base station; and sending the packet to the UE in the opportunity of the SPS opportunity based on the arrival time of the packet.

[0301] In Example 27, the method of Example 26 further includes: the plurality of SPS opportunities are for a single SPS configuration.

[0302] In Example 28, the method of Example 26 or Example 27 further includes: the multiple opportunities of the SPS opportunities are associated with the same HARQ process.

[0303] In Example 29, the method of any one of Examples 26 to 28 further includes: the base station sending the packet to the UE in a single opportunity of the multiple opportunities of the SPS opportunities.

[0304] In Example 30, the method of any one of Examples 26 to 29 further includes: each opportunity of the plurality of opportunities corresponding to a time slot starting from an offset of the SPS opportunity.

[0305] In Example 31, the method of any one of Examples 26 to 30 further includes: each of the multiple opportunities of the SPS opportunity is mapped to a single PUCCH resource for feedback.

[0306] In Example 32, the method of any one of Examples 26 to 31 further includes receiving HARQ feedback having at least one bit for each of the plurality of opportunities for the SPS opportunity.

[0307] In Example 33, the method of any one of Examples 26 to 32 further includes receiving a scheduled retransmission in a DCI, the DCI indicating a HARQ process for the SPS opportunity as an index for the retransmission.

[0308] In Example 34, the method of any one of Examples 26 to 33 further includes: the DCI scheduling the retransmission also includes time domain resource allocation for the retransmission, which indicates that the UE uses the opportunity of the SPS timing for HARQ combination with the retransmission.

[0309] In Example 35, the method of any one of Examples 26 to 34 further includes receiving HARQ feedback having shared bits for the plurality of opportunities for the SPS opportunity.

[0310] In Example 36, the method of any one of Examples 26 to 35 further includes scheduling a separate PUCCH resource for each of the plurality of opportunities for the SPS opportunity.

[0311] In Example 37, the method of any one of Examples 26 to 36 further includes: the separate PUCCH resource being restricted to use for positive acknowledgement.

[0312] In Example 38, the method of any one of Examples 26 to 37 further includes: receiving an ACK in a separate PUCCH resource if the downlink transmission is successfully received; and scheduling a retransmission of the packet if no positive acknowledgement is received in any of the separate PUCCH resources.

[0313] In Example 39, the method of any one of Examples 26 to 38 further includes: the SPS opportunity includes s opportunities, s is an integer, and the method further includes: scheduling s-1 separate PUCCH resources for each opportunity of the SPS opportunity, wherein the separate PUCCH resources are limited to use for positive confirmation; and scheduling the last PUCCH resource after the SPS opportunity for ACK or NACK.

[0314] Example 40 is a device comprising one or more processors and one or more memories in electronic communication with the one or more processors, the one or more memories storing instructions that are executable by the one or more processors to cause the device to implement the method of any one of Examples 26 to 39.

[0315] Example 41 is a system or apparatus comprising components for implementing the method or apparatus of any of Examples 26 to 39.

[0316] Example 42 is a non-transitory computer-readable medium storing instructions executable by one or more processors to cause the one or more processors to implement the method of any one of Examples 26 to 39.

[0317] Example 43 is a method for communicating at a wireless communication device, the method comprising: receiving a message from a base station, the message indicating the periodicity between SPS opportunities of a configured semi-persistent scheduling (SPS); receiving a transmission from the base station for a first SPS opportunity among the SPS opportunities, the first SPS opportunity comprising a plurality of communication opportunities; and decoding downlink information included in at least two of the plurality of communication opportunities.

[0318] In Example 44, the method of Example 43 includes the downlink information comprising: first information in a first communication opportunity of the plurality of communication opportunities; and second information in a second communication opportunity of the plurality of communication opportunities.

[0319] In Example 45, the method of any one of Examples 43 and 44 includes performing a first hybrid automatic repeat request (HARQ) process for the first information; and performing a second HARQ process for the second information in the second communication opportunity.

[0320] In Example 46, the method of any one of Examples 43 to 45 further includes: sending a physical uplink control channel (PUSCH) message to the base station, the PUSCH message including a first confirmation of the first information; and a second confirmation of the second information.

[0321] In Example 47, the method of any one of Examples 43 to 46 includes: receiving downlink control information (DCI) from the base station after sending the PUSCH message, the DCI indicating at least one of: a first resource for retransmission of the first information; a second resource for retransmission of the second information; or a combination thereof.

[0322] In Example 48, the method of any one of Examples 43 to 47 includes: the first information is for a first transport block, and the second information is for a second transport block.

[0323] In Example 49, the method of any one of Examples 43 to 48 includes: the first communication opportunity being two time slots in length; and the second communication opportunity being one time slot in length.

[0324] In Example 50, the method of any one of Examples 43 to 49 includes: generating a first confirmation of the first information; and generating a second confirmation of the second information.

[0325] In Example 51, the method of any one of Examples 43 to 50 includes: receiving the transmission for the first SPS opportunity in the SPS opportunity from the base station includes: receiving the first information in the first communication opportunity on a first radio frequency (RF) band; and receiving the second information in the second communication opportunity on a second RF band different from the first RF band.

[0326] In Example 52, the method of any one of Examples 43 to 51 includes: receiving the transmission for the first SPS opportunity in the SPS opportunity from the base station includes receiving the first information in the first communication opportunity via a first (RF) beam; and receiving the second information in the second communication opportunity on a second RF beam different from the first RF beam.

[0327] In Example 53, the method of any one of Examples 43 to 52 includes: the first communication opportunity and the second communication opportunity include multiple communication sub-opportunities, and decoding the downlink information included in at least two communication opportunities of the multiple communication opportunities includes decoding the information included in at least two communication sub-opportunities of the multiple communication sub-opportunities.

[0328] In Example 54, the method of any one of Examples 43 to 53 includes: the first communication opportunity and the second communication opportunity include multiple communication sub-opportunities, and the method also includes performing a first hybrid automatic repeat request (HARQ) process on a first communication sub-opportunity among the multiple communication sub-opportunities; and performing a second HARQ process on a second communication sub-opportunity among the multiple communication sub-opportunities.

[0329] In Example 55, the method of any one of Examples 43 to 54 includes: the first communication opportunity includes a first communication sub-opportunity, the second communication opportunity includes a second communication sub-opportunity, and receiving the transmission for the first SPS opportunity in the SPS opportunity from the base station includes: receiving the first information in the first communication sub-opportunity on a first radio frequency (RF) band; and receiving the second information in the second communication sub-opportunity on a second RF band different from the first RF band.

[0330] In Example 56, the method of any one of Examples 43 to 55 includes: the first communication opportunity includes a first communication sub-opportunity, the second communication opportunity includes a second communication sub-opportunity, and receiving the transmission for the first SPS opportunity in the SPS opportunity from the base station includes: receiving the first information in the first communication sub-opportunity via a first (RF) beam; and receiving the second information in the second communication sub-opportunity on a second RF beam different from the first RF beam.

[0331] In Example 57, the method of any one of Examples 43 to 56 includes: downlink control information (DCI) from the base station, the DCI indicating at least one of the following: a first start and length indicator (SLIV) for the first communication opportunity and a second SLIV for the second communication opportunity that is different from the first SLIV; a first frequency domain resource allocation (FDRA) for the first communication opportunity and a second FDRA for the second communication opportunity that is different from the first FDRA; a first time domain resource allocation (TDRA) for the first communication opportunity and a second TDRA for the second communication opportunity that is different from the first TDRA; a first modulation and coding scheme (MCS) for the first communication opportunity and a second MCS for the second communication opportunity that is different from the first MCS; a first transmission configuration indicator (TCI) for the first communication opportunity and a second TCI for the second communication opportunity that is different from the first TCI; or any combination thereof.

[0332] In Example 58, the method of any one of Examples 43 to 57 includes: it also includes receiving downlink control information (DCI) from the base station, the DCI indicating at least one of the following: a start and length indicator (SLIV) for the multiple communication opportunities, a frequency domain resource allocation (FDRA) for the multiple communication opportunities, a time domain resource allocation (TDRA) for the multiple communication opportunities, a modulation and coding scheme (MCS) for the multiple communication opportunities, a transmission configuration indicator (TCI) for the multiple communication opportunities, or any combination thereof.

[0333] Example 59 is a wireless communication device comprising a transceiver, a memory, and a processor communicatively coupled to the transceiver and the memory, wherein the processor and the memory are configured to cause the device to implement the method of any one of Examples 43 to 58.

[0334] Example 60 is a wireless communication device comprising: a component for receiving a message from a base station, the message indicating the periodicity between SPS opportunities of a configured semi-persistent scheduling (SPS), wherein the component for receiving is further configured to receive a transmission for a first SPS opportunity among the SPS opportunities, the first SPS opportunity comprising a plurality of communication opportunities; and a component for decoding downlink information included in at least two of the plurality of communication opportunities.

[0335] In Example 61, the means for receiving and / or the means for decoding are configured to perform any of the functions identified in any of Examples 43 to 58.

[0336] Example 62 is an article for use with a wireless communication device in a wireless communication network, the article comprising a computer-readable medium having instructions stored therein, the instructions executable by one or more processors of the wireless communication device to perform any of the methods identified in any of Examples 43 to 58.

[0337] Example 63 is a method for conducting wireless communications at a base station, the method comprising: generating a message indicating periodicity between configured semi-persistent scheduling (SPS) opportunities; sending the message to a wireless communication device; and sending a transmission for a first SPS opportunity among the SPS opportunities to the wireless communication device, the first SPS opportunity comprising a plurality of communication opportunities, wherein at least two of the plurality of communication opportunities comprise downlink information.

[0338] In Example 64, the method of Example 63 includes the downlink information comprising first information in a first communication opportunity of the plurality of communication opportunities and second information in a second communication opportunity of the plurality of communication opportunities.

[0339] In Example 65, the method of any one of Examples 63 and 64 includes performing a first hybrid automatic repeat request (HARQ) process for the first information, and performing a second HARQ process for the second information.

[0340] In Example 66, the method of any one of Examples 63 to 65 includes receiving a physical uplink control channel (PUSCH) message from the wireless communication device, the PUSCH message including a first acknowledgment of the first information and a second acknowledgment of the second information.

[0341] In Example 67, the method of any one of Examples 63 to 66 includes: after receiving the PUSCH message, generating composite downlink control information (DCI), the DCI indicating a first resource for a first retransmission of the first information and a second resource for a second retransmission of the second information; and sending the DCI to the wireless communication device.

[0342] In Example 68, the method of any one of Examples 63 to 67 includes: the first information is for a first transport block; and the second information is for a second transport block.

[0343] In Example 69, the method of any one of Examples 63 to 68 includes: the first communication opportunity being two time slots in length; and the second communication opportunity being one time slot in length.

[0344] In Example 70, the method of any one of Examples 63 to 69 includes further comprising receiving a first confirmation of the first information and a second confirmation of the second information from the wireless communication device.

[0345] In Example 71, the method of any one of Examples 63 to 70 includes: the transmission for the first SPS opportunity in the SPS opportunity includes: sending the first information in the first communication opportunity on a first radio frequency (RF) band; and sending the second information in the second communication opportunity on a second RF band different from the first RF band.

[0346] In Example 72, the method of any one of Examples 63 to 71 includes: sending the transmission for the first SPS opportunity in the SPS opportunity to the wireless communication device includes: sending the first information in the first communication opportunity via a first (RF) beam; and sending the second information in the second communication opportunity on a second RF beam different from the first RF beam.

[0347] In Example 73, the method of any one of Examples 63 to 72 includes: the first communication opportunity and the second communication opportunity include multiple communication sub-opportunities, and sending a transmission for the first SPS opportunity in the SPS opportunity to the wireless communication device includes sending information in at least two communication sub-opportunities in the multiple communication sub-opportunities.

[0348] In Example 74, the method of any one of Examples 63 to 73 includes: the first communication opportunity and the second communication opportunity include multiple communication sub-opportunities, and the method also includes performing a first hybrid automatic repeat request (HARQ) process on a first communication sub-opportunity among the multiple communication sub-opportunities; and performing a second HARQ process on a second communication sub-opportunity among the multiple communication sub-opportunities.

[0349] In Example 75, the method of any one of Examples 63 to 74 includes: the first communication opportunity includes a first communication sub-opportunity, the second communication opportunity includes a second communication sub-opportunity, and the transmission for the first SPS opportunity in the SPS opportunity sent to the wireless communication device includes: sending the first information in the first communication sub-opportunity on a first radio frequency (RF) band; and sending the second information in the second communication sub-opportunity on a second RF band different from the first RF band.

[0350] In Example 76, the method of any one of Examples 63 to 75 includes: the first communication opportunity includes a first communication sub-opportunity, the second communication opportunity includes a second communication sub-opportunity, and sending the transmission for the first SPS opportunity in the SPS opportunity to the wireless communication device includes: sending the first information in the first communication sub-opportunity via a first (RF) beam; and sending the second information in the second communication sub-opportunity on a second RF beam different from the first RF beam.

[0351] In Example 77, the method of any one of Examples 63 to 76 includes: sending downlink control information (DCI) to the wireless communication device, the DCI indicating at least one of the following: a first start and length indicator (SLIV) for the first communication opportunity and a second SLIV for the second communication opportunity that is different from the first SLIV; a first frequency domain resource allocation (FDRA) for the first communication opportunity and a second FDRA for the second communication opportunity that is different from the first FDRA; a first time domain resource allocation (TDRA) for the first communication opportunity and a second TDRA for the second communication opportunity that is different from the first TDRA; a first modulation and coding scheme (MCS) for the first communication opportunity and a second MCS for the second communication opportunity that is different from the first MCS; a first transmission configuration indicator (TCI) for the first communication opportunity and a second TCI for the second communication opportunity that is different from the first TCI; or any combination thereof.

[0352] In Example 78, the method of any one of Examples 63 to 77 includes sending downlink control information (DCI) to the wireless communication device, wherein the DCI indicates at least one of: a start and length indicator (SLIV) for the multiple communication opportunities, a frequency domain resource allocation (FDRA) for the multiple communication opportunities, a time domain resource allocation (TDRA) for the multiple communication opportunities, a modulation and coding scheme (MCS) for the multiple communication opportunities, a transmission configuration indicator (TCI) for the multiple communication opportunities, or any combination thereof.

[0353] Example 79 is a base station comprising a transceiver, a memory, and at least one processor communicatively coupled to the transceiver and the memory, wherein the processor and the memory are configured to perform any of the steps of Examples 64 to 78.

[0354] Example 80 is a base station comprising: a component for generating a message indicating periodicity between configured semi-persistent scheduling (SPS) SPS opportunities; and a component for sending the message to a wireless communication device, wherein the component for sending is further used to send a transmission for a first SPS opportunity among the SPS opportunities, the first SPS opportunity comprising a plurality of communication opportunities, wherein at least two of the plurality of communication opportunities comprise downlink information.

[0355] Example 81 is the base station of Example 74, comprising: the means for generating and / or the means for sending are configured to perform any one of the functions of Examples 64 to 78.

[0356] Example 82 is an article of manufacture for use with a base station in a wireless communication network, the article comprising a computer-readable medium storing instructions executable by one or more processors of the base station to perform any of the functions of Examples 64 to 78.

[0357] It should be understood that the specific order or hierarchy of blocks in the disclosed processes / flowcharts is illustrative of exemplary approaches. Based on design preferences, it should be understood that the specific order or hierarchy of blocks in the processes / flowcharts may be rearranged. Furthermore, some blocks may be combined or omitted. The accompanying method claims present elements of the various blocks in a sample order and are not meant to be limited to the specific order or hierarchy presented.

[0358] The above description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. Therefore, the claims are not intended to be limited to the various aspects shown herein, but to conform to the full scope consistent with the language claims, wherein quoting an element in the singular is not intended to mean "one and only one" (unless specifically stated), but "one or more". The word "exemplary" is used herein to mean "serving as an example, instance or illustration". Any aspect described as "exemplary" in this article is not necessarily interpreted as being preferred or advantageous over other aspects. Unless specifically stated otherwise, the term "some" refers to one or more. Combinations such as "at least one of A, B or C", "one or more of A, B or C", "at least one of A, B and C", "one or more of A, B and C" and "A, B, C or any combination thereof" include any combination of A, B and / or C, and may include multiple A, multiple B or multiple C. Specifically, combinations such as “at least one of A, B, or C,” “one or more of A, B, or C,” “at least one of A, B, and C,” “one or more of A, B, and C,” and “A, B, C, or any combination thereof” may be A only, B only, C only, A and B, A and C, B and C, or A and B and C, where any such combination may include one or more members of A, B, or C. All structural and functional equivalents to the elements of the various aspects described throughout this disclosure that are known or later become known to those of ordinary skill in the art are expressly incorporated herein by reference and are intended to be encompassed by the claims. In addition, nothing disclosed herein is intended to be dedicated to the public regardless of whether such disclosure is expressly recited in the claims. The words “module,” “mechanism,” “element,” “device,” etc. may not be a substitute for the word “component.” Thus, no claim element should be construed as part-plus-function unless the element is expressly recited using the phrase “component for….”

Claims

1. A device for wireless communication, the device comprising: one or more memories including instructions; as well as at least one processor configured to execute the instructions and cause the apparatus to: receiving a configuration for a plurality of semi-persistent scheduling (SPS) opportunities, wherein each SPS opportunity comprises a plurality of opportunities for downlink transmission by a network element; as well as monitoring said downlink transmissions during one or more SPS opportunities, wherein each of the plurality of opportunities of the SPS opportunities is mapped to a single physical uplink control channel (PUCCH) resource for feedback, and the at least one processor is further configured to: The feedback for each of the plurality of opportunities is sent for the SPS opportunity in the single PUCCH resource. The apparatus of claim 1 , wherein the plurality of SPS opportunities are for a single SPS configuration. 3 . The apparatus of claim 1 , wherein each opportunity of the plurality of opportunities corresponds to a time slot starting from an offset of the SPS opportunity.

4. The apparatus of claim 1 , wherein the at least one processor is further configured to monitor the downlink transmission at least in part by performing blind decoding on a physical downlink shared channel (PDSCH) at each of the SPS opportunities until the downlink transmission is successfully received. 5 . The apparatus of claim 1 , wherein the feedback comprises hybrid automatic repeat request (HARQ) feedback, the HARQ feedback comprising at least one bit for each of the plurality of opportunities for the SPS opportunity.

6. The apparatus of claim 5, wherein the at least one processor is further configured to: Scheduling information for retransmission is received in downlink control information (DCI), where the DCI indicates a HARQ process for the SPS opportunity as an index for the retransmission.

7. The apparatus of claim 6, wherein the at least one processor is further configured to: HARQ combining of the retransmission and the opportunity with the highest detection index of the SPS opportunity is performed.

8. An apparatus for wireless communication, comprising: one or more memories including instructions; and at least one processor configured to execute the instructions and cause the apparatus to: receiving a configuration for a plurality of semi-persistent scheduling (SPS) opportunities, wherein each SPS opportunity comprises a plurality of opportunities for downlink transmission by a network element; as well as The downlink transmission is monitored during one or more SPS opportunities, wherein the multiple SPS opportunities are associated with the same hybrid automatic repeat request (HARQ) process.

9. A network element comprising: at least one transceiver; one or more memories including instructions; as well as At least one processor is configured to execute the instructions and cause the network element to: allocating a plurality of semi-persistent scheduling (SPS) opportunities for a user equipment (UE), wherein each SPS opportunity comprises a plurality of opportunities for downlink transmission by the network element; and sending, via the at least one transceiver, the packet to the UE in an SPS opportunity based on an arrival time of the packet, Each of the multiple opportunities of the SPS opportunities is mapped to a single physical uplink control channel (PUCCH) resource for feedback.

10. The network element of claim 9, wherein the plurality of SPS opportunities are for a single SPS configuration.

11. The network element of claim 9, wherein the packet is sent in a single one of the plurality of opportunities of the SPS opportunities.

12. The network element of claim 9, wherein each opportunity of the plurality of opportunities corresponds to a time slot starting from an offset of the SPS opportunity.

13. A network element comprising: at least one transceiver; one or more memories including instructions; as well as At least one processor is configured to execute the instructions and cause the network element to: allocating a plurality of semi-persistent scheduling (SPS) opportunities for a user equipment (UE), wherein each SPS opportunity comprises a plurality of opportunities for downlink transmission by the network element; as well as The packets are sent to the UE via the at least one transceiver in opportunities of SPS opportunities based on arrival times of the packets, wherein the multiple opportunities of the SPS opportunities are associated with the same hybrid automatic repeat request (HARQ) process.

14. A wireless communication device, comprising: at least one transceiver; one or more memories including instructions; as well as at least one processor configured to execute the instructions and cause the wireless communication device to: receiving, via the at least one transceiver, a message from a network element, the message indicating a periodicity between SPS opportunities of a configured semi-persistent scheduling (SPS); receiving, from the network element via the at least one transceiver, a transmission for a first one of the SPS opportunities, the first SPS opportunity comprising a plurality of communication opportunities; and decoding downlink information included in at least two communication opportunities of the plurality of communication opportunities, The downlink information includes: first information in a first communication opportunity in the plurality of communication opportunities; and second information in a second communication opportunity in the plurality of communication opportunities, The at least one processor is further configured to cause the wireless communication device to: performing a first hybrid automatic repeat request HARQ process for the first information; and A second HARQ process is performed for the second information in the second communication opportunity.

15. The wireless communication device of claim 14 , wherein the at least one processor is further configured to cause the wireless communication device to send a Physical Uplink Control Channel (PUSCH) message to the network element via the at least one transceiver, the PUSCH message comprising: a first confirmation of the first information; as well as A second confirmation of the second information.

16. The wireless communication device of claim 15 , wherein the at least one processor is further configured to receive downlink control information (DCI) from the network element via the at least one transceiver after sending the PUSCH message, the DCI indicating at least one of: a first resource for retransmission of the first information; a second resource for retransmission of the second information; or A combination of them.

17. The wireless communication device of claim 14, wherein: The first information is for a first transport block; and The second information is for a second transport block.

18. The wireless communication device of claim 17, wherein: The first communication opportunity is two time slots in length; and The length of the second communication opportunity is one time slot.

19. The wireless communication device of claim 18, wherein the at least one processor is further configured to cause the wireless communication device to: generating a first confirmation of the first information; and A second confirmation of the second information is generated.

20. The wireless communication device of claim 14, wherein the at least one processor is further configured to cause the wireless communication device to: receiving, via the at least one transceiver, the first information in the first communication opportunity on a first radio frequency (RF) band; and The second information in the second communication opportunity is received via the at least one transceiver on a second RF band different from the first RF band.

21. A network element, comprising: at least one transceiver; one or more memories including instructions; as well as At least one processor is configured to execute the instructions and cause the network element to: generating a message indicating the periodicity between SPS opportunities of a configured semi-persistent scheduling SPS; sending the message to a wireless communication device via the at least one transceiver; and sending, via the at least one transceiver, to the wireless communication device, a transmission for a first one of the SPS opportunities, the first SPS opportunity comprising a plurality of communication opportunities, wherein at least two of the plurality of communication opportunities comprise downlink information, The downlink information includes: first information in a first communication opportunity in the plurality of communication opportunities; as well as second information in a second communication opportunity in the plurality of communication opportunities, wherein the at least one processor is further configured to cause the wireless communication device to: performing a first hybrid automatic repeat request HARQ process for the first information; and A second HARQ process is performed for the second information.

22. The network element of claim 21 , wherein the at least one processor is further configured to cause the wireless communication device to receive a Physical Uplink Control Channel (PUSCH) message from the wireless communication device via the at least one transceiver, the PUSCH message comprising: a first confirmation of the first information; as well as A second confirmation of the second information.

23. The network element of claim 22, wherein the at least one processor is further configured to cause the wireless communication device, after receiving the PUSCH message: generating composite downlink control information (DCI), the DCI indicating a first resource for a first retransmission of the first information and a second resource for a second retransmission of the second information; and The DCI is sent to the wireless communication device via the at least one transceiver.

24. The network element according to claim 21, wherein: The first information is for a first transport block; and The second information is for a second transport block.

25. A method for wireless communication at a user equipment (UE), comprising: receiving a configuration for a plurality of semi-persistent scheduling (SPS) opportunities, wherein each SPS opportunity comprises a plurality of opportunities for downlink transmission by a network element; and monitoring said downlink transmissions during one or more SPS opportunities, Each of the multiple opportunities of the SPS opportunity is mapped to a single physical uplink control channel (PUCCH) resource for feedback, and the method comprises: The feedback for each of the plurality of opportunities is sent for the SPS opportunity in the single PUCCH resource.

26. A method for wireless communication at a user equipment (UE), comprising: receiving a configuration for a plurality of semi-persistent scheduling (SPS) opportunities, wherein each SPS opportunity comprises a plurality of opportunities for downlink transmission by a network element; and The downlink transmission is monitored during one or more SPS opportunities, wherein the multiple SPS opportunities are associated with the same hybrid automatic repeat request (HARQ) process.

27. A method for wireless communication at a network element, comprising: allocating a plurality of semi-persistent scheduling (SPS) opportunities for a user equipment (UE), wherein each SPS opportunity comprises a plurality of opportunities for downlink transmission by the network element; and sending the packet to the UE in an SPS opportunity based on an arrival time of the packet, Each of the multiple opportunities of the SPS opportunities is mapped to a single physical uplink control channel (PUCCH) resource for feedback.

28. A method for wireless communication at a network element, comprising: allocating a plurality of semi-persistent scheduling (SPS) opportunities for a user equipment (UE), wherein each SPS opportunity comprises a plurality of opportunities for downlink transmission by the network element; and The packet is sent to the UE in SPS opportunities based on an arrival time of the packet, wherein the multiple SPS opportunities are associated with the same hybrid automatic repeat request (HARQ) process.

29. A method for wireless communication at a user equipment (UE), comprising: receiving a message from a network element, the message indicating a periodicity between SPS opportunities of a configured semi-persistent scheduling (SPS); receiving a transmission from the network element for a first one of the SPS opportunities, the first SPS opportunity comprising a plurality of communication opportunities; as well as decoding downlink information included in at least two of the plurality of communication opportunities, decoding downlink information included in at least two communication opportunities of the plurality of communication opportunities, The downlink information includes: first information in a first communication opportunity in the plurality of communication opportunities; and second information in a second communication opportunity in the plurality of communication opportunities, Wherein, the at least one processor is further configured to: performing a first hybrid automatic repeat request HARQ process for the first information; and A second HARQ process is performed for the second information in the second communication opportunity.

30. A method for wireless communication at a network element, comprising: generating a message indicating the periodicity between SPS opportunities of a configured semi-persistent scheduling SPS; sending the message to a wireless communication device; and sending a transmission for a first one of the SPS opportunities to the wireless communication device, the first SPS opportunity comprising a plurality of communication opportunities, wherein at least two of the plurality of communication opportunities comprise downlink information, The downlink information includes: first information in a first communication opportunity in the plurality of communication opportunities; as well as second information in a second communication opportunity in the plurality of communication opportunities, wherein the at least one processor is further configured to: performing a first hybrid automatic repeat request HARQ process for the first information; and A second HARQ process is performed for the second information.

31. An apparatus for wireless communication, the apparatus comprising means for performing the steps of any one of claims 25, 26, and 29.

32. A network element comprising modules for performing the steps of the method according to any one of claims 27, 28 and 30.

33. A computer-readable medium having program code recorded thereon, wherein the program code is executable by one or more processors of a user equipment (UE) to cause the one or more processors to perform the method according to any one of claims 25, 26 and 29.

34. A computer-readable medium having program code recorded thereon, wherein the program code is executable by one or more processors of a network element to cause the one or more processors to perform the method of any one of claims 27, 28, and 30.

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